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System for controlling access and distribution of digital property

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Publication number
US20010021926A1
US20010021926A1 US09178606 US17860698A US2001021926A1 US 20010021926 A1 US20010021926 A1 US 20010021926A1 US 09178606 US09178606 US 09178606 US 17860698 A US17860698 A US 17860698A US 2001021926 A1 US2001021926 A1 US 2001021926A1
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Prior art keywords
data
access
rules
mechanism
step
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US09178606
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US6314409B2 (en )
Inventor
Paul B. Schneck
Marshal D. Abrams
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Intellectual Ventures II LLC
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MRJ Inc
Veridian Information Solutions Inc
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    • H04L9/0816Key establishment, i.e. cryptographic processes or cryptographic protocols whereby a shared secret becomes available to two or more parties, for subsequent use
    • H04L9/0819Key transport or distribution, i.e. key establishment techniques where one party creates or otherwise obtains a secret value, and securely transfers it to the other(s)
    • H04L9/0822Key transport or distribution, i.e. key establishment techniques where one party creates or otherwise obtains a secret value, and securely transfers it to the other(s) using key encryption key
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    • G06F2221/2141Access rights, e.g. capability lists, access control lists, access tables, access matrices
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    • G06F2221/2143Clearing memory, e.g. to prevent the data from being stolen
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    • G06F2221/2145Inheriting rights or properties, e.g., propagation of permissions or restrictions within a hierarchy
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    • G06F2221/2149Restricted operating environment
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G11B20/00666Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a step of erasing or nullifying data, e.g. data being overwritten with a random string
    • G11B20/00673Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a step of erasing or nullifying data, e.g. data being overwritten with a random string wherein the erased or nullified data include a cryptographic key
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    • H04L2463/101Additional details relating to network architectures or network communication protocols for network security covered by H04L63/00 applying security measures for digital rights management

Abstract

A method and device are provided for controlling access to data. Portions of the data are protected and rules concerning access rights to the data are determined. Access to the protected portions of the data is prevented, other than in a non-useable form; and users are provided access to the data only in accordance with the rules as enforced by a mechanism protected by tamper detection. A method is also provided for distributing data for subsequent controlled use of those data. The method includes protecting portions of the data; preventing access to the protected portions of the data other than in a non-useable form; determining rules concerning access rights to the data; protecting the rules; and providing a package including: the protected portions of the data and the protected rules. A user is provided controlled access to the distributed data only in accordance with the rules as enforced by a mechanism protected by tamper protection. A device is provided for controlling access to data having protected data portions and rules concerning access rights to the data. The device includes means for storing the rules; and means for accessing the protected data portions only in accordance with the rules, whereby user access to the protected data portions is permitted only if the rules indicate that the user is allowed to access the portions of the data.

Description

    1. FIELD OF THE INVENTION
  • [0001]
    This invention relates to the control of distribution and access of digital property as well as to the payment therefor.
  • 2. BACKGROUND OF THE INVENTION
  • [0002]
    The development and deployment of digital information networks is accompanied by new concerns for the protection of rights to data and information. The U.S. Congress Office of Technology Assessment identified the following key developments relevant to the area of this invention: there has been an overall movement to distributed computing; boundaries between types of information are blurring; the number and variety of service providers has increased. Information Security and Privacy in Networked Environments, Congress, Office of Technology Assessment, OTA-TCT-606, Washington, DC: U.S. Government Printing Office, September 1994.
  • [0003]
    Computer networks allow more interactivity; and, most significantly, electronic information has opened new questions about copyright, ownership, and responsibility for information. Technology, business practice, and law are changing at different rates, law arguably being the slowest.
  • [0004]
    Intellectual property, or information, is different from real property. A major difference between intellectual property and real property is that intellectual property can be embodied in forms which can be copied from the owner while the owner still retains the original. For example, a broadcast or performance of a musical composition can be recorded (and copies made of the recording) while the composer retains the original composition; a photograph can be 5 reproduced while the owner retains the original negative.
  • [0005]
    In the past, when information was stored in analog form, the copying and redistribution of such information, while problematic, did not account for as much economic loss as is possible today. The storage of information in analog form uses a physical medium that is made to have some characteristic vary in proportion with the information to be stored. For instance, the groove on a vinyl record captures the frequency and intensity (volume) of a sound by the extent of its excursion. At each stage in the process of playing a record: the stylus tracing the groove, generation of a small voltage, amplification of the voltage, and reproduction of the sound, small errors are introduced. Today's high fidelity systems are very accurate, but they are not flawless.
  • [0006]
    Indeed, copying a vinyl record to a cassette tape results in a small, but noticeable, reduction in sound quality. If multiple generations of recording (e.g., cascaded recordings) were undertaken, the resulting product would be noticeably inferior to the original. Similarly, when multiple generations of photocopies of an image are made, the quality of the resulting image is typically poor, with many dark and light areas that were not present in the original image.
  • [0007]
    It is the inevitable gradual degradation of quality that has proven to be a practical disincentive to large scale copying of analog information. Notwithstanding this observation, where the potential profits are high, such copying is undertaken even though the resulting product's quality is significantly below that of the original. Videotape copies of movies represent a good example. Some fraction of the marketplace is willing to accept a lower quality product in exchange for a significantly lower price. The logistics associated with making large numbers of copies (an inherently serial process), including obtaining the raw materials (cassettes), the reproduction equipment, and the distribution channels also have served to limit illicit production. Finally, the quality of the product as well as the markings on the package distinguish it from the original and may also serve as a disincentive (for some) to purchase an illicit copy.
  • [0008]
    Just as the invention of the printing press changed the way in which society interacted with information on paper, the technical advances in digital computers and communications in the closing years of the twentieth century have a potential for high impact on legal, moral, and business practice. The printing press is often credited as an enabling mechanism for the Renaissance and the Reformation in Europe. The advances in digital information technology will similarly impact commerce and law. Digital technology enables changing the representation of information without changing the content. (Of course the content can be changed too.)
  • [0009]
    The storage of information in digital form depends on the ability to encode information in binary form to arbitrary precision and to record that binary form in a physical medium that can take on two distinct characteristics. Preserving the fidelity of information recorded in binary (using media with two distinct and easily-differentiated characteristics) is easily accomplished. For instance, a compact disc stores information (each binary digit or bit) as the presence or absence of a hole (depression or pit) that reflects or does not reflect light. Compared to the analog recording of phonograph records, the information stored in each hole is unambiguously a binary digit, the value of which is either zero or one. No other values are possible. A digital tape stores each bit as a magnetic spot that is oriented either north/south or south/north. Today's digital sound systems use sufficiently many bits to capture sound levels beyond the ability of the human ear to distinguish a difference and in so doing attain so-called “perfect” fidelity.
  • [0010]
    A digital file can be copied with no loss of fidelity (as the mechanism need only distinguish between two easily-differentiated states). With straightforward and well-known error-correction mechanisms, even inevitable flaws can be made so improbable as to occur fewer than once in ten billion bits.
  • [0011]
    As a result of the ability to copy a file with no loss of fidelity, it is now almost impossible to differentiate a digital copy from the digital original. In a network environment recording materials, reproduction equipment and distribution are not impediments to copying. Consequently, in the digital domain the threshold inhibiting the making of illicit copies is significantly lowered. Evidence that this is the case is presented by the Software Publishers Association and by the Business Software Alliance, each of which indicates that billions of dollars of software is pirated (in the sense of being illicitly copied) each year. Additionally, print publishers hesitate to expand into the network marketplace because they are unable to control (in the sense of receiving compensation in return for rights) secondary distribution of their products as well as incorporation of their products into derivative products. Digitally stored information may include binary data, computer software, text, graphics, audio, and video. The uses of this information include news, entertainment, education, and analysis. Information may be distributed in many ways, including networks, magnetic media, CD-ROM, semiconductor memory modules, and wireless broadcast.
  • [0012]
    Copying and distributing large volumes of digital information over long distances is becoming easier and less costly. Such changes in cost and convenience of necessity impact business decisions concerning producing, distributing, promoting, and marketing. The commercial relationship among information producers (such as authors, performers, and artists), distributors (such as publishers, promoters, and broadcasters), and consumers must change in response to the technology.
  • [0013]
    The law concerning intellectual property is in ferment. Major revisions in the laws regarding the protection of computer programs have been suggested. A Manifesto Concerning the Legal Protection of Computer Programs, Samuelson, P. R. et al., Columbia Law Review, vol. 94, no. 8, pp. 2308-2431, December 1994. The European Union is working on harmonizing protection of intellectual property rights with respect to technology and differences in civil and common law countries. Commission of the European Union, Jul. 19, 1995, Green Paper on Copyright and Neighboring Rights in the Information Society, catalogue number CB-CO-95-421-EN-C, ISSN 0254-1475, ISBM 92-77-92580-9, Office for Official Publications of the European Communities, L-2985 Luxembourg. In the United States, the issue of protection of intellectual property rights is being addressed in the context of the National Information Infrastructure. The uncertainty of legal protection over time and from country to country only serves to emphasize the importance of and need for technical protection of intellectual property rights in information and data.
  • [0014]
    The principal technology which has been used for protecting intellectual property is cryptography. However, devising practical retail systems for delivery of intellectual property from distributor to consumer, as distinct from confidential transmission in national security and business activities among trusted and cleared personnel, has required innovation.
  • [0015]
    Executable software-based cryptography can ensure that data are distributed only to authorized users. The information to be protected is encrypted and transmitted to the authorized user(s). Separately, a decryption key is provided only to authorized users. The key is subsequently used to enable decryption of the information so that it is available to the authorized user(s).
  • [0016]
    Other ways of controlling access to portions of data or software have included the use of external devices or tokens (dongles) needed in order to access the data or selected features of a program. Possession of the token is made evident to the computer system by physical attachment of the token to the computer. A token is generally attached to a printer, game, or network port where executable software can check on its presence prior to authorizing access. Diskettes have also been used as dongles; their presence in the diskette drive is checked by the executing software. Because they must be actively interrogated, dongles are generally used to limit access to program features and not to limit access to information.
  • [0017]
    Of those prior art systems which make some use of encryption, none protects the data after it has been decrypted. Thus, secondary distribution and multiple uses are possible.
  • [0018]
    Further, in all of the prior art, access is all or nothing, that is, once access is granted, it cannot be controlled in any other ways. This makes it difficult to control copying, secondary distribution, as well as to obtain payment for all uses.
  • [0019]
    Originator controlled data dissemination is desirable. Several policies for control of dissemination of paper documents are specified in Control of Dissemination of Intelligence Information, Directive No. 1/7, Director of Central Intelligence, May 4, 1981. This Originator-Controlled (ORCON) policy has motivated development of computerized access controls. ORCON requires the permission of the originator to distribute information beyond the original receivers designated by the originator. The Propagated Access Control (PAC) policy and the related Propagated Access Control List (PACL) were proposed as one way of implementing ORCON. “On the Need for a Third Form of Access Control,” Graubart, R., Proceedings of the 12th National Computer Security Conference, pp. 296-303, 1989. Whenever an authorized subject reads an object with an associated PACL, that PACL becomes associated with the subject. Any new object created by the subject inherits the PACL. PACLs are associated with both subjects and objects.
  • [0020]
    Owner-Retained Access Control (ORAC) (described in “Beyond the Pale of MAC and DAC: Defining New Forms of Access Control,” McCollum, C. J., et al. Proceedings of the Symposium on Research in Security and Privacy, IEEE Computer Society Press, 1990) is similar to PAC in propagating ACLs with non-discretionary enforcement. ORAC goes further, retaining the autonomy of all originators associated with a given object in making access decisions, while basing mediation of requests on the intersection of the access rights that have been granted. ORAC is motivated to implement several of the DCID 1/7 policies in addition to ORCON, namely NO_CONTRACTOR, NO_FOREIGN, and RELEASABLE_TO.
  • [0021]
    Originator-Controlled Access Control (ORGCON) (described in “Generalized Framework for Access Control: Towards Prototyping the ORGCON Policy,” Abrams, M. D., et al. Proceedings of the 14th National Computer Security Conference, October 1991) is a strong form of identity-based access control—it explicitly defines authority and delegation of authority, provides for accountability, and has an explicit inheritance policy. In ORGCON, the distribution list is indelibly attached to the object (i.e., the distribution list cannot be disassociated from the object, even in the limited cases where copying is permitted). ORGCON is a read, no-copy policy. Its formal model (taught in “A Rule-Set Approach to Formal Modeling of a Trusted Computer System,” LaPadula, L. J., Computing Systems Journal, Vol. 7, No. 1, pp. 113-167, Winter 1994) distinguishes among device types in order to deal with the policy that no storage copy of an object is permitted. Information may be copied only to the display and printer, but not to any other device types.
  • [0022]
    The Typed Access Matrix (TAM) Model (described in “The Typed Access Matrix Model,” Sandhu, R. S., Proceedings of the Symposium on Research in Security and Privacy, IEEE Computer Society, pp. 122-136, 1992; and “Implementation Considerations for the Typed Access Matrix Model in a Distributed Environment,” Sandhu, R. S., and G. S. Suri, 1992, Proceedings of the 15th National Computer Security Conference, pp. 221-235) incorporates strong typing into the access matrix model to provide a flexible model that can express a rich variety of security policies while addressing propagation of access rights and the safety problem. The safety problem is closely related to the fundamental flaw in Discretionary Access Control (DAC) that malicious code can modify the protection state. Types and rights are specified as part of the system definition; they are not predetermined in TAM.
  • [0023]
    The prior art, including cryptographic processes, tokens, dongles, so-called “uncopyable” media, various executable software protection schemes, and executable software for printing that places an identifier on all printed output in a fashion not apparent to a human, fails to limit either secondary distribution or distribution of derivative works.
  • [0024]
    This shortcoming is not a failure of mechanism, but rather it is an architectural design omission. The problem of copying by the authorized user is simply not addressed. In each case, once the data are available to an authorized user, they are basically unprotected and may be copied, modified, or transmitted at will. Schemes that include identifiers on printed material, although they may aid in identifying the source of copied material, do not prevent secondary distribution.
  • [0025]
    Executable software-based cryptography can ensure that data are distributed only to authorized users. However, once data are received they may be freely manipulated and redistributed.
  • [0026]
    The information to be protected is encrypted and transmitted to the authorized user(s). In some systems the encrypted information is made freely available. Separately, a decryption key is provided only to authorized users. The key is subsequently used to enable decryption of the information so that it is available to the authorized user(s). It is at this point that the information is subject to manipulation and redistribution without further limitation.
  • [0027]
    As mentioned above, a dongle or token can be used to authorize access to executable software. However, once access has been granted to information that information is subject to manipulation and redistribution without further limitation. Further, dongles have proven to be unpopular because of the need to keep track of them and ensure that they are separately secured.
  • [0028]
    Uncopyable media, generally used either to control distribution of information or to control usage of executable software, are unpopular because of the user's inability to create a backup copy. Further, most so-called uncopyable disks have fallen victim to general-purpose duplication programs, rendering their protection useless. Sometimes, as in early releases of Lotus 1-2-3, an uncopyable disk was provided with the executable software release and had to be inserted in a floppy-disk drive for the executable software to function (operating as a disk dongle). Users soon learned how to by-pass the executable software so that the disk need not be present. Even where partially effective, the uncopyable disk did not serve as a deterrent to capturing information and redistributing it.
  • [0029]
    The degree of protection of data is typically made by the data owners and/or distributors based on their security analysis. It is common to perform security analysis in terms of risks, threats, vulnerabilities, and countermeasures. An owner's estimate of the probability that a particular threat will materialize is crucial to selecting appropriate rules to protect property rights.
  • [0030]
    Threat can be characterized as the intensity of attack on the data, which can be described as low, medium, and high.
  • [0031]
    Low For a security function to be rated as “suitable for use in a low threat environment,” it shall be shown that the security function provides protection against unintended or casual breach of security by attackers possessing a low level of expertise, opportunities, resources and motivation. However, such a security function may be capable of being defeated by a knowledgeable attacker.
  • [0032]
    Medium For a security function to be rated as “suitable for use in a medium threat environment,” it shall be shown that the security function provides protection against attackers possessing a moderate level of expertise, opportunities, resources and motivation.
  • [0033]
    High For a security function to be rated as “suitable for use in a high threat environment,” it shall be shown that the security function provides protection against attackers possessing a high level of expertise, opportunity, resources and motivation. A successful attack is judged as being beyond normal practicality.
  • [0034]
    The following list covers some common anticipated threats to data and processing systems.
  • [0035]
    Threat: Capture of Output Signal
  • [0036]
    No matter what method is used to protect a data file, the data stored therein can be captured as a signal en route to an output device. Capture of an analog output results in some degradation of signal quality. But the market for bootleg copies of videos, for example, appears to be insensitive to such quality if the price is right. A captured digital signal suffers degradation of quality only as a result of bit errors (i.e., if the data capture was not completely accurate).
  • [0037]
    This threat is well known to the entertainment industry. Various approaches to protection have been incorporated in set-top boxes discussed in “Inside the Set-Top Box,” Ciciora, W. S., IEEE Spectrum, pp. 70-75, April 1995.
  • [0038]
    Threat: Digital Copying
  • [0039]
    Once data have been decrypted, the resulting cleartext must be protected from unauthorized copying. Creating an unauthorized local copy, or disseminating the data without authorization each results in an original-quality copy without compensation to the owner.
  • [0040]
    Threat: Deliberate Attack via Legacy (pre-existing) and Customized Hardware
  • [0041]
    High-intensity attack by attackers possessing a high level of expertise, opportunity, resources and motivation must be considered. Attackers in this category might include foreign governments and industrial espionage agents, teenage crackers, and resellers of pirated intellectual property. One manifestation of this threat is in uncontrolled hardware. The nominally protected information would be available in the memory and could be accessed via dual-ported memory or even by DMA (direct memory access) from a peripheral.
  • [0042]
    A strong indication of the usefulness and desirability of the present invention can be found in the legislation pending before the U.S. Congress to make illegal the by-passing or avoiding of copyright protection schemes. See S.1284, 104th Congress, 1st sess. (1995).
  • [0043]
    It is desirable to have a system of distributing data (intellectual property) that prevents copying, restricts re-distribution of the data and provides controlled access to the data.
  • SUMMARY OF THE INVENTION
  • [0044]
    This invention controls access to and use and distribution of data.
  • [0045]
    For example, when the data are in the form of textual and graphical information, this invention can control how much of the information is displayed and in what form; or, when the data represents a computer software program, this invention can control how much of the software's functionality is available. Classified data are similarly controlled.
  • [0046]
    In addition, this invention controls secondary distribution and creation of derivative works. Prior art systems rely on software for security. Without the tamper detection/reset mechanism of this invention, software can be modified or data can be intercepted rendering useless any attempts at control.
  • [0047]
    Degrees of protection utilized in the computer system hardware (for example, tamperproof and tamper-detect features) and the cryptographic tools will depend on the nature of the data to be protected as well as the user environment.
  • [0048]
    In one preferred embodiment, this invention is a method of controlling access to data by protecting portions of the data; determining rules concerning access rights to the data; preventing access to the protected portions of the data other than in a non-useable form; and permitting a user access to the data only in accordance with the rules as enforced by a tamper detecting mechanism.
  • [0049]
    In another preferred embodiment, this invention is a device for controlling access to digital data, the digital data comprising protected data portions and rules concerning access rights to the digital data. The device includes storage means for storing the rules; and means for accessing the protected data portions only in accordance with the rules, whereby user access to the protected data portions is permitted only if the rules indicate that the user is allowed to access the portions of the data.
  • [0050]
    In another aspect, this invention is a method of distributing digital data for subsequent controlled use of the data by a user. The method includes protecting portions of the digital data; preventing access to the protected portions of the data other than in a non-useable form; determining rules concerning access rights to the data; protecting the rules; and providing the protected portions of the digital data and the protected rules. The user is provided controlled access to the data only in accordance with the rules as enforced by a tamper detecting access mechanism.
  • [0051]
    In another aspect, this invention is a storage device, readable by a machine, tangibly embodying a package of digital data comprising protected portions of digital data; and rules concerning access rights to the digital data, whereby a user is provided controlled access to the digital data only in accordance with the rules as enforced by a tamper detecting access mechanism.
  • [0052]
    The data represent computer software, text, graphics, audio, and video, alone or in combinations.
  • [0053]
    The protecting is done by encrypting the portions of the data, and access is prevented to the encrypted portions of the data other than in encrypted form.
  • [0054]
    In some embodiments the rules are provided with the data, whereas in others the rules are provided separately. The rules can specify various access rights and controls, including rights of further distribution of the data.
  • [0055]
    In preferred embodiments, data are destroyed when tampering is detected.
  • [0056]
    The device containing the mechanism of the present invention can be a stand-alone device such as a facsimile machine, a television, a VCR, a laser printer, a telephone, a laser disk player, a computer system or the like.
  • [0057]
    As noted above, the rules, policies and protections of data are typically made by the data owners and/or distributors based on their security analysis of various threats. The various threats listed above are dealt with by countermeasures in the present invention.
  • [0058]
    Threat: Capture of Output Signal
  • [0059]
    Countermeasure: Encrypt or Scramble Output Signal
  • [0060]
    Protection of the output signal is accomplished with encryption of a digital signal (as is done in the present invention) and scrambling of an analog signal. This solution requires installing decryption or unscrambling capability in the output device, TV or monitor, along with appropriate tamper-detection capability. Encryption or scrambling might be effected using a public key associated with the output device (although, to prevent so-called “spoofing,” obtained from a certification authority and not from the output device). Alternatively, the output might be encrypted or scrambled using a private key only available to the designated output device (again ensured via some certification mechanism). The output signal is decrypted or unscrambled by the output device using its private key and is not available in plaintext form outside of the device's protected enclosure.
  • [0061]
    Countermeasure: Protect Output Signal by Packaging
  • [0062]
    The output signal is protected by making it unavailable outside the access mechanism. A sealed-unit computer with tamper detection provides the necessary protection. Examples of the acceptability of such packaging include lap-top computers and the original Macintosh computer, as well as integrated televisions, VCRs and video or audio laser disk players.
  • [0063]
    Threat: Digital Copying
  • [0064]
    Countermeasure: Secure Coprocessor
  • [0065]
    Selection of a secure coprocessor is indicated to implement protection against unauthorized use when an operating system (OS) is determined to be untrustworthy—that is, when the OS cannot provide adequate resistance to the anticipated threat. When the OS is untrustworthy, any measures implemented in the OS, or protected by it, can be circumvented through the OS or by-passing it.
  • [0066]
    Countermeasure: Detection of Unsealing
  • [0067]
    The protection provided by a coprocessor could be circumvented by tampering. The coprocessor is protected by tamper detection that causes the rules, cryptographic data, and decrypted protected data to be destroyed. Both passive and active means are used to effect such destruction. Semiconductor memory is volatile and does not retain data when power is removed. A long-life battery provides energy sufficient to allow rewriting (zeroizing) nonvolatile memory containing, for example, the private key. Without the private key the system will be unable to decrypt any protected data and it must be returned to an authorized service facility for installation of a new private key.
  • [0068]
    Threat: Deliberate Attack via Legacy and Customized Hardware
  • [0069]
    Countermeasure: Keep the Information on the Coprocessor Board
  • [0070]
    Access may be controlled if the information leaves the coprocessor board only for output purposes. Deciphered information is retained in memory on the coprocessor board, not in main memory. Program execution occurs in the coprocessor on the board (e.g, operating in the same manner as did so-called “accelerator” coprocessors that allowed a user to install an 80286 processor in an 80186 system, allowing the user to shift all functions to or from the faster coprocessor using a software command). Where information must leave the coprocessor board, e.g., to be sent to an output device, it may, depending on the associated rules, be encrypted. To receive and process encrypted data, the output device must have an access mechanism as well as public and private keys and tamper detect capability. Because some output peripheral devices do not have the capability of retransmission, the device may be a subset of the full access mechanism associated with a processor or computer system.
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • [0071]
    The above and other objects and advantages of the invention will be apparent upon consideration of the following detailed description, taken in conjunction with the accompanying drawings, in which the reference characters refer to like parts throughout and in which:
  • [0072]
    [0072]FIG. 1 is a schematic block diagram of an embodiment of a digital data access and distribution system according to the present invention;
  • [0073]
    [0073]FIGS. 2 and 3 show logical data structures used by the system depicted in FIG. 1;
  • [0074]
    [0074]FIG. 4 is a flow chart of the authoring mechanism of the embodiment of the present invention depicted in FIG. 1;
  • [0075]
    [0075]FIG. 5 is a schematic block diagram of another embodiment of a digital data access and distribution system according to the present invention;
  • [0076]
    [0076]FIG. 6 is a logical data structure used by the embodiment depicted in FIG. 5;
  • [0077]
    [0077]FIG. 7 is a flow chart of the authoring mechanism of the embodiment of the present invention depicted in FIG. 5;
  • [0078]
    [0078]FIGS. 8 and 9 show schematic block diagrams of embodiments of the access mechanism according to the present invention;
  • [0079]
    FIGS. 10(a)-13 are flow charts of the data access using the access mechanisms shown in FIGS. 8, 9 and 15;
  • [0080]
    [0080]FIG. 14 shows an embodiment of the invention which uses an external user status determination mechanism;
  • [0081]
    [0081]FIG. 15 is a schematic block diagram of an embodiment of a distribution system for derivative works according to the present invention;
  • [0082]
    [0082]FIG. 16 is a flow chart of data access using the access mechanism shown in FIG. 15;
  • [0083]
    FIGS. 17(a) and 17(b) show packetized data according to the logical data structures shown in FIGS. 2 and 6;
  • [0084]
    FIGS. 18(a)-23(b) show various examples of data and their packaging according to the present invention; and
  • [0085]
    [0085]FIG. 24 shows various implementation levels of a typical computer system employing an access mechanism according to the present invention.
  • DETAILED DESCRIPTION OF THE PRESENTLY PREFERRED EXEMPLARY EMBODIMENTS
  • [0086]
    A schematic block diagram of a presently preferred exemplary embodiment of a digital data access and distribution system 100 according to the present invention is depicted in FIG. 1. System 100 includes two main components: a data distributor 102 and a user 104. The data distributor 102 takes data 106 and produces packaged data 108 which are provided to the user 104 via communication channel 105, perhaps in return for some form of payment 110.
  • [0087]
    Corresponding to each of the distributor 102 and the user 104 are the system's authoring mechanism 112 and access mechanism 114, respectively. The authoring mechanism 112 of the distributor 102 takes the data 106 to be packaged and produces packaged data 108 which is provided to user 104 by a distribution mechanism 118. The packaged data 108 may include access rules 116 in encrypted form encoded therewith, or the access rules 116 may be provided to the user 104 separately (as shown in the embodiment of FIG. 5).
  • [0088]
    The access mechanism 114 of the user 104 takes the packaged data 108, either including an encrypted version of the access rules 116 or having the access rules provided separately, and enables the user to access the data in various controlled ways, depending on the access rules.
  • [0089]
    Data 106 provided to or generated by the distributor 102 can be any combination of binary data representing, for example,.computer software, text, graphics, audio, video and the like, alone or in combinations. As described below (with respect to the embodiment shown in FIGURE IS), in some embodiments data 106 can also include other packaged data produced by an authoring mechanism according to this invention.
  • [0090]
    The difference between the embodiments of the distributors 102 and 190, shown in FIGS. 1 and 15, respectively, is that the distributor 102 (FIG. 1) does not include an access mechanism 114. Accordingly, distributor 102 deals only with newly created data (that is, with non-derivative data). The embodiment shown in FIG. 15 (discussed below) includes the functionality of the embodiment shown in FIG. 1, and can also deal with input of protected data (previously packaged by a distributor). The embodiment of distributor 102 shown in FIG. 1 can be implemented purely in software (depending on the trust level of the employees of the publisher), whereas the embodiment of distributor 190 shown in FIG. 15 requires some hardware implementation.
  • [0091]
    Data 106 can also be provided to the distributor in non-digital form and converted to digital form by the distributor in a known and suitable fashion. The content of the data 106 can include, for example, news, entertainment, education, analysis and the like, alone or in combinations.
  • [0092]
    Note, as used herein, computer software refers to any software program used to control any computer processor. This includes, but is in no way limited to, processors in stand-alone computers; processors in video and audio devices such as televisions, video recorders and the like; processors in output devices such as printers, displays, facsimile machines and the like; and processors in appliances, automobiles, telephones and the like.
  • [0093]
    The data 106 are typically intellectual property subject to control. In some cases, distributor 102 may receive some form of payment 110 from the user 104 for accessing the data. This payment, or some part thereof, may then be provided directly to the actual owner (not shown) of the data 106. Further, the payment or part thereof may be made before, during or after use of the data.
  • [0094]
    As noted above, the packaged data 108 may include an encrypted version of the access rules 116, or these rules may be provided to the user separately. The logical data structure for the packaged data 108 is shown in FIG. 2 and includes an encrypted body part 120, an unencrypted body part 122, encrypted rules 124 (if provided with the packaged data), and encrypted ancillary information 126. Encrypted rules 124 are an encrypted version of access rules 116.
  • [0095]
    The actual format and layout of the data is dependent on the type of data, their intended use, the manner in which they are to be accessed and the granularity of control to be exercised on the data. An encyclopedia, for example, would likely be organized differently from a movie or a musical selection. Since the data can be any combination of binary data, different parts of the packaged data 108 may be structured differently, as appropriate. Accordingly, encrypted body part 120 is potentially made up of encrypted body elements, and similarly, unencrypted body part 122 is potentially made up of unencrypted body elements.
  • [0096]
    It is, however, envisaged that in presently preferred embodiments the data will be structured such that some data parts or elements have header information which enables the data to be traversed or navigated according to whatever rules are to be applied and in a manner appropriate for those data.
  • [0097]
    An example of the structure of rules 116 is shown in FIG. 3, wherein the rules include various forms of validity checking and identification information such as version number 127, authentication data 128, license number 130, intellectual property identifier 132, first and last valid generations of the product 134, 136. The rules 116 further include an encrypted data key 138 as well as the actual rules 140, 142, 144-146 to be applied when access is made to the data by a user. The actual rules include, but are not limited to, standard, extended and custom permissions 140, 142, 144-146, and co-requisite rules (permission lists) of source data 145.
  • [0098]
    The function of each field in the rules shown in FIG. 3 is given in TABLE I, below.
    TABLE I
    Field Function
    Version number 127 Defines internal
    configuration template
    Authentication (hash) 128 Validates integrity of
    this data file.
    License number of these Used by publisher to
    rules 130. identify owner.
    Intellectual property Identifies the
    identifier 132. intellectual property
    product.
    First valid generation of Defines extent of
    the product 134. validity of the license.
    Last valid generation of Defines extent of
    the product 136. validity of the license.
    Encrypted data key 138. Key to access the data.
    Standard permissions 140. List of basic access
    permissions for data.
    Extended permissions 142. List of extended access
    permissions for data.
    Custom permissions 144. Executable code modules.
    Co-requisite rules Indicates which source
    (permissions) for source data rules are needed.
    data 145.
    Token/biometrics 146 Indicates the physical
    tokens and/or biometric
    characteristics (if any)
    required for
    identification of each
    authorized user.
    System IDs/Public keys Other systems to which
    147 these rules may be
    redistributed.
  • [0099]
    A complete introduction and references to further reading concerning cryptography and cryptographic techniques and mechanisms are found in Abrams, M. D. and Podell, H. J., “Cryptography,” Security-An Integrated Collection of Essays, Abrams, M. D. et al, eds. IEEE Computer Society Press, 1995, which is hereby incorporated herein by reference.
  • [0100]
    The Authoring Mechanism
  • [0101]
    As shown in FIG. 1, the authoring mechanism 112 of the distributor 102 takes data 106 and produces packaged data 108 for distribution. The process of producing the packaged data which includes rules 116 is described with reference to FIGS. 1-4.
  • [0102]
    The authoring mechanism 112 incorporates existing source data 106 into a packaged format for dissemination. As noted above, data 106 can include but are not limited to combinations of computer software, text, graphics, audio, video and the like. The data 106 may be provided to the authoring mechanism 112 in various proprietary data formats used in vendor software packages as well as having lower level formats for graphics, tables, charts, spreadsheets, text, still and motion pictures, audio and the like.
  • [0103]
    Using the authoring mechanism 112, those elements of the data 106 that are to be encrypted are selected, as are the cryptographic algorithms and protocols to be employed, the payment procedures for the use of the data, and other decisions governing how the user 104 will be permitted to use the data. These decisions are used in constructing the permission lists to be included in the rules 116. Different classes of users can be defined, based, for example, on age, fee paid, qualifications and the like.
  • [0104]
    The presently preferred embodiment employs asymmetric encryption algorithms in the authoring and access mechanisms. The keys for these algorithms are protected within the system and are never exposed. The data-encrypting key, KD, is the same for all copies of the data. KD is selected by the distributor 102 and may be different for each product (i.e., for each packaged data 108). The symmetric encryption algorithm used for encrypting the data is associated with KD and may also be selected by the distributor. KD is encrypted using a rule-encrypting key KR. When the rules are distributed with the product (packaged data 108), KR is the same for all products and all embodiments of the system. When the rules are distributed separately from the product, KR can be unique for each version of the system. The rule-encrypting key KR is known only to (and protected within) each receiving computer of each user.
  • [0105]
    With reference to FIG. 4 which shows a flow chart of a version of the authoring mechanism of the 5 present invention in which the rules are distributed with the packaged data 108, the distributor 102 (acting as a representative of the owner of the data 106) selects a data-encrypting algorithm (DEA) (step S400) and data-encrypting key KD (step S402), and encrypts the data-encrypting key KD using KR (step S404). The encrypted data-encrypting key KD is then stored in the encrypted ancillary information 126 of the packaged data 108 (in step S406).
  • [0106]
    The algorithm selection (in step S400) is based on an assessment of risk, the degree of protection desired as well as other factors such as speed, reliability, exportability and the like. As used herein, risk refers to the expected loss due to, or impact of, anticipated threats in light of system vulnerabilities and strength or determination of relevant threat agents. Alternatively, risk can refer to the probability that a particular threat will exploit a particular vulnerability of the system. An analysis of risk, threats and vulnerability is provided below. Examples of possible data-encryption algorithms include, but are not limited to, DES, RSA, PGP and SKIPJACK. The system may use a preferred encryption algorithm and may also provide a mechanism for using algorithms provided with the data 106 by the owner of the data.
  • [0107]
    The data-encrypting key KD may be generated in a typical manner, suitable for the selected data-encrypting algorithm. For data having lower value to its owner, or having lower risk of loss, all distributions may rely on a single data-encrypting key (or perhaps a small number of data-encrypting keys). Another encryption method, uses a unique data-encrypting key for each item of data to be distributed.
  • [0108]
    Having selected a data-encrypting algorithm and key, KD, (S400-S402) and having encrypted and stored the key (S404-S406), the distributor 102 proceeds to process the various elements of the data 106. The data are processed at a granularity dependent on the type of restrictions needed on their use and on the form of the data themselves, that is, the form in which the data have been provided. The distributor obtains (step S407) and examines each part or element of the data (at the desired granularity) and determines whether or not the element being processed (the current element being examined) is in the body of the data (step S408) (as opposed to being rules or ancillary information). If the current element being examined is determined to be in the body of the data, the distributor then decides whether or not the current data element is to be protected (step S410), that is, whether or not access to that element of the data is to be controlled and the data element is to be encrypted.
  • [0109]
    If the current data element is not to be protected, it is stored (step S412) in the unencrypted body part 122 of the packaged data 108. Otherwise, if the current data element is to be protected, it is encrypted using the data-encrypting key KD (step S414) and then the encrypted current data element is stored in the encrypted body part 120 of the packaged data 108 (step S416), after which the next element is processed (starting at step S407).
  • [0110]
    For example, if the data 106 are a textual article, the abstract of the article might not be protected (encrypted) while the rest of the article would be.
  • [0111]
    If the current data element is determined not to be in the body of the data (step S408), the distributor then determines if the current data element is access rules provided by the data owner (step S418). If so, the rules are protected by encrypting them using the rule-encrypting key KR (step S420) and the encrypted rules are then stored in the encrypted rules part 124 of the packaged data 108 (step S422).
  • [0112]
    If the current data element (being processed) is not access rules, the distributor determines whether or not it is ancillary information (step S424). This information includes such things as the identification of the publisher and the like. If the current data element is determined to be ancillary information, the ancillary information is protected by encrypting it using the data-encrypting key KD (step S426) and then the encrypted ancillary information is stored in the encrypted ancillary information part 126 of the packaged data 108 (step S428).
  • [0113]
    If the data are rules or ancillary information to be encrypted, then, after appropriate processing, the next data element is processed (step S407).
  • [0114]
    If the current data element is not a body part, access rules or ancillary information, some form of error is assumed to have occurred and is processed (step S430). After the error has been processed, the mechanism can continue processing the next data element (step S407) or terminate, depending on the implementation.
  • [0115]
    The operation of the system 101 shown in FIG. 5 differs from system 100 of FIG. 1 in that the rules 116 are distributed to users 104 separately from the packaged data 108. This is achieved with an authoring mechanism 148 which takes as input data 106 and rules 116 and produces, separately, packaged data 150 and packaged rules 152. The packaged data 150 without the rules has the form shown in FIG. 6, which is essentially the same as the structure shown in FIG. 2, but without the encrypted rules 124.
  • [0116]
    Note that an hybrid system, wherein some rules are packaged with the data and other rules are packaged separately is foreseen, using a combination of the mechanisms shown in FIGS. 1 and 5. In such a system, an operator selects which mode of operation to employ.
  • [0117]
    [0117]FIG. 7 shows a flow chart of a version of the authoring mechanism 148 of the present invention in which the rules 116 are distributed by distributor 102 separately from the packaged data 10. Rules 116 and data 106 can be presented to the authoring mechanism 148 in any order, or in an interleaved fashion. In fact, the rules 116 need not all be provided together. The distributor 102 first selects a data-encrypting algorithm and a data encrypting key, KD (step S700). Then the authoring mechanism 148 processes the data element-by-element (starting at step S702). As in the case of the mechanism shown in FIG. 4, a data element is assumed to be one of either a body part, ancillary information or access rules.
  • [0118]
    First it is determined whether or not the current data element is a body part (step S716). If it is determined (in step S716) that the current data element is a body element, then it must be determined (in step S718) whether or not the data are to be protected. As in the case when the rules are distributed with the packaged data 108, the decision as to whether or not to protect a specific data element depends on the owner of the data and the distribution policies as implemented in the rules.
  • [0119]
    If the data are to be protected (step S718), the data in the current data element are encrypted using data-encrypting key KD (step S720) and then the encrypted data are stored in the packaged data 150 in the encrypted body part section 120 (step S722). On the other hand, if the data in the current data element are not to be protected, the data are stored in the unencrypted body part section 122 of the packaged data 150 (in step S724). In either case, after the data element is stored (steps S722 or S724), the next data element is processed (starting at step S702).
  • [0120]
    If the current data element is determined not to be a body element (step S716), then the mechanism checks to determine whether or not the current data element is ancillary information (step S726). If the current data element is determined to be ancillary information, it is protected by encrypting it using data-encrypting key KD (step S728) and then the encrypted current data element is stored in the packaged data 150 in the encrypted ancillary information section 126 (in step S730). Then the next data element is processed, starting at step S702.
  • [0121]
    If the current data element is neither a body element (step S716) nor ancillary information (step S726), then the it is determined whether or not the current data element is access rules (step S732). If so, the rules are to be distributed separately from the packaged data 150, and are processed accordingly as follows:
  • [0122]
    If this is the first time the access mechanism is processing rules for this data set then a rule-encrypting key KR must be determined. Accordingly, it is determined whether these are the first rules being processed for this data set (step S734). If so, obtain and validate the serial number, SN, of the system (steps S736 and S738). Then calculate the rule-encrypting key KR as a function of the validated serial number (KR=f(SN), for some appropriate function f (step S740). Function f may, for example, be an inquiry to a certification database or certification authority to obtain the public key so as to ensure that the serial number is authentic. Having determined the rule-encrypting key (step S740), encrypt the data key KD with the calculated rule-encrypting key KR (step 8742) and store the keys (step S744). Next, encrypt the rules using the rule-encrypting key KR (step S746). The encrypted rules and the encrypted data key KD are stored as packaged rules 152 for subsequent distribution. The rule-encrypting key KR may be stored or recalculated from the serial number whenever needed.
  • [0123]
    If it is determined (in step S734) that the this is not the first rules being processed for this data set, then the rule-encrypting key KR has already been calculated (step S740) and stored (step S744). In that case, the rules in the current data element are encrypted using the rule-encrypting key KR (step S742).
  • [0124]
    Once the rules in the current data element are processed, processing continues with the next data element (step S702).
  • [0125]
    If the authoring mechanism 148 determines that the current data element is not a body part (step S716), ancillary information (step S726) or rules (step S732), then some form of error has occurred and is processed (step S748). After an error has occurred, the mechanism 148 can either cease processing (step S750) or, in some embodiments, continue processing further data elements (step S702).
  • [0126]
    The data 106 provided to the distributor 102 and the packaged data 108 (or 150 and packaged rules 152, if provided separately) provided to the user 104, may be provided and distributed in various ways, including but not limited to, via digital communications networks (for example, the Internet or the projected National Information Infrastructure (NII)), magnetic media (for example, tape or disk), CD-ROM, semiconductor memory modules (for example, flash memory, PCMCIA RAM cards), and wireless (for example, broadcast). The packaged data 108 may be provided to a user as a single packaged entity or as a continuous stream of data. For example, a user may obtain a CD-ROM having a movie stored as packaged data thereon or the user may obtain the movie as a continuous stream of broadcast data for one-time viewing.
  • [0127]
    Information (such as the packaged data 108 from the distributor 102 to the user 104) can be transmitted openly, that is, using mechanisms and media that are subject to access and copying. In other words, communication channel 105 may be insecure.
  • [0128]
    The Access Mechanism
  • [0129]
    The access mechanism 114 allows a user 104 to access the data in packaged data 108 (or 150) according to the rules provided with (or separately from, as packaged rules 152) the packaged data and prevents the user or anyone else from accessing the data other than as allowed by the rules. However, having granted a user controlled access to data (according to the rules), it is necessary to prevent the user or others from gaining unauthorized access to the data. It is further necessary to prevent the data from being further distributed without authorization.
  • [0130]
    The access mechanism 114 used by the user 104 to access data is described with reference to FIG. 8 and includes a processing unit 154, read-only memory (ROM) 156, volatile memory (RAM) 158, I/O controller 165 and some form of energy source 166 such as, for example, a battery. Access mechanism 114 may also include electrically-alterable non-volatile memory 160, a hard disk 162, a display 164, and special purpose components such as encryption hardware 168.
  • [0131]
    The access mechanism 114 is also connected via insecure channels 174 and 176 and I/O controller 165 to various controlled display or output devices such as controlled printer 178 and controlled display monitor 180. (Interaction with these controlled devices is described in detail below.) Various other devices or mechanisms can be connected to I/O controller 165, for example, display 155, printer 157, network connection device 159, floppy disk 161 and modem 163. These devices will only receive plaintext from the I/O controller 165, and then only such as is allowed by the rules. The network connection device 159 can receive either plaintext or encrypted text for further distribution.
  • [0132]
    All components of the access mechanism 114 are packaged in such a way as to exclude any unknown access by a user and to discover any such attempt at user access to the components or their contents. That is, the access mechanism 114 is packaged in a tamper-detectable manner, and, once tampering is detected, the access mechanism is disabled. The line 167 depicted in FIG. 8 defines a so-called security boundary for the components of the access mechanism 114. Any components required for tamper detection (tamper detect mechanism 169) are also included as part of the access mechanism 114. Tamper detect mechanism 169 is connected in some appropriate manner to processing unit 154, energy source 166, and non-volatile memory 160.
  • [0133]
    This invention employs a combination of physical self-protection measures coupled with means for detecting that the self-protection has been circumvented or that an attempt to circumvent the self-protection measures is being or has been made. When such intrusion is detected, passive or active mechanisms can be employed to destroy data. For example, the following can occur (not necessarily in the order stated, and usually in parallel): the access mechanism 114 is made inoperative, all cryptographic keys within the mechanism, the private key and any other keys and data are destroyed (zeroized), and power may be applied to clear non-volatile memory 160 and then is removed, resulting in loss of all data stored in volatile memory 158 so as to deny access to decryption keys as well as to any cleartext in those memories. As noted above, several operations can be accommodated or performed simultaneously when tampering is detected. This can be done by hardware circuits. Based on risk assessment and the availability of particular technology, other implementations may be selected.
  • [0134]
    Tamper detection allows the access mechanism 114 to ensure that all internal data (both the system's data and any user data) are destroyed before any tamperer can obtain them.
  • [0135]
    One way to deny access to the data within access mechanism 114 is to package all of the components within a physical case which defines the area which is excluded from user access. As an example, a typical portable lap-top computer meets the requirement of having all components within the same physical package or case. Detection that the case has been opened is straightforward and well known.
  • [0136]
    As an alternative embodiment of the access mechanism 114, the components of the access mechanism 114 can be used as a co-processor of another processor or computer. In this case, as shown in FIG. 9, the access mechanism 114 communicates with the other computer 170 via a communications channel 172. The co-processor can be implemented as a circuit board and is designed to be plugged into the bus 172 on the main board (that is, the mother board or planar board) of the other computer 170. In that case, the computer 170 will operate normally unless it needs to access controlled data, at which time it will pass control to the access mechanism 114.
  • [0137]
    The degrees of protection used in the access mechanism (for example, tamper-detect features) and the cryptographic tools employed will depend on the nature of the data to be protected as well as the user environment.
  • [0138]
    Several techniques for physically secure coprocessor packaging are described by Yee (Yee, B., Using Secure Coprocessors, Carnegie Mellon University, School of Computer Science, CMU-CS-94-149, 1994 (also available Defense Technical Information Center as AD-A281 255)). In Yee, physical protection is described as a tamper-detecting enclosure. The only authorized way through the enclosure is through a coprocessor-controlled interface. Attempts to violate physical protection in order to gain access to the components of the coprocessor module will be detected and appropriate action taken. For example, detection of attack results in erasure of non-volatile memory before attackers can penetrate far enough to disable the sensors or read memory contents.
  • [0139]
    Any known form of tamper protection and detection can be used, as long as it functions to destroy the data as required.
  • [0140]
    Any data which are to be sent out of the security boundary 167 are under the control of the access mechanism 114. All I/O requests and interrupts are handled by the access mechanism 114.
  • [0141]
    All communication between the components of the access mechanism 114 and the enclosed hard disk 162 is encrypted. Therefore, if the hard disk is removed from the mechanism, any data stored thereon will be inaccessible without the appropriate keys. The encryption of the data stored on the hard disk can use cryptographic keys generated within the access mechanism and which are never known outside of the mechanism. In this way, when tampering is detected, the cryptographic keys will be lost.
  • [0142]
    In general, within the system, the data are encrypted on any non-volatile storage devices so that they remain unavailable in the case of tampering. Unencrypted data are only present within the access mechanism 114 inside the security boundary 167 in components where the data can be destroyed when tampering with the access mechanism 114 is detected.
  • [0143]
    With reference to FIGS. 8 and 9, the access mechanism 114 is also connected via insecure channels 174 and 176 and bus 177 to various controlled or uncontrolled display or output devices such as described above. This allows the system to communicate with uncontrolled devices (so-called standard devices) as well as networks, within the context of the rules/permission list. (Interaction with these controlled devices is described in detail below.) All communications on the insecure channels 174 and 176 and on bus 177 is encrypted by the access mechanism 114 (and by the authoring mechanism 112), and the controlled output devices 178 and 180 must have suitable processing capabilities within them (including an access mechanism 114) to decrypt and process data which they receive. The display or output devices used will depend on the application and the type of data, and include, but are not limited to, printers, video display monitors, audio output devices, and the like.
  • [0144]
    The embodiment shown in FIG. 9 can also include other standard devices (connected to bus 177) such as, for example, standard printer 181, floppy disk 185, modem 187 and the like.
  • [0145]
    The Accessing Operation
  • [0146]
    When a user 104 obtains packaged data 108 (or 150) from a distributor 102, the user can then access the data according to the rules provided therewith or provided separately. Data access is supported by the access mechanism 114 and is described with reference to FIGS. 8, 9 and 10(a), where FIG. 10(a) is a flow chart of the data access using the access mechanisms shown in FIGS. 8 and 9.
  • [0147]
    Note initially that, depending on the type of data to be accessed and viewed, as well as the rules, the viewing process may or may not be interactive. For example, if a user is accessing a textual document, the user may choose to access only selected portions of that document, the choice being made by viewing an index of the document. On the other hand, if a user is accessing a movie, the viewing may be continuous (if the rules do not allow a user to re-watch portions of the movie without additional payment). The access and viewing process is described here for an interactive case, since non-interactive access can be considered access with a single (“start-viewing”) interaction.
  • [0148]
    Note further that initiation of the access mechanism activates monitoring for interrupts and polling by the access mechanism 114. A user may also implicitly invoke the access mechanism by accessing an object (data) protected by the system. This invocation also activates monitoring for interrupts and polling.
  • [0149]
    The following discussion assumes, without loss of generality, that the data are being accessed by an application via an insecure operating system (OS) which invokes the access mechanism 114. The intent is to show the manner in which controlled access of the data takes place. In some foreseen environments, the operating system will be little more than a simple run-time system or there will be only one program running at all times. For example, in a video cassette recorder and playback machine (VCR), a single control program may be running at all times to control the VCR's operations. In this case, this control program is considered the application, and all access to controlled data is initiated by the control program which invokes the access mechanism 114.
  • [0150]
    To initiate an input access to a data element, a user must request the operating system to read such data into memory from an I/O device. Initiating I/O gives control to the access mechanism 114.
  • [0151]
    For input access to an input data element, the access mechanism 114 first determines whether the dataset containing the data element is already open (step S1000). If the dataset is not already open, it is opened (step S1001). Once opened, it is determined whether or not the dataset is protected (step S1002). Note that the data being accessed may or may not be part of packaged data. In some embodiments the access mechanism 114 can maintain a record of which open datasets are protected.
  • [0152]
    If it is determined that the dataset is not protected (step S1002), then control returns to the invoking process (step S1006). On the other hand, if the dataset is protected (step S1002) then it is determined whether or not the rules for this dataset are useable (present, available and valid) (step S1004). (The process of determining whether the rules are useable, i.e., step S1004 is described below with reference to FIG. 11.)
  • [0153]
    If the rules are determined to be useable (step S1004) then it is determined whether the data element being accessed is different from the most recently accessed data element (step S1008). If so, the data element is opened (step S1010) (otherwise the data element is already opened and available).
  • [0154]
    Next it is determined whether or not the data element is protected (step S1012). If the data element is not protected then control returns to the invoking process (step S1006). Otherwise, it is determined whether or not access is permitted (according to the rules) (step S1014). If no access to the data element is permitted then an access denial operation is performed (step S1016). For example, depending on the rules, the access mechanism 114 could either return to the invoking process (e.g., the operating system) or abort or perform some other operation. Following the access denial operation (step S1016), control returns to the invoking process (step S1006).
  • [0155]
    If access to the data element is permitted (step S1014), then the data element is made available, consistent with the rules, (step S1018) and control returns to the invoking process (step S1006).
  • [0156]
    If, in step S1004, it is determined that the rules are not useable, then an access denial operation is performed (step S1016), following which control returns to the invoking process (step S1006).
  • [0157]
    In some embodiments and/or uses of the system, the system obtains and sets up for enforcement all of the rules in the encrypted rules 124 prior to any data access or selection. In other embodiments and/or uses, rules are set up or interrogated for enforcement as needed. Depending on the type of the data and the intended application, a minimal set of global rules (governing any or all access to the data) is typically set up prior to any data access. Accordingly, the enforcement of some of the rules is set up when the package is obtained, prior-to any user access.
  • [0158]
    In some embodiments some of the required rules may not actually be provided, but are indicated by reference. In those cases, the referenced rules must be obtained when needed before data processing can continue.
  • [0159]
    Once the appropriate rules, if any, are set up (stored within the access mechanism 114), and the access mechanism is ready to enforce them, then, according to the rules, the user can access an element of the data.
  • [0160]
    The operating system is notified of the termination (normal or otherwise) of each program so that it may close any files opened by the program. Because it is possible that multiple programs may be executing at the same time, the system will remain in a protected state (if any protected data has been accessed) until all active programs conclude their execution. At that time all protected data in addressable memory are destroyed, and all rules/permission lists of files that have been created are updated, all files are closed and system status flags are reset.
  • [0161]
    Whenever a user wishes to access protected data, the access mechanism 114 may determine that the rules are not yet available for determination of whether or not to allow that access. Three possibilities exist regarding the presence of the rules.
  • [0162]
    1. The rules are packaged with the data.
  • [0163]
    2. The rules are not packaged with the data but are already present in the access mechanism 114 (i.e., in memory). This situation occurs if, for example, the user loaded a disk containing the rules and then the access mechanism 114, upon receiving the interrupt announcing the disk's presence, read the first record, recognized it as rules and decrypted them, storing them for later use. (Reading a disk's contents in advance of any actual use is presently done, for example, by some virus checking programs.) If the implementor chose not to respond to interrupts when a device is loaded, then, when rules are required, the access mechanism 114 checks all “ready” devices and inputs those rules that are present. This covers the case where the rules are present on the hard disk.
  • [0164]
    3. The rules are not present. That is, the rules are not packaged with the data and do not reside on any device attached to the system. In this case, the access mechanism 114 notifies the user that the rules are required. The user responds by either:
  • [0165]
    (a) indicating that the rules are not available (in which case the access mechanism 114 denies permission to the program); or
  • [0166]
    (b) loading the rules (in which case the access mechanism 114 confirms their identity and continues). If the access mechanism is unable to confirm their identity, it can reissue a request for the rules.
  • [0167]
    With reference to FIG. 11, first the access mechanism 114 checks to determine whether or not the rules are already determined useable (step S1100). If so, the process returns a “success” indication to the invoking process (step S1102).
  • [0168]
    If the rules have not already been determined to be useable (step S1100), then the rules are located. First it is determined whether or not the rules are packaged with the data (step S1104). If so, the rules are made available (by decrypting them, if needed) (step S1106). If the rules are successfully made available (e.g., decryption succeeds) (step S1108), then the rules are checked for integrity (step S1110). If the rules pass an integrity check, then a “success” indication is returned to the invoking process (step S1112), otherwise a “fail” indication is returned (step S1127).
  • [0169]
    If the rules are not packaged with the data (step S1104), then the access mechanism 114, determines whether the rules are on a device attached to the access mechanism 114 (steps S1116-S1118). If the rules are not found on any device, then the user is asked to provide the rules (step S1114). At that time the user can abort the process (step S1120), in which case a “fail” indication is returned to the invoking process (step S1127). If the user chooses not to abort but to provide rules, those rules are read (step S1122) and, if they are a correct set of rules (step S1124), made available (step S1106). If the rules are not a correct set of rules (step S1124), then the user is informed (step S1126) and is prompted again for the rules (step S1114).
  • [0170]
    Regardless of whether or not the rules are provided with the packaged data, once the rules have been decrypted they are stored in the access mechanism 114.
  • [0171]
    The process of executing an application to access the data according to the stored rules is described with reference to the flow chart shown in FIG. 12. For each data access operation to be performed by the application, first the operation is identified (step S1200) and the rules are checked (step S1202) to determine whether that operation is permitted (step S1204).
  • [0172]
    If it is determined (step S1204) that the operation is not permitted by the rules, a “failure” return-code is set (step S1206) and control is returned to the caller (operating system) (step S1208). On the other hand, if the operation is permitted (step S1204) then, if payment is determined to be acceptable (step S1210), then processing continues. (Payment is discussed further below.) If payment is determined to be unacceptable (step S1210), a “failure” return-code is set and control returns to the invoking application (steps S1206 and 1208).
  • [0173]
    If payment is determined to be acceptable (step S1210), then it is determined whether or not the rules apply any restrictions on the data (step S1212) (for example, whether or not the rules restrict the output format or amount of the data in some way). If it is determined that the rules restrict the data then the restriction is enforced (step S1214) and the I/O is performed based on the restriction (step S1216), otherwise the I/O is performed without restriction (step S1216).
  • [0174]
    After performing I/O (step S1216), a “successful” return code is set (step S1218), and control returns to the invoking application.
  • [0175]
    The Writing Operation
  • [0176]
    The process of writing data is described here with reference to FIG. 10(b). When an application attempts to write to a dataset, control is passed to the access mechanism 114 which opens the dataset for writing if it is not already open (steps S1020, S1022). Once opened, it is determined whether or not the dataset is to be protected (step S1024). The dataset (output file) would be protected if, for example, a protected dataset has been opened since the last time the access mechanism 114 cleared its memory or if the user indicated that output is to be protected (as when authoring a work).
  • [0177]
    Note that an output dataset may begin as unprotected and be written as unprotected (i.e., in the form it would have on a machine which does not have an access mechanism 114) and later additions to the dataset may require protection and therefore be written in the appropriate format. The transition between unprotected/protected data in a dataset are discussed below.
  • [0178]
    If the dataset is not to be protected (step S1024), control returns to the invoking process which writes the unprotected data (step S1026). On the other hand, if the dataset is to be protected (step S1024, then the rules are checked to determine whether or not output access is permitted (step S1028). If output access is not permitted, a denial operation is performed (step S1030). For example, depending on the rules, as part of this denial operation the access mechanism 114 could destroy the output data allowing randomized data to be written in their stead, could abort the function, or could abort the job. If access is permitted (step S1028), it is then determined whether a new data element is about to be written or whether new rules have been incorporated since the last write (step S1032). If either is the case, the rules are written (step S1034). After writing the rules (step S1034), or if neither was the case (step S1032), the data are encrypted if the rules so require (step 81036), and control returns to the invoking process (step S1026) where the (possibly encrypted) data are written.
  • [0179]
    Compatibility Issues
  • [0180]
    A protected dataset (packaged data) read by a system which does not employ an access mechanism 114 according to the present invention (or a dataset read by a system in non-protected mode) will be treated as data without any decryption taking place (by an access mechanism). In such a system, protected data elements will not be available to the user. This allows datasets (packaged data) freely to be copied and transmitted. Recipients will need to obtain any needed permission lists (rules) prior to being able to read the encrypted data in such datasets.
  • [0181]
    A non-protected (e.g., legacy) dataset (read using a system employing an access mechanism 114) that is treated as a protected dataset would require that rules be present before it would be accessed. The probability of such a mis-identification may be made vanishingly small, e.g., by computing a hash function of the data.
  • [0182]
    The user can be provided the opportunity to indicate that the dataset should be treated as unprotected. In order to do this, the access process described above with reference to FIGS. 10(a) and 11 allows a user to override the decision made in step S1002 as to whether or not the dataset is protected. Note that if a user incorrectly indicates that a protected dataset is unprotected, no access to the data would be available other than in encrypted (unusable) form.
  • [0183]
    Tamper Detection
  • [0184]
    If and when tampering is detected, the access mechanism 114 performs at least the following operations illustrated in FIG. 13. The cryptographic variables (e.g., keys) are destroyed (step S1305), all rules are destroyed (step S1302), all cleartext (un-encrypted) information is destroyed (step S1300), all files are closed (step S1304), and the device is otherwise deactivated (step S1306). While these operations are described sequentially, in preferred embodiments they occur simultaneously or in some concurrent or parallel order, as shown in FIG. 13. If some order must be imposed on these operations, the first priority is to erase the cryptographic variables (step S1305).
  • [0185]
    Operational Considerations
  • [0186]
    Certain operational procedures may also be important to maintaining the protections and controls inherent in the present invention. Specific operational procedures may be employed to prevent equipment being built that would operate with an access mechanism according to the present invention and that also contained methods for circumventing the protections and controls in the access mechanism.
  • [0187]
    These operational procedures involve inspection, analysis, testing, and perhaps other procedures followed by certification of authorized access mechanism implementations. The inspection might include design analysis and physical chip inspection. Upon successful inspection, a cryptographically sealed certificate is stored within the protection perimeter. Note that this certificate is one of the data items that is destroyed upon detection of tampering. The certificate is issued by an authorized Certification Authority (CA) and includes therein a decryption key issued by that CA.
  • [0188]
    In some preferred embodiments, the rule-encrypting key KR is encrypted using the encryption key corresponding to the decryption key included in the certificate in each device. Then, in order to obtain KR within the device, the device must have the decryption key which was stored in the certificate by the CA.
  • [0189]
    Payment
  • [0190]
    In our market economy, producers and distributors of goods and services expect to be compensated. Intellectual property producers and distributors are no exception. The needs of commerce have been a primary factor in the evolution of information technology throughout history. Many of today's information infrastructure activities also deal with billing and payment.
  • [0191]
    Existing payment mechanisms either assume that the parties will at some time be in each other's physical presence or that there will be a sufficient delay in the payment process for frauds, overdrafts, and other undesirable conditions to be identified and corrected. Many of these payment mechanisms have already begun to adapt in response to the conduct of business over networks. Entirely new forms of electronic payment are evolving.
  • [0192]
    The following is a representative (but not definitive) list of electronic payment systems (some of the following names are trademarks): Anonymous Internet Mercantile Protocol; “BITBUX” from “MICROSOFT” and “VISA”; CARI (Collect All Relevant Information) the Internet Voice Robot, uses virtual credit cards to provide secure transactions from the Web; “CHECKFREE” plans for expanding the way commerce is conducted on the Internet; “COMMERCENET” secure commerce on the Internet based on Secure HTTP; “CYBERCASH”; “DIGICASH”; “DOWNTOWN ANYWHERE” has a system using account numbers, and personal payment passwords; First Bank of Internet (FBOI); First Virtual Internet Payment System allows real payment on the Internet; IkP, A Family of Secure Payment Protocols from IBM; Internet Banking White Paper from WebTech; NetBill Electronic Commerce Project; “NetCash”; “NetCheque”; “NetChex”; “NetMarket”; “Netscape Communications Netsite Commerce Server” and “Netscape Navigator”; “NexusBucks”, “Open Market”; Security First Network Bank is an Internet Savings Bank; SNPP: A Simple Network Payment Protocol; Sun Internet Commerce Group; Virtual Bank of the Internet.
  • [0193]
    Some electronic payment systems operate in real time by communicating through the Internet or direct dial. Others employ a prepaid balance which is debited against merchant credits, with periodic batch updating and transmission.
  • [0194]
    It is envisioned that embodiments of the present invention will employ an appropriate payment mechanism such as are well known in the art. Accordingly, the actual payment mechanism is not specified.
  • [0195]
    Rules and Policies
  • [0196]
    The rules (provided together with or separately from the packaged data) embody the data owner's control policies with respect to a user's access rights to the data.
  • [0197]
    The present invention permits the owner of intellectual property to realize a gain by selling or licensing various levels of access rights to the property and then ensuring that access beyond those rights is not obtained. The present invention ensures that only such qualities and quantities of access as released by the owner (generally, in exchange for payment) are allowed.
  • [0198]
    The rules are preferably embodied in a permission list. An example of permissions in such a list is shown in FIG. 3, and was described above.
  • [0199]
    While the rules allowed are open ended, an example set of rules (access control parameters) is given below. Access control parameters may be combined to provide varying sets of capabilities and to implement the enforcement of various policies. Some parameters are independent of any other parameters; some parameters are mutually exclusive; and other parameters must be used in combination to define fully the actions to be allowed or disallowed.
  • [0200]
    No Restriction
  • [0201]
    This would be the status if no restrictions were placed on'the associated data. If this parameter is explicitly stated it overrides any contradictory parameter that may also be present. The data may be read, printed, executed, modified and copied.
  • [0202]
    No Modify
  • [0203]
    The associated data may not be edited or changed.
  • [0204]
    No Copy
  • [0205]
    The data may not be copied and a derivative work may not be made from the data.
  • [0206]
    No Execute
  • [0207]
    The data may not be executed.
  • [0208]
    No Print
  • [0209]
    The data may not be printed.
  • [0210]
    Print With Restriction of Type n
  • [0211]
    If the user prints after accessing the data, a simulated watermark will be printed as background or a header and/or footer will be placed on each page. The numeral n specifies the specific restriction to be applied, e.g., standard watermark (such as “do not copy”), personal (watermark such as “printed for name of user”), standard header/footer (such as “Company Name Confidential”), or personal header footer (such as “Printed for name of user”).
  • [0212]
    No Access
  • [0213]
    Any user access, including an attempt to execute, will retrieve only encrypted data (ciphertext). This is the default case when there are no rules associated with data or the rules are corrupted.
  • [0214]
    No Child Access
  • [0215]
    Unless the user has been identified as an adult (for example by use of a password or a token) access will not be allowed for items identified as “adult material.”
  • [0216]
    Access Cost=(unit, price)
  • [0217]
    Each time a unit of data (e.g., book, volume, chapter, page, paragraph, word, map, record, song, image, kilobyte, etc.) is opened, a cost of price is incurred.
  • [0218]
    Print Cost=(unit, price)
  • [0219]
    Each time a unit (e.g., page, file, image, etc.) is printed, a cost of price is incurred.
  • [0220]
    Copy/Transmit Cost=(unit, price)
  • [0221]
    Each time a unit (e.g., volume, file, record, page, kilobyte, image, etc.) is output, a cost of price is incurred.
  • [0222]
    Execute only
  • [0223]
    The user may execute a program but may not read, print, modify or copy it. This rule protects against disclosure of an algorithm.
  • [0224]
    A permission list consists of rules governing the qualities and quantities of access made available by the owner to a particular user or group or class of users, and defines those ways in which the user may (and may not) interact with the owner's data/information. An encrypted permission list (for example, encrypted rules 124 in FIG. 2) is made available by the owner to the user, generally in exchange for fees (in the commercial domain) (for example, payment 110 in FIG. 1). The system denies the user direct access to manipulate the permission list, although in some cases it may allow the user to view the permission list. (The permission list may include rules governing access to the permission list itself). Use of a permission list may be limited to a particular computer system, a particular token (such as a smart card), a user-supplied password, or any combination of these or other items.
  • [0225]
    At the discretion of the intellectual property (data) owner, a permission list may also be valid for future releases of the data. This allows, for example, a software owner to plan for future releases that resolve problems discovered in an initial software release. In this example, the user of a particular version of a program, for instance, Version 6, might be allowed to use a subsequent version of the program, version 6.1, without further payment and without needing to obtain a new permission list or license. One who had not already licensed Program Version 6 would be required to purchase a new permission list/license in order to use Program Version 6.1.
  • [0226]
    A permission list may authorize and permit the user of intellectual property to create a derivative product for which the original owner may or may not have rights. In the case of a derivative product for which the owner of the original intellectual property has no rights, the owner of the derivative intellectual property can unilaterally issue a permission list governing use of that intellectual property.
  • [0227]
    Program execution occurs when a computer device follows a series of steps, or instructions, expressed in some symbology. The program may be linear, with one step always following its predecessor without variation, or the program may involve branching based on comparison of variables related to internal or external events and status. In the field of computer science a distinction is sometimes made according to the time at which the instructions comprising the program are translated into the computer's machine language in order to control the operation of the computer. Accordingly, terms such as assembly, compilation, and interpretation are used. This distinction is not important with respect to the present invention. The term execution is used herein to refer to all forms of program execution.
  • [0228]
    Controlling Primary Distribution
  • [0229]
    As noted above, digital information is transmitted openly. Accordingly, the data are typically distributed in an encrypted form.
  • [0230]
    Enforcing an Authorized User List
  • [0231]
    In some cases, it is useful to have a rule which controls access to data for certain specific users or classes of users. For example, data may only be accessible to people over the age of eighteen, or to people having a rank greater than or equal to that of captain, or to managers have a security clearance greater than top-secret. In these cases, each user can be provided with a separate set of rules for that specific user. In other words, each user can be provided with a unique set of rules. However, if the status of a user changes, then the rules for that user have to be changed. Accordingly, it is useful and convenient to have the rules be parameterized based on the status of the user and then have the user's status provided to the access mechanism 114 in a secure fashion.
  • [0232]
    The invention can be used in combination with software and other identification technology (for example, biometric sensors) to limit data access to users that possess an appropriate physical or logical token (for example, a dongle or password), or personal characteristic (for example, a fingerprint pattern). The secure hardware (via tamper detection) eliminates the potential for modifying and subverting the identification software.
  • [0233]
    An embodiment having such a configuration is shown in FIG. 14, wherein the access mechanism 114 is connected to an external secure device 182 in order to obtain the user's status. Channel 183, connecting the secure device 182 and the access mechanism 114 is preferably a secure channel (within the security boundary 167), however, if it is insecure, the device 182 must send information to the access mechanism 114 in a protected (e.g., encrypted) manner.
  • [0234]
    Controlling Access and Use
  • [0235]
    The invention can restrict the qualities or quantities of access to data in any manner that can be calculated or enumerated. A non-exhaustive, representative set of examples is given below.
  • [0236]
    Access Control Qualities
  • [0237]
    (a) Local Display (for example, display of data on the computer's monitor).
  • [0238]
    (b) Printing (i.e., fixation in a form intelligible to a person).
  • [0239]
    (c) Copying (i.e., fixation on an electronic medium such as a disk or tape).
  • [0240]
    (d) Transmission (see below regarding controlling secondary distribution).
  • [0241]
    (e) Modification (i.e., changes to a copy of the primary distribution).
  • [0242]
    Access Control Quantities
  • [0243]
    (a) Number of read-accesses (where “read access” refers to any kind of examination or retrieval of data/information).
  • [0244]
    (b) Size of read-access.
  • [0245]
    (c) Expiration date.
  • [0246]
    (d) Intensity of access (number/total volume of read-accesses in a unit of time).
  • [0247]
    (e) Resolution of access (for example, in the context of a map this would be the maximum scale allowed; for sensor data this would be the precision (number of bits) returned to the user).
  • [0248]
    (f) Delay (Accesses are permitted to data after a delay of n time units. This allows different user groups to view the same dataset with different results to queries. For example, a stock broker would be able to view the latest data, while a customer, paying less for the service, might receive data that are delayed by 15 minutes.)
  • [0249]
    Access Control Granularity
  • [0250]
    The above access control policies can be applied differently to different portions of the intellectual property. For example, a document's chapters might be controlled at different levels of quantity and quality; a map's information might be controlled differently at different latitudes and longitudes; portions of an image may be restricted in availability, resolution, and the like.
  • [0251]
    Controlling Secondary Distribution
  • [0252]
    The invention provides absolute control of secondary distribution of data (for example, preventing or restricting potential use).
  • [0253]
    Transmission of (an unencrypted copy of) the primary distribution data (either to a network or to an output device such as a tape or disk) can only be effected when the system, acting under the rules embodied in the owner's permission list, allows external output. Denial of permission to transmit an unencrypted copy may result in no output or may result in transmission of an encrypted copy (for which the recipient must then negotiate permissions in order to use). Alternately, denial of permission to transmit may result in the transmission of random data, thereby denying the user knowledge of whether or not encrypted data was transferred.
  • [0254]
    Since all storage of data on internal non-volatile memory devices (for example, disks, flash memory, and the like) is encrypted, this ensures that a physical attack on the system will not result in compromise of plaintext.
  • [0255]
    Controlling Printing or Display
  • [0256]
    Printing or display of data is controlled in a manner similar to that used for controlling secondary distribution. One option is to disallow the ability to send particular information to a printer or display. If printing or display is allowed, the data stream to the output device is encrypted to ensure that an unauthorized user cannot intercept data sent to an external printer or display (that is, to a printer or display outside the tamper-detect protected enclosure). This necessitates that the receiving device contain a decryption subsystem. Thus, as shown in FIG. 8, data from access mechanism 114 via I/O controller 165 to either the controlled printer 178 or the controlled display 180 is encrypted on channels 174 and 176, respectively.
  • [0257]
    As discussed above when addressing the threat of capture of the output signal, an encryption mechanism is used for protecting data transfers to printer or display so that, if the data owner wishes, printing or display may be restricted to a specific printer or display device.
  • [0258]
    Instead of disallowing printing or display, these functions may be allowed with limitations as imposed by the owner. For example, output might contain a header/footer on each page indicating the identity of the authorized user; a watermark might be printed in the background; or other identifying material might be placed on each image. Of course, the data stream would be encrypted (as above) to prevent interception.
  • [0259]
    Document marking and identification techniques can be used to discourage the illicit copying of documents distributed in either paper or electronic form. The exact form of printer characters as well as line and word shifting have been used for document marking and identification (“Document Marking and Identification using both Line and Word Shifting,” Low, S. H., et al. 1995 INFOCOM Proceedings, IEEE, pp. 853-, 1995).
  • [0260]
    One of the major technical and economic challenges faced by electronic publishing is that of preventing individuals from easily copying and illegally or without authorization distributing electronic documents. Cryptographic protocols used to discourage the distribution of illicit electronic copies are described in “Copyright Protection for Electronic Publishing over Computer Networks,” Choudhury, A. K., et al., IEEE Network, pp. 12-20, May-June 1995.
  • [0261]
    Preferably, each controlled peripheral device (e.g., controlled printer 178 or display 180) is provided with an access mechanism which allows the device to process data it receives. This allows the data being sent to a controlled peripheral device from a system using an access mechanism to be treated as either a copy of data or a derivative work that is being sent to another user (that happens to be a peripheral). In other words, if a peripheral device contains an access mechanism, the data sent to the device can be packaged data. Using this approach, requires that the receiving access mechanism (the peripheral's access mechanism) may include the rules (permission list(s)) in order to obtain the key needed to decrypt the data in order to print or display them (or do whatever the peripheral does with data). If no permission list is included and the data are encrypted by the printer's public key, the printer's access mechanism decrypts the data and prints them (just as they would have been printed had the unencrypted data stream been received by a standard printer).
  • [0262]
    The access mechanism in the controlled peripheral device need not be a full system whenever the peripheral device is limited in function, for example, to only printing or displaying data. The peripheral and its access mechanism subsystem must be in a tamper-detecting enclosure.
  • [0263]
    As noted, it is envisioned that a computer or other device equipped with an access mechanism will be used with a controlled output device (printer or display) so equipped. If the data owner allows (via the rules) output (e.g., printing) to a controlled output device (e.g., printer) (equipped with an access mechanism), then there are two possibilities. The access mechanism in the user's computer can process any required payment and send the data, encrypted with the device's public key, to the printer or display for output. Alternately, the access mechanism processes the data as a derivative work (discussed below), packaging rules with the data, and the output device is responsible for separate payment (for example, allowing retention and multiple copies).
  • [0264]
    In order to limit the number of copies output, a short time window is included in the rules so that the recipient cannot capture (record) the file and replay it multiple times to the output device. Additionally, the access mechanism in the output device can contain a relatively small non-volatile memory that would hold the checksum of a file that is not to be output again for a certain time period, say, for 15 minutes from the first output (and an output permission list in the rules would specify “n copies, only valid for 15 minutes from x to x+15”).
  • [0265]
    In the case of standard output devices (non-controlled, i.e., without access mechanisms), data are provided unencrypted (to the extent that the rules permit and payment has been provided).
  • [0266]
    Controlling Distributions of Derivative Works
  • [0267]
    In many application environments where intellectual property is created it is common to include extracts from other intellectual property. Such environments include writing scholarly papers, reviews, regulations, etc. The intellectual property containing the extract is a so-called derivative work. The intellectual property from which the extract was copied is called the parent work.
  • [0268]
    This invention controls the distribution of derivative works (that is, works created using information owned by another). Transmission of (an unencrypted copy of) a derivative work (to a network, to an output device such as a tape or disk, or to a printer or display device or the like) can only be effected when the system, acting under the rules embodied in permission lists created by each of the owners of any intellectual properties used in the derivative work, allows external output. Denial of permission to transmit an unencrypted copy may result in no output or may result in transmission of an encrypted copy (or, as noted above, may result in the transmission of random data). Use of an encrypted copy of a derivative work will, in general, require permissions from the owners of the derivative work as well as of the original works. The permission list associated with a work is incorporated into the permission list of any derivative work, either directly or by reference. License fees and restrictions imposed by the owner of a work are inherited by any derivative works. An n-th generation derivative work inherits the license fees and restrictions of each of its n−1 ancestors. If permission lists (rules) are incorporated by reference, the access mechanism ensures that the referenced permission lists (rules) are present (or it will deny access).
  • [0269]
    For example, if printing of an original work requires a watermark, then printing of any derivative work (if allowed at all) will require a watermark. This monotonicity/cascading of restrictions (i.e., each generation of a work must be at least as restricted as the prior generation) ensures that a derivative work that is only trivially changed from the original does not escape restrictions imposed on the original.
  • [0270]
    Creation of a derivative work for subsequent distribution requires an distributor 190 similar to distributor 102 shown in FIGS. 1 and 5. However, derivative work distributor 190 (shown in FIG. 15) includes an access mechanism 114 and can process, as input data, packaged data 108 a. The output produced by distributor 190 is packaged data 108 b which includes any rules (or references to rules) required by data which is derived from the input packaged data 108 a. The access mechanism 114 within distributor 190 incorporates a global rule which enforces the distribution of rules with derivative works.
  • [0271]
    As noted earlier, the difference between the embodiments of the distributors 102 and 190, shown in FIGS. 1 and 15, respectively, is that the distributor 102 shown in FIG. 1 does not include an access mechanism 114. Accordingly, the distributor 102 deals only with newly created data (that is, with non-derivative data). The embodiment shown in FIG. 15 includes that of FIG. 1, and can also deal with input of protected data (previously packaged by a distributor). The embodiment of the system shown in FIG. 1 can be implemented purely in software, whereas the embodiment shown in FIG. 15 requires some hardware implementation.
  • [0272]
    It is envisioned that a standard computer, equipped with an access mechanism 114 will function as an authoring/distribution system. This allows all computer users to become authors and to incorporate previously published material into derivative works.
  • [0273]
    The rules associated with the parent work determine whether creation of derivative intellectual property is permitted, as well as the inheritance rules for incorporating the rules of the parent into the derivative work. Note that the rules derived from the parent apply only to the extract and that these rules applying to the extract need not be identical to the rules of the parent. The rules applying to the extract are specified by the owner of the parent, not by the creator of the derivative work.
  • [0274]
    For example, the rules applying to the extract might require payment to the owner of the parent for use of the derivative work containing the extract. If the creator of the derivative also required payment, the user of the derivative would make payments to two owners for use of the derivative. In an automated system the details of such multiple payments would be invisible to a user.
  • [0275]
    This invention enables such payment arrangements that would otherwise be prohibitively difficult and complex.
  • [0276]
    Another example relates to integrity and moral rights of the owner of the parent. The owner might wish to ensure that an extract was made without alteration or deletion, or that certain related information were included (for example, to prevent the extract from being taken out of context).
  • [0277]
    Data extracted from the parent comes with rules already attached or associated. These rules propagate into the derivative, but are applicable only to the extract. Extracts from the same parent may or may not share rules. Extracts from multiple parents may result in multiple rules applying to different extracts. As noted, a derivative work may contain references to data and rules rather than the actual data and rules. For certain commercial products it may be desirable to have the final packaged data 108 b be fully self-contained. Accordingly, the packaged data 108 b output from this distributor 190 may require further processing in order to optimize it for commercial distribution. Such optimization might include, for example, obtaining and including copies of all rules and data referenced in the package.
  • [0278]
    Extract Authentication
  • [0279]
    Digital signatures authenticate digital information by providing proof that information received is precisely that which was sent, with no changes. This system provides a similar capability to authenticate extracts (quotes) of information.
  • [0280]
    Application environments, such as providing a legal trail of evidence or authenticating that a quotation is accurate, are enhanced by the ability to prove that the information has not been subject to unauthorized alteration.
  • [0281]
    Authenticated extraction is implemented by creating an extraction editor, that runs in the access mechanism 114. This extraction editor, possibly under human direction, can extract selected text but is unable to change the extract. When extraction is complete, the access mechanism 114 digitally signs the extract with a digital signature. This digital signature includes identification of the specific computer in which the access mechanism 114 is executing as well as identification of the specific extraction editor used.
  • [0282]
    The extraction editor can, optionally, be permitted or required to insert ellipsis to indicate deletions, and certain specified insertions, such as, for example, “[sic],” might be allowed.
  • [0283]
    In another embodiment, a so-called hyperlink can be used in newly created data to indicate the insertion location of a quotation. When an output operation is performed, the access mechanism 114 creates a separate quotation, with its own checksum and digital signature. Any recipient of data containing the hyperlink can verify that the contents of the hyperlink were captured by access mechanism 114 and delivered unchanged.
  • [0284]
    Controlling Use of Executable Software
  • [0285]
    Control of Primary Distributions
  • [0286]
    The invention enables the creator of executable software to restrict the use of the software to only those who have acquired permissions for various of its capabilities. Executable software will be distributed in encrypted form, externally treated as data, as described above. In general, execution of a program can be controlled for multiple purposes in a number of ways. Purchase of a license to execute software can be evidenced by a cryptographically protected certificate which is decrypted internally by the access mechanism 114. The executable software can check for the presence of the certificate, or for permission keys or other information contained in the certificate, once or many times during execution. Since the algorithm embodied in an executable program may be valuable intellectual property, the access mechanism 114 can prevent a licensee from reading, copying, or modifying unencrypted executable code. In order to prevent disclosure of the unencrypted executable code, it is kept wholly within the security perimeter of the access mechanism 114 for execution.
  • [0287]
    Elimination of the Distributor (Middleman)
  • [0288]
    The invention enables the executable software owner to make copies easily available on a network server in encrypted form. Users may download the executable software and then separately purchase the rights to utilize the executable software. Thus, a standard purchase of software may be accomplished electronically, dealing with the owner's electronic commerce system. Thereby, the entire process of acquiring the executable software package and then purchasing the rights to use it may be effected without going through a distributor.
  • [0289]
    Offering discounted upgrades to software licensees is also simplified. When a licensee claims eligibility for a discounted upgrade the executable software owner can check the record of purchase of rights for the prior version of the product. Once again, the entire process can be automated.
  • [0290]
    Simplification of Configuration Management
  • [0291]
    The executable software owner can elect to make available on a network server product improvements that operate with existing permission lists, thus immediately releasing product improvements and fixes.
  • [0292]
    Multiple levels of product capability can be incorporated into a single release and can be selectively enabled by different permission lists. The tailoring of different distributions, with differing capabilities is no longer necessary.
  • [0293]
    Active Control of Capability of Executable Software
  • [0294]
    The invention's control of distribution of data or information (that are not executable software) may be characterized as passive or transparent in that no changes are required in the data or information for them to be protected. The permission list that controls their use may be separately created, packaged, and supplied.
  • [0295]
    The control of primary distribution of data or information as well as the secondary distribution or distribution of modifications (derivatives) of data or information is passive. However, the invention's control of executable software capability is active and requires that the executable software developer use the programming interface provided by the system. At each point where the developer requires authorization, the executable software requests a permission-check. As a result, the process of FIG. 16 is performed. If the requisite authorization is received, the function of the software is performed. If authorization is denied, an alternative action is chosen. The system may itself take certain actions including, for example, terminating a program or erasing data, when authorization is denied. As executable software is distributed in encrypted form, it can only be decrypted and executed (used) on a machine employing the access mechanism of the present invention.
  • [0296]
    With reference to FIG. 16, first the operation is identified (step S1600) and the rules are checked (step S1602). Next it is determined whether the rules permit the operation (step S1604). If the operation is not permitted (or it is permitted but payment is not acceptable (step S1606)), then it is determined whether any system action is required (step S1608). If no system action is required, the return code for “not allowed” is set and control is returned (step S1610), otherwise the system action is performed (step S1612) after which the return code for “not allowed” is set and control is returned (step S1610).
  • [0297]
    If the operation is permitted (step S1604) and payment is acceptable (step S1606), then the return code for “allowed” is set (step S1616).
  • [0298]
    The invention can be used to restrict the qualities or quantities of executable software execution in any manner that can be calculated or enumerated. Representative non-exhaustive examples of restrictions are given below. These restrictions may combined in any fashion.
  • [0299]
    Levels of Capability
  • [0300]
    Access to Specific Parts of Code or Features
  • [0301]
    Control of sizes or quantities that can be handled. For example, files may be allowed up to a specific size; complexity or accuracy of a solution may be limited, number of parameters or data points may be restricted, etc.
  • [0302]
    Quantitative Modifiers of Levels of Capability
  • [0303]
    Control of expiration dates, time of use, number and frequency of uses and permitted users. For example, rights to use of a file of data (whatever it contains) may expire on a certain date; access to certain data may be limited to certain times of day, days of the week or specific dates; a user may only be allowed to access certain data a specified number of times (or a specified number of times per day); or access to some data may be restricted based on the identity of the user.
  • [0304]
    Control of Secondary and Derivative Executable Software Distributions
  • [0305]
    This is nandled in the same fashion as are data files, as described above.
  • [0306]
    Control of Executable Software as a Module of Other Executable Software
  • [0307]
    When protected executable software is incorporated into or used by other executable software on the system for which it was licensed, any limitations on its execution are maintained in the new context.
  • [0308]
    Restricting Use to Certified Software
  • [0309]
    The access mechanism 114 can be factory configured to restrict operation only to such software as is certified (e.g., by using a digital signature to ensure that the software was received unaltered from a certified source). Other contemplated applications include key escrow (also called “data recovery”) systems (described below), systems for counting election ballots, systems for exchanging cryptographic data or algorithms, and systems for safeguarding financial, medical, or other personal data. Further, a system employing an access mechanism may be used to ensure that such software is not modified after being received or accessed for execution.
  • [0310]
    Process Control
  • [0311]
    Computer control of processes, is the basis for automation and quality control in many industries. This technology extends into various specialties such as computer-aided manufacturing, control systems engineering, concurrent engineering, expert systems, intelligent sensors, just-in-time manufacturing, programmable logic controllers, robotics, robotic programming languages, and visualization techniques in engineering.
  • [0312]
    Formula, processes, procedures, and techniques may convey product differentiation, aesthetic and functional innovation, and increased cost-effectiveness. The computer programs and data involved in process control may constitute valuable intellectual property. The mechanisms of the present invention permit such data to be stored in process-control computers, transmitted to suppliers and subcontractors and otherwise employed without unauthorized disclosure, substitution, or modification.
  • [0313]
    The permissions associated with process control data may, for example, allow execution only—reading or observing the data would be prohibited. Execution may be restricted to specific equipment and to specific times. In general, the process controller is external to the equipment implementing the process. Hence, communication between the process controller and the process equipment must be cryptographically protected. Like the access mechanism in a controlled computer peripheral discussed herein, the access function in the process equipment need not be a full system whenever the peripheral device is limited and can not output data.
  • [0314]
    Key Escrow (Data Recovery) Systems
  • [0315]
    This system allows a provider of key escrow cryptographic executable software to require, by using a rule, certification that a key has been installed and deposited with a specified certification authority in order for the executable software to function. The access mechanism ensures the integrity of executable software that uses cryptographic executable software (whether or not key escrow), guarding against change or replacement.
  • [0316]
    Control of Classified Data
  • [0317]
    The invention can be used to support limitations on the (primary and secondary) distribution of data, access to data, and distribution of derivative data where the data are classified. Similarly, the execution of classified programs, or programs operating on classified data may be controlled by the system.
  • [0318]
    Ensured Issuance of Receipts
  • [0319]
    This system can be used to ensure that a receipt is issued under a number of circumstances, as demonstrated by representative examples given below. A software program (or electronic mail message) may request that a receipt be issued whenever it is loaded or executed (or when a mail message is received); a receipt may be issued when a mail message is read for the first time; or a program will not be loaded or executed (or mail opened for reading) unless the user first agrees to allow a receipt to be issued.
  • [0320]
    Ensuring Privacy
  • [0321]
    This system can be used to ensure privacy of sensitive records in a database. Examples include financial, census, medical, and political databases and the like. The system can allow inquiries that provide statistical summaries but do not reveal information about individuals. The rules would be used to limit the queries that might be posed.
  • [0322]
    Owner Control/Privileges
  • [0323]
    At the time of purchase the identity of the owner may be stored within the access mechanism. The access mechanism may allow the owner to place a global set of rules (a global permission list) in the mechanism. These global rules could control, for example, hours of access (e.g., when the computer might be operated) based on a clock within the access mechanism or an external time reference with which the access mechanism communicates; acceptable software which can be run using the access mechanism (i.e., a list of those software products that would be allowed to be used, thus enforcing a system administrator's configuration control rules); user and-password lists, and the like. A user can thereby customize a particular access mechanism.
  • [0324]
    The rules may also include or specify certain programs to be run under certain conditions. For example, if the rules specify that all printed output must contain a watermark, the rules might also provide the watermark generating program. In these cases, the programs are either pre-loaded into the access mechanism 114, or are loaded when needed. These programs will then be executed when the corresponding rules or functions are invoked. For example, various types of watermark programs can reside in the access mechanism 114, and, depending on the rules, the appropriate one of these can be selected and executed.
  • [0325]
    Note that the data structures in FIGS. 2 and 6 depict logical organizations of the data. However, the actual physical format of the data depends on the type of the data as well as on the manner in which the data are to be used. Further, as noted above, the data package may be distributed in many ways, including networks, magnetic media, CD-ROM, semiconductor memory modules, and wireless broadcast and the like. In certain types of data distribution, e.g., continuous cable or wireless broadcast, a user may wish to begin accessing the data at an arbitrary point during its distribution. For example, if the data represent a broadcast movie which begins at 8 p.m., a particular user may only begin viewing at 8:30 p.m. In this case the user will have to initiate reception of the distribution while it is in progress. Accordingly, as shown in FIG. 17(a), in some embodiments, the packaged data are distributed in discrete packets 236 of data. The packets 236 include information 238 which enables a user to synchronize with the data distribution and further enables the user to begin accessing the data according to the rules. An example of such a packetized stream of data is shown in FIG. 17(b) wherein the stream 234 consists of discrete packets 236 of data, each packet containing synchronization data 238.
  • EXAMPLES
  • [0326]
    The following examples indicate some envisioned data and its packaging and rules. These examples are only intended to show some of the envisioned uses of the present invention, and are in no way intended to limit its uses.
  • [0327]
    Books
  • [0328]
    With reference to FIG. 18(a), a digital book 191 consists of an abstract 192, an index 194, and various chapters 196. Each chapter 196 comprises sections 198, and each section comprises text 200 and FIGS. 202. The distributor can decide to package the book 191 such that the abstract 192 and the index 194 are available for browsing, but all other data are protected (encrypted). If the rules specify that the text is restricted in certain ways, then the packaged data structure 108 has the form shown in FIG. 18(b), wherein encrypted body part 120 includes all chapters 196, unencrypted body part 122 includes the abstract 192 and index 194, and encrypted rules 124 contains the encrypted version of the rules.
  • [0329]
    Movies
  • [0330]
    With reference to FIG. 19(a), a movie 204 can be made such that different parts of the movie combine to form either a trailer 206, a G-rated version (from G-rated parts 208), an R-rated version (formed from G-rated parts 208 and R-rated parts 210) or an X-rated version (formed from G-rated parts 208, R-rated parts 210 and X-rated parts 212). The packaged data structure 108 for this movie has the form shown in FIG. 19(b), wherein encrypted body part 120 includes all the G, R and X-rated parts 208-212, unencrypted body part 122 includes the trailer 206, and encrypted rules 124 contains the encrypted version of the age-based rules which control viewing of the various versions of the movie.
  • [0331]
    In one embodiment, as shown in FIG. 19(c), a movie may be released with a main body 207 (having elements common to all three versions) and sections for each of the G, R and X-rated parts (208, 210, 212, respectively). Sections of the movie are selected from one of the rated parts, depending on the permission level (G, R or X) set. FIG. 19(d) shows packaged data structure 108 for such an arrangement.
  • [0332]
    Software
  • [0333]
    With reference to FIG. 20(a), a software program such as, for example, a word-processor 214 may include a controlled file access part 216, an editor 218, a grammar checker 220, and other features 222. The rules obtained by the user will govern the features of the software that may be used and the quantities of data that may be processed. The rules shown in FIG. 20(c) indicate that the user may not employ the grammar checker and may operate on no more than nine files. The packaged data structure for this software (without rules) 150 is shown in FIG. 20(b), wherein encrypted body part 120 includes the file access mechanism 216, the grammar checker 220 and various other functions 222, and unencrypted body part 122 includes the editor 218. The encrypted rules 124 are shown separately in FIG. 20(c).
  • [0334]
    Documents
  • [0335]
    With reference to FIG. 21(a), a document such as a legal document 224 comprises paragraphs 226 of words 228. In order to limit access to non-redacted portions of the document, the rules would require blacking out all redacted words. Accordingly, the corresponding packaged data structure is shown in FIG. 21(b), wherein encrypted body part 120 includes the redacted portions of the document and unencrypted body part 122 contains the non-redacted portions of the document.
  • [0336]
    Map Image Data
  • [0337]
    With reference to FIG. 22(a), map image data 230 may be available at three resolutions (high, medium and low). The rules may specify that people with a security clearance of greater than “top-secret” can view the data at high resolution, and all non-military users can only view the map data at low resolution. The corresponding packaged data structure is shown in FIG. 22(b), wherein encrypted body part 120 includes all data beyond low resolution (that is, those data required for medium and high resolution) and unencrypted body part 122 contains the low resolution data.
  • [0338]
    Global Positioning System (GPS) Software
  • [0339]
    With reference to FIG. 23(a), GPS software includes an output routine 232 which can produce output at various degrees of accuracy. The degree of accuracy depends on the security clearance of the user. A corresponding packaged data structure is shown in FIG. 23(b), wherein encrypted body part 120 includes the resolution calculation routine 232 and unencrypted body part 122 contains the other parts of the GPS software 230.
  • [0340]
    Relationship Among Rule Sets
  • [0341]
    In some embodiments, the access mechanism may be supplied with a set of rules built-in. In such an access mechanism the built-in rules might include rules that can or cannot be overruled (made less restrictive) by rules provided with packaged data. These initial rules can perform a number of functions and implement a number of policies. As examples, the access mechanisms provided in controlled output devices can include built-in rules (that cannot be overruled) which limit the device only to being an output device; or, the access mechanism provided with a VCR or a videodisc player can include rules (that cannot be overruled) which require the device to enforce the copyright laws of the country in which the device is sold. Whether or not internal built-in rules can be overruled by rules provided externally can be specified in the internal rules themselves.
  • [0342]
    While the present invention may be used to protect intellectual property by controlling access to that property, the mechanisms discussed herein are technical in nature and are independent of any form of legal protection—a purely technological approach has been presented to controlling access to data. Indeed, the invention offers the intellectual property owner the opportunity to restrict access and use of his or her data beyond the protections that may be available in law. The protection offered by the present invention may be used to enforce rights in intellectual property whether the protection at law is categorized as copyright, trade secret, contract, or something else. The cost-benefit tradeoff of seeking protection at law must be made by those with a vested interest in the intellectual property.
  • [0343]
    Typical computer systems are implemented at various levels, each level effectively defining a different virtual machine. Generally, each level of implementation can access the levels below it. In many systems it is desirable to have each level only access the level immediately below it. In that way, various policies can be enforced.
  • [0344]
    Typically the higher level virtual machines are implemented in software and the lower level machines are implemented in hardware. However, there is no precise hardware/software boundary between levels.
  • [0345]
    With reference to FIG. 24, for example, a computer system has a high-level application environment (level L4). These applications invoke (call) operating system level (L3) processes to perform various system functions. The OS level (L3) processes in turn invoke lower-level Basic Input/Output System (BIOS) machine dependent instructions as required (level L2). Note that application level (L4) programs might be permitted to bypass the OS level (L3) and invoke BIOS level (L2) processes directly, thereby avoiding any OS level (L3) policy checking and enforcement.
  • [0346]
    As an example, an application (executing a level L4) program which wishes to open a particular named file would invoke an operating system “open” procedure for that named file. The OS determines the location of the file (using, for example, an internal map between file names and locations) and then invokes a lower level (L2) BIOS routine to perform the actual seek to the file and the open and read. However, the application program might be permitted to bypass the operating system's “open” process and invoke the BIOS routines directly.
  • [0347]
    It is desirable to implement the access control mechanisms of the present invention at a low level, preferably at or below the BIOS level (level L1). This prevents users from by-passing the access control mechanisms of the invention and thereby circumventing the rule enforcement.
  • [0348]
    Thus, a system for controlling access and distribution of digital property is provided. One skilled in the art will appreciate that the present invention can be practiced by other than the described embodiments, which are presented for purposes of illustration and not limitation, and the present invention is limited only by the claims that follow.

Claims (80)

What is claimed is:
1. A method of controlling access to data comprising the steps of:
protecting portions of the data;
determining rules concerning access rights to the data;
preventing unauthorized access to the protected portions of the data other than in a non-useable form; and
limiting each and every access to the data only in accordance with the rules as enforced by a mechanism protected by tamper detection.
2. A method of distributing data for subsequent controlled use of the data by a user, the method comprising the steps of:
protecting portions of the data;
preventing access to the protected portions of the data other than in a non-useable form;
determining rules concerning access rights to the data;
protecting the rules; and
providing the protected portions of the data and the protected rules;
whereby the user is provided controlled access to the data only in accordance with the rules as enforced by a mechanism protected by tamper detection.
3. A method of distributing data for subsequent controlled use of the data by a user, some of said data having access rules already associated therewith, the method comprising the steps of:
protecting portions of the data;
preventing access to the protected portions of the data other than in a non-useable form;
determining rules concerning access rights to the data;
combining with said determined rules any rules previously associated with the data;
protecting the combined rules; and
providing the protected portions of the data and the protected combined rules;
whereby the user is provided controlled access to the data only in accordance with the combined rules as enforced by an access mechanism protected by tamper detection.
4. A method of controlling secondary distribution of data, the method comprising the steps of:
protecting portions of the data;
preventing access to the protected portions of the data other than in a non-useable form;
determining rules concerning access rights to the data;
protecting the rules;
providing the protected portions of the data and the protected rules to a device having an access mechanism protected by tamper detection; and
limiting transmission of the protected portions of the data from the device only as protected data or in accordance with the rules as enforced by the access mechanism.
5. A method of controlling access to data with a computer system having an input/output (i/o) system for transferring data to and from all i/o devices, said i/o system being specific to said computer system, the method comprising the steps of:
protecting portions of the data;
determining rules concerning access rights to the data;
preventing access to the protected portions of the data other than in a non-useable form; and
limiting each and every access to the data only in accordance with the rules as enforced by said i/o system.
6. A method of accessing data having protected data portions and rules concerning access rights to the protected portions, the method comprising the steps of:
preventing access to the protected portions other than in a non-useable form; and
limiting each and every access to the data only in accordance with the rules as enforced by a mechanism protected by tamper detection.
7. A method as in any one of claims 1, 3, 4 and 5 wherein
the step of protecting portions of the data comprises the step of encrypting the portions of the data, and wherein
the step of preventing access prevents access to the encrypted portions of the data other than in encrypted form.
8. A method as in
claim 7
, wherein said step of encrypting encrypts the portions of the data with a data encrypting key, said data encrypting key having a corresponding data decrypting key, said method further comprising the step of:
encrypting the data encrypting key.
9. A method as in
claim 8
, further comprising the step of:
providing a decrypting key corresponding to said key encrypting key.
10. A method as in any one of claims 2 and 3, wherein
the step of protecting the rules comprises the step of encrypting the rules.
11. A method as in
claim 10
, wherein
the step of protecting portions of the data comprises the step of encrypting the portions of the data, and wherein
the step of preventing access prevents access to the encrypted portions of the data other than in encrypted form.
12. A method as in
claim 11
, wherein
the rules are protected such that they can be viewed and they cannot be changed.
13. A method as in
claim 11
, wherein
the step of encrypting the rules comprises encrypting the rules with a rule encrypting key,
the step of encrypting the portions of the data comprises encrypting the portions of the data with a data encrypting key,
the method further comprising the step of encrypting the data encrypting key.
14. A method as in any one of claims 1, 2, 3, 4, 5 and 6, wherein the data represent at least one of software, text, numbers, graphics, audio, and video.
15. A method as in any one of claims 1, 2, 3, 4, 5 and 6, wherein the rules indicate which users are allowed to access the protected portions of the data, the method further comprising the step of
allowing the user access to a protected portion of the data only if the rules indicate that the user is allowed to access that portion of the data.
16. A method as in any one of claims 1, 2, 3, 4, 5 and 6 wherein the rules indicate distribution rights of the data, the method further comprising the step of:
allowing distribution of the data only in accordance with the distribution rights indicated in the rules.
17. A method as in any one of claims 1, 2, 3, 4, 5 and 6, wherein the rules indicate access control rights of the user, the method further comprising the step of:
allowing the user to access the data only in accordance with the access control rights indicated in the rules.
18. A method as in
claim 17
, wherein the access control rights include at least one of:
local display rights,
printing rights,
copying rights,
execution rights,
transmission rights, and
modification rights.
19. A method as in any one of claims 1, 2, 3, 4, 5 and 6, wherein the rules indicate access control quantities, the method further comprising the step of:
allowing access to the data only in accordance with the access control quantities indicated in the rules.
20. A method as in
claim 19
, wherein the access control quantities include at least one of:
a number of allowed read-accesses to the data;
an allowable size of a read-access to the data;
an expiration date of the data;
an intensity of accesses to the data;
an allowed level of accuracy and fidelity; and
an allowed resolution of access to the data.
21. A method as in any one of claims 1, 2, 3, 4, 5 and 6, wherein the rules indicate payment requirements, the method further comprising the step of:
allowing access to the data only if the payment requirements indicated in the rules are satisfied.
22. A method as in any one of claims 1, 2, 3, 4 and 6, further comprising the step of destroying data stored in the mechanism when tampering is detected.
23. A method as in
claim 5
, further comprising the step of destroying data stored in the i/o system when tampering is detected.
24. A method as in any one of claims 2, 3 and 4, wherein the step of providing provides the protected portions and the protected rules together as a package.
25. A method as in any one of claims 2, 3 and 4, wherein the step of providing provides the protected portions and the protected rules separately.
26. A method as in any one of claims 2, 3 and 4, further comprising the step of:
providing unprotected portions of the data.
27. A method as in
claim 24
, further comprising the step of:
providing unprotected portions of the data in the package.
28. A method as in any one of claims 1, 2, 3, 4, 5 and 6, wherein said rules relate to at least one of:
characteristics of users;
characteristics of protected data; and
environmental characteristics.
29. A method as in
claim 6
, wherein the protected data portions are encrypted and wherein
the step of preventing access prevents access to the encrypted portions of the data other than in encrypted form.
30. A storage device, readable by a machine, tangibly embodying a package of data comprising:
protected portions of data; and
rules concerning access rights to the data, whereby a user is provided controlled access to the data only in accordance with the rules as enforced by a mechanism protected by tamper detection.
31. A device for controlling access to data, the data comprising protected data portions and rules concerning access rights to the data, the device comprising:
storage means for storing the rules; and
means for accessing the protected data portions only in accordance with the rules, whereby user access to the protected data portions is permitted only if the rules indicate that the user is allowed to access the portions of the data.
32. A device as in
claim 31
, further comprising:
means for storing data accessed by said means for accessing.
33. A device for displaying images represented by data comprising protected data portions and rules concerning access rights to the data, the device comprising:
a tamper detecting mechanism;
means for storing the rules;
means for accessing the data only in accordance with the rules, whereby user access to the protected data portions is permitted only if the rules indicate that the user is allowed to access the portions of the data, said access being enforced by said tamper detecting mechanism; and
means for displaying the images represented by the accessed data.
34. A device for outputting images represented by data comprising protected data portions and rules concerning access rights to the data, the device comprising:
a tamper detecting mechanism;
means for storing the rules;
means for accessing the data only in accordance with the rules, whereby user access to the protected data portions is permitted only if the rules indicate that the user is allowed to access the portions of the data, said access being enforced by said tamper detecting mechanism; and
means for outputting the images represented by the accessed data.
35. A device for outputting an audio signal represented by data comprising protected data portions and rules concerning access rights to the data, the device comprising:
a tamper detecting mechanism;
means for storing the rules;
means for accessing the data only in accordance with the rules, whereby user access to the protected data portions is permitted only if the rules indicate that the user is allowed to access the portions of the data, said access being enforced by said tamper detecting mechanism; and
means for outputting the audio signal represented by the accessed data.
36. A device for outputting an output signal based on data comprising protected data portions and rules concerning access rights to the data, the device comprising:
a tamper detecting mechanism;
means for storing the rules;
means for accessing the data only in accordance with the rules, whereby user access to the protected data portions is permitted only if the rules indicate that the user is allowed to access the portions of the data, said access being enforced by said tamper detecting mechanism; and
means for outputting the output signal represented by the accessed data.
37. A device for generating an output signal corresponding to data comprising protected data portions and rules concerning access rights to the digital data, the device comprising:
a tamper detecting mechanism;
means for storing the rules;
means for accessing the digital data only in accordance with the rules, whereby user access to the protected data portions is permitted only if the rules indicate that the user is allowed to access the portions of the data, said access being enforced by said tamper detecting mechanism; and
means for generating the output signal from the accessed data.
38. A device as in
claim 31
, wherein the protected data portions are encrypted using a data encrypting key and wherein the data encrypting key is encrypted with a key encrypting key, the device further comprising:
means for obtaining a data decrypting key corresponding to the data encrypting key using a key decrypting key corresponding to the key encrypting key;
means for storing the data decrypting key; and wherein said means for accessing comprises:
means for decrypting the protected data portions using the data decrypting key.
39. A device as in any one of claims 33 and 34, wherein said images comprise at least one of text data, numbers, graphics data, and video data.
40. A device as in
claim 31
, further comprising:
tamper detecting mechanism for detecting tampering with said device.
41. A device as in
claim 38
, further comprising:
tamper detecting mechanism for detecting tampering with said device.
42. A device as in
claim 41
, wherein said tamper detection means comprises:
means for destroying data including keys and other cryptographic variables stored in the device when tampering is detected.
43. A device as in any one of claims 33, 34, 35, 36, 37, 39 and 40, wherein said tamper detecting mechanism comprises:
means for destroying data stored in the device when tampering is detected.
44. A device as in any one of claims 36 and 37, wherein the output signal comprises at least one of text, numbers, graphics, audio and video.
45. A device for distributing data for subsequent controlled use of the data by a user, the device comprising:
means for protecting portions of the data;
means for preventing access to the protected portions of the data other than in a non-useable form;
means for determining rules concerning access rights to the data;
means for protecting the rules; and
means providing the protected portions of the data and the protected rules;
whereby a user is provided controlled access to the data only in accordance with the rules as enforced by an access mechanism protected by tamper protection.
46. A device for distributing data for subsequent controlled use of the data by a user, some of said data having access rules already associated therewith, the device comprising:
means for protecting portions of the data;
means for preventing access to the protected portions of the data other than in a non-useable form;
means for determining rules concerning access rights to the data;
means for combining with said determined rules any rules previously associated with the data;
means for protecting the combined rules; and
means for providing the protected portions of the data and the protected combined rules;
whereby the user is provided controlled access to the data only in accordance with the combined rules as enforced by an access mechanism protected by tamper detection.
47. A device as in any one of claims 45 and 46, wherein the means for providing provides the protected portions and the protected rules together as a package.
48. A device as in any one of claims 45 and 46, wherein the means for providing provides the protected portions and the protected rules separately.
49. A device as in any one of claims 45 and 46, wherein
the means for protecting portions of the data comprises means for encrypting the portions of the data, and wherein
the means for preventing access prevents access to the encrypted portions of the data other than in encrypted form.
50. A device as in any one of claims 45 and 46, wherein
the means for protecting the rules comprises means for encrypting the rules.
51. A device as in
claim 50
, wherein
the means for protecting portions of the data comprises means for encrypting the portions of the data, and wherein
the means for preventing access prevents access to the encrypted portions of the data other than in encrypted form.
52. A device as in any one of claims 45 and 46, wherein
the rules are protected such that they can be viewed and they cannot be changed.
53. A device as in
claim 51
, wherein
the means for encrypting the rules comprises means for encrypting the rules with a rule encrypting key,
the means for encrypting the portions of the data comprises means for encrypting the portions of the data with a data encrypting key,
the device further comprising means for encrypting the data encrypting key.
54. A device as in any one of claims 45 and 46, further comprising means for providing unprotected portions of the data.
55. A device as in
claim 47
, further comprising:
means for providing unprotected portions of the data in the package.
56. A device as in any one of claims 45 and 46, further comprising:
means for detecting tampering with the access mechanism; and
means for destroying data stored in the access mechanism when tampering is detected by the tamper detecting means.
57. A device as in any one of claims 30, 31, 33-37, 45 and 46, wherein said rules relate to at least one of:
characteristics of users;
characteristics of protected data; and
environmental characteristics.
58. A device as in any one of claims 30, 31, 33-37, 45 and 46, wherein the data represent at least one of software, text, numbers, graphics, audio, and video.
59. A device as in any one of claims 30, 31, 33-37, 45 and 46, wherein the rules indicate access control rights of the user, the device further comprising:
means for allowing the user to access the data only in accordance with the access control rights indicated in the rules.
60. A device as in
claim 59
, wherein the access control rights include at least one of:
local display rights,
printing rights,
copying rights,
execution rights,
transmission rights, and
modification rights.
61. A device as in any one of claims 30, 31, 33-37, 45 and 46, wherein the rules indicate access control quantities, the device further comprising:
means allowing the user to access the data only in accordance with the access control quantities indicated in the rules.
62. A device as in
claim 61
, wherein the access control quantities include at least one of:
a number of allowed read-accesses to the data;
an allowable size of a read-access to the data;
an expiration date of the data;
an intensity of accesses to the data;
an allowed level of accuracy and fidelity; and
an allowed resolution of access to the data.
63. A process control system comprising a device for controlling access to data, the data comprising protected data portions and rules concerning access rights to the data, the device comprising:
a tamper detecting mechanism;
means for storing the rules; and
means for accessing the protected data portions only in accordance with the rules, whereby output of protected data portions is permitted only in such manner as is permitted by the rules, said accessing being enforced by said tamper detecting mechanism.
64. A general purpose computer system comprising a device for controlling access to data, the data comprising protected data portions and rules concerning access rights to the data, the device comprising:
a tamper detecting mechanism;
storage means for storing the rules; and
means for accessing the protected data portions only in accordance with the rules, whereby user access to the protected data portions is permitted only if the rules indicate that the user is allowed to access the portions of the data, said access being enforced by said tamper detecting mechanism.
65. A computer system as in
claim 64
, wherein said tamper detecting mechanism comprises:
means for destroying data, rules and cryptographic variables stored in the device when tampering is detected.
66. A computer system as in
claim 64
, wherein the protected data portions are encrypted using a data encrypting key and wherein the data encrypting key is encrypted with a key encrypting key, the computer further comprising:
means for obtaining a data decrypting key corresponding to the data encrypting key using a key decrypting key corresponding to the key encrypting key;
means for storing the data decrypting key; and wherein said means for accessing comprises:
means for decrypting the protected data portions using the data decrypting key.
67. A computer system comprising:
an input/output (i/o) system for transferring data to and from all i/o devices, said i/o system being specific to said computer system;
means for protecting portions of the data;
means for determining rules concerning access rights to the data;
means for preventing access to the protected portions of the data other than in a non-useable form; and
means for limiting each and every access to the data only in accordance with the rules as enforced by said i/o system.
68. A system as in
claim 67
, further comprising means for destroying data, including cryptographic variables, stored in the i/o system when tampering is detected.
69. A system as in any one of claims 65 and 67, wherein the data represent at least one of software, text, numbers, graphics, audio, and video.
70. A system as in
claim 67
, wherein
the means for protecting portions of the data comprises means for encrypting the portions of the data, and wherein
the means for preventing access prevents access to the encrypted portions of the data other than in encrypted form.
71. A computer system as in
claim 67
, wherein the rules indicate which users are allowed to access the protected portions of the data, the system further comprising:
means for allowing the user access to a protected portion of the data only if the rules indicate that the user is allowed to access that portion of the data.
72. A computer system as in
claim 67
, wherein the rules indicate distribution rights of the data, the system further comprising:
means for allowing the user to distribute the data only in accordance with the distribution rights indicated in the rules.
73. A system as in
claim 67
, wherein the rules indicate access control rights of the user, the system further comprising:
means for allowing the user to access the data only in accordance with the access control rights indicated in the rules.
74. A system as in
claim 73
, wherein the access control rights include at least one of:
local display rights,
printing rights,
copying rights,
execution rights,
transmission rights, and
modification rights.
75. A system as in
claim 67
, wherein the rules indicate access control quantities, the system further comprising:
means allowing the user to access the data only in accordance with the access control quantities indicated in the rules.
76. A system as in
claim 75
, wherein the access control quantities include at least one of:
a number of allowed read-accesses to the data;
an allowable size of a read-access to the data;
an expiration date of the data;
an intensity of accesses to the data;
an allowed level of accuracy and fidelity; and
an allowed resolution of access to the data.
77. A system as in
claim 70
, wherein said means for encrypting encrypts the portions of the data with a data encrypting key, said data encrypting key having a corresponding data decrypting key, said system further comprising:
means for encrypting the data encrypting key with a key encrypting key.
78. A system as in
claim 77
, further comprising:
means for providing a decrypting key corresponding to said key encrypting key.
79. A system as in
claim 75
, wherein the rules indicate payment requirements, the system further comprising:
means for allowing the user to access the data only if the payment requirements indicated in the rules are satisfied.
80. A system as in any one of claims 63, 64, 66 and 67, wherein said rules relate to at least one of:
characteristics of users;
characteristics of protected data; and
environmental characteristics.
US09178606 1996-01-11 1998-10-26 System for controlling access and distribution of digital property Expired - Lifetime US6314409B2 (en)

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US58449396 true 1996-01-11 1996-01-11
US08968887 US5933498A (en) 1996-01-11 1997-11-05 System for controlling access and distribution of digital property
US09178606 US6314409B2 (en) 1996-01-11 1998-10-26 System for controlling access and distribution of digital property

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US09178606 US6314409B2 (en) 1996-01-11 1998-10-26 System for controlling access and distribution of digital property
US10219665 US20030172034A1 (en) 1996-01-11 2002-08-16 System for controlling access and distribution of digital property
US10219890 US20030163428A1 (en) 1996-01-11 2002-08-16 System for controlling access and distribution of digital property
US11373156 US20060178997A1 (en) 1996-01-11 2006-03-13 Systems and methods for authoring and protecting digital property
US12467172 US20090222673A1 (en) 1996-01-11 2009-05-15 System for controlling access and distribution of digital property
US14148539 US20140123218A1 (en) 1996-01-11 2014-01-06 System for controlling access and distribution of digital property

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US10219890 Abandoned US20030163428A1 (en) 1996-01-11 2002-08-16 System for controlling access and distribution of digital property
US10219665 Abandoned US20030172034A1 (en) 1996-01-11 2002-08-16 System for controlling access and distribution of digital property
US12467172 Abandoned US20090222673A1 (en) 1996-01-11 2009-05-15 System for controlling access and distribution of digital property
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US12467172 Abandoned US20090222673A1 (en) 1996-01-11 2009-05-15 System for controlling access and distribution of digital property
US14148539 Abandoned US20140123218A1 (en) 1996-01-11 2014-01-06 System for controlling access and distribution of digital property

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Cited By (161)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20010023427A1 (en) * 2000-03-15 2001-09-20 Kenichi Tanahashi Content-providing system
US20010029582A1 (en) * 1999-05-17 2001-10-11 Goodman Daniel Isaac Method and system for copy protection of data content
US20020095594A1 (en) * 2001-01-16 2002-07-18 Harris Corporation Secure wireless LAN device including tamper resistant feature and associated method
US20020138726A1 (en) * 2001-03-20 2002-09-26 Sames David L. Method and apparatus for securely and dynamically modifying security policy configurations in a distributed system
US20020157013A1 (en) * 2001-03-05 2002-10-24 Teruo Masaki Copyright licensing process promoting apparatus, copyright licensing process promoting method, copyright licensing process promoting program, and record medium
US20020162013A1 (en) * 2001-04-26 2002-10-31 International Business Machines Corporation Method for adding external security to file system resources through symbolic link references
US20020166052A1 (en) * 2001-05-04 2002-11-07 Microsoft Corporation System and methods for caching in connection with authorization in a computer system
US20030005317A1 (en) * 2001-06-28 2003-01-02 Audebert Yves Louis Gabriel Method and system for generating and verifying a key protection certificate
US20030009672A1 (en) * 1998-06-14 2003-01-09 Goodman Daniel I. Method and system for real-time control of document printing
US20030097583A1 (en) * 2001-11-16 2003-05-22 International Business Machines Corporation Data management system and method
US20030105963A1 (en) * 2001-12-05 2003-06-05 Slick Royce E. Secure printing with authenticated printer key
US20030110126A1 (en) * 2001-12-10 2003-06-12 Dunkeld Bryan C. System & method for unique digital asset identification and transaction management
EP1320015A2 (en) * 2001-12-12 2003-06-18 Pervasive Security Systems Inc. System and method for providing manageability to security information for secured items
EP1320016A2 (en) * 2001-12-12 2003-06-18 Pervasive Security Systems Inc. Dynamic evaluation of access rights
US20030115481A1 (en) * 2001-12-18 2003-06-19 Baird Roger T. Controlling the distribution of information
US20030120603A1 (en) * 2001-12-20 2003-06-26 Fujitsu Limited Access right contradiction detection apparatus and analysis rule creation apparatus
US20030142822A1 (en) * 2002-01-31 2003-07-31 Fujitsu Limited Access control method and storage apparatus
FR2836247A1 (en) * 2002-02-15 2003-08-22 Hewlett Packard Development Co Print management system for production of printed documents with owner's rights management has printer that receives protected document file and in response to authorisation signal for printing at least one printed document
US20030179901A1 (en) * 2001-12-13 2003-09-25 Jun Tian Progressive image quality control using watermarking
US20030208767A1 (en) * 2002-05-03 2003-11-06 Williamson Louis D. Network based digital information and entertainment storage and delivery system
US20030229781A1 (en) * 2002-06-05 2003-12-11 Fox Barbara Lynch Cryptographic audit
US20040010807A1 (en) * 2002-05-03 2004-01-15 Urdang Erik G. Use of multiple embedded messages in program signal streams
US20040015999A1 (en) * 2002-05-03 2004-01-22 Carlucci John B. Program storage, retrieval and management based on segmentation messages
EP1389751A2 (en) * 2002-07-18 2004-02-18 Siemens Aktiengesellschaft Method and system for evaluation of sensitive data
US20040040035A1 (en) * 2002-05-03 2004-02-26 Carlucci John B. Use of messages in or associated with program signal streams by set-top terminals
US20040039932A1 (en) * 2002-08-23 2004-02-26 Gidon Elazar Apparatus, system and method for securing digital documents in a digital appliance
US6732275B1 (en) * 1999-03-23 2004-05-04 Samsung Electronics Co., Ltd. Securing encrypted files in a PC and PC peripheral environment
US20040098602A1 (en) * 2002-11-18 2004-05-20 Microsoft Corporation Prerequisite rights
US6813640B1 (en) * 1998-12-08 2004-11-02 Macrovision Corporation System and method for controlling the editing by user action of digital objects created in a document server application
US20040221165A1 (en) * 2003-02-25 2004-11-04 Thomas Birkhoelzer Method for signing data
US20040243804A1 (en) * 2003-03-11 2004-12-02 Takeshi Tajima Network access control method, information providing apparatus, and certificate issuing apparatus for network access
US20040254883A1 (en) * 2003-04-25 2004-12-16 Apple Computer, Inc. Method and system for submitting media for network-based purchase and distribution
US20050021783A1 (en) * 2001-12-07 2005-01-27 Hidehiro Ishii Information processing apparatus and method
US20050019015A1 (en) * 2003-06-02 2005-01-27 Jonathan Ackley System and method of programmatic window control for consumer video players
US20050020359A1 (en) * 2003-06-02 2005-01-27 Jonathan Ackley System and method of interactive video playback
US20050022226A1 (en) * 2003-06-02 2005-01-27 Jonathan Ackley System and method of video player commerce
US20050022229A1 (en) * 2003-07-25 2005-01-27 Michael Gabriel Content access control
US20050021552A1 (en) * 2003-06-02 2005-01-27 Jonathan Ackley Video playback image processing
US6850914B1 (en) * 1999-11-08 2005-02-01 Matsushita Electric Industrial Co., Ltd. Revocation information updating method, revocation informaton updating apparatus and storage medium
US20050033972A1 (en) * 2003-06-27 2005-02-10 Watson Scott F. Dual virtual machine and trusted platform module architecture for next generation media players
US20050039041A1 (en) * 2001-11-14 2005-02-17 Shaw Mari Myra Access, identity, and ticketing system for providing multiple access methods for smart devices
US20050091597A1 (en) * 2003-10-06 2005-04-28 Jonathan Ackley System and method of playback and feature control for video players
US20050131711A1 (en) * 2002-10-24 2005-06-16 Alexandre Bouriant Progressive licensing of component-based mes software
EP1573567A2 (en) * 2002-11-20 2005-09-14 International Business Machines Corporation Method and apparatus for secure processing of sensitive data
US20050204126A1 (en) * 2003-06-27 2005-09-15 Watson Scott F. Dual virtual machine architecture for media devices
US20050246620A1 (en) * 2004-04-28 2005-11-03 Jun Ebata Information processing apparatus, operation permission generating method, operation permission generation determining method, operation permission generating program product and computer-readable recording medium, and generation permission determining program product and computer-readable recording medium
US20060005017A1 (en) * 2004-06-22 2006-01-05 Black Alistair D Method and apparatus for recognition and real time encryption of sensitive terms in documents
US20060059534A1 (en) * 2004-09-14 2006-03-16 Eduardo Gomez Method for capturing a media segment
US20060090202A1 (en) * 2004-10-27 2006-04-27 Institute For Information Industry Methods and systems for data authorization and mobile devices using the same
US20060116960A1 (en) * 1998-11-09 2006-06-01 Gillin Matthew J Transfer instrument
WO2006061768A1 (en) * 2004-12-06 2006-06-15 Koninklijke Philips Electronics N.V. Method and apparatus for utilizing a broadcast flag
US20060147043A1 (en) * 2002-09-23 2006-07-06 Credant Technologies, Inc. Server, computer memory, and method to support security policy maintenance and distribution
US20060161779A1 (en) * 2005-01-17 2006-07-20 Geoffrey Mohammed A Electronic Certification and Authentication System
US7089173B1 (en) * 2000-04-26 2006-08-08 Altera Corporation Hardware opencore evaluation
US20060190984A1 (en) * 2002-09-23 2006-08-24 Credant Technologies, Inc. Gatekeeper architecture/features to support security policy maintenance and distribution
US20060212705A1 (en) * 2005-03-17 2006-09-21 Interdigital Technology Corporation Wireless communication method and apparatus for generating, watermarking and securely transmitting content
US20060236363A1 (en) * 2002-09-23 2006-10-19 Credant Technologies, Inc. Client architecture for portable device with security policies
US20060242685A1 (en) * 2002-09-23 2006-10-26 Credant Technologies, Inc. System and method for distribution of security policies for mobile devices
US20060279773A1 (en) * 2005-06-10 2006-12-14 Canon Kabushiki Kaisha Information processing apparatus and control method therefor
WO2007028962A1 (en) * 2005-09-08 2007-03-15 Ingenia Holdings (Uk) Limited Copying
US20070083471A1 (en) * 2003-10-15 2007-04-12 Apple Computer, Inc. Techniques and systems for electronic submission of media for network-based distribution
US20070124303A1 (en) * 2005-11-30 2007-05-31 International Business Machines Corporation System and method for managing access to data in a database
US7260555B2 (en) 2001-12-12 2007-08-21 Guardian Data Storage, Llc Method and architecture for providing pervasive security to digital assets
US20070195960A1 (en) * 2002-04-12 2007-08-23 General Dynamics Advanced Information Systems Apparatus and method for encrypting data
US20070266047A1 (en) * 2006-05-15 2007-11-15 Apple Computer, Inc. Submission of metadata content and media content to a media distribution system
US20070266028A1 (en) * 2006-05-15 2007-11-15 Apple Computer, Inc. Processing of metadata content and media content received by a media distribution system
US20080025554A1 (en) * 2006-07-25 2008-01-31 John Landwehr User discernible watermarking
US20080040379A1 (en) * 2006-05-15 2008-02-14 Apple Inc. Media package format for submission to a media distribution system
US7440572B2 (en) * 2001-01-16 2008-10-21 Harris Corportation Secure wireless LAN device and associated methods
US20090083544A1 (en) * 2007-08-23 2009-03-26 Andrew Scholnick Security process for private data storage and sharing
US20090086975A1 (en) * 2007-09-28 2009-04-02 Disney Enterprises, Inc. Flexible format media content and method for providing same
US20090138539A1 (en) * 2007-11-28 2009-05-28 Max Muller Resubmission of Media for Network-Based Distribution
US20090164335A1 (en) * 2000-02-04 2009-06-25 Swapalease, Inc Method, apparatus and program product for facilitating transfer of vehicle leases
US20090199302A1 (en) * 2008-02-06 2009-08-06 International Business Machines Corporation System and Methods for Granular Access Control
US20090276333A1 (en) * 2008-05-05 2009-11-05 Cortes Ricardo D Electronic submission and management of digital products for network-based distribution
US20090276858A1 (en) * 2005-11-02 2009-11-05 Matsushita Electric Industrial Co., Ltd. Information communications apparatus, server, and contents provision method
US20090300718A1 (en) * 2004-07-21 2009-12-03 Beachhead Solutions, Inc. System and method for lost data destruction of electronic data stored on a portable electronic device which communicates with servers that are inside of and outside of a firewall
US20090319805A1 (en) * 2008-06-11 2009-12-24 Microsoft Corporation Techniques for performing symmetric cryptography
US20100050218A1 (en) * 2002-05-03 2010-02-25 Carlucci John B Technique for effectively providing various entertainment services through a communications network
US7681034B1 (en) 2001-12-12 2010-03-16 Chang-Ping Lee Method and apparatus for securing electronic data
US7703140B2 (en) 2003-09-30 2010-04-20 Guardian Data Storage, Llc Method and system for securing digital assets using process-driven security policies
US7707427B1 (en) 2004-07-19 2010-04-27 Michael Frederick Kenrich Multi-level file digests
US20100188712A1 (en) * 2009-01-26 2010-07-29 Kabushiki Kaisha Toshiba Image processing apparatus and image processing method
USRE41546E1 (en) 2001-12-12 2010-08-17 Klimenty Vainstein Method and system for managing security tiers
US7783765B2 (en) 2001-12-12 2010-08-24 Hildebrand Hal S System and method for providing distributed access control to secured documents
US7814009B1 (en) * 1999-05-14 2010-10-12 Frenkel Marvin A Anonymous on-line cash management system
US20100275252A1 (en) * 2009-04-13 2010-10-28 Gyeyeong Technology & Information Co., Ltd. Software management apparatus and method, and user terminal controlled by the apparatus and management method for the same
US7836310B1 (en) 2002-11-01 2010-11-16 Yevgeniy Gutnik Security system that uses indirect password-based encryption
US20110035508A1 (en) * 2009-08-07 2011-02-10 Jason Robert Fosback Automatic transport discovery for media submission
US7890990B1 (en) 2002-12-20 2011-02-15 Klimenty Vainstein Security system with staging capabilities
US7921450B1 (en) 2001-12-12 2011-04-05 Klimenty Vainstein Security system using indirect key generation from access rules and methods therefor
US7921284B1 (en) 2001-12-12 2011-04-05 Gary Mark Kinghorn Method and system for protecting electronic data in enterprise environment
US7921288B1 (en) 2001-12-12 2011-04-05 Hildebrand Hal S System and method for providing different levels of key security for controlling access to secured items
US7930756B1 (en) * 2001-12-12 2011-04-19 Crocker Steven Toye Multi-level cryptographic transformations for securing digital assets
US20110093803A1 (en) * 2001-10-10 2011-04-21 C/O Google Inc. Server Geospatially Organized Flat File Data
US7937582B1 (en) * 2006-06-21 2011-05-03 Google Inc. Secure XML feeds
US7950066B1 (en) 2001-12-21 2011-05-24 Guardian Data Storage, Llc Method and system for restricting use of a clipboard application
WO2011061020A1 (en) * 2009-11-20 2011-05-26 Siemens Aktiengesellschaft Method and device for accessing control data according to provided permission information
US8006280B1 (en) 2001-12-12 2011-08-23 Hildebrand Hal S Security system for generating keys from access rules in a decentralized manner and methods therefor
KR101081729B1 (en) 2003-07-07 2011-11-08 로비 솔루션스 코포레이션 Reprogrammable security for controlling piracy and enabling interactive content
US8065713B1 (en) 2001-12-12 2011-11-22 Klimenty Vainstein System and method for providing multi-location access management to secured items
US20120017091A1 (en) * 2005-04-26 2012-01-19 Verance Corporation Methods and apparatus for thwarting watermark detection circumvention
US8127366B2 (en) 2003-09-30 2012-02-28 Guardian Data Storage, Llc Method and apparatus for transitioning between states of security policies used to secure electronic documents
US8176334B2 (en) 2002-09-30 2012-05-08 Guardian Data Storage, Llc Document security system that permits external users to gain access to secured files
US8266674B2 (en) 2001-12-12 2012-09-11 Guardian Data Storage, Llc Method and system for implementing changes to security policies in a distributed security system
US8307067B2 (en) 2002-09-11 2012-11-06 Guardian Data Storage, Llc Protecting encrypted files transmitted over a network
USRE43906E1 (en) 2001-12-12 2013-01-01 Guardian Data Storage Llc Method and apparatus for securing digital assets
US8346807B1 (en) 2004-12-15 2013-01-01 Nvidia Corporation Method and system for registering and activating content
US8359332B1 (en) 2004-08-02 2013-01-22 Nvidia Corporation Secure content enabled drive digital rights management system and method
US20130061309A1 (en) * 2011-09-06 2013-03-07 Microsoft Corporation Per Process Networking Capabilities
US8402283B1 (en) 2004-08-02 2013-03-19 Nvidia Corporation Secure content enabled drive system and method
USRE44209E1 (en) 1998-06-14 2013-05-07 Alearo Properties Limited Liability Company Method and system for real-time control of document printing
US8451086B2 (en) 2000-02-16 2013-05-28 Verance Corporation Remote control signaling using audio watermarks
US8533481B2 (en) 2011-11-03 2013-09-10 Verance Corporation Extraction of embedded watermarks from a host content based on extrapolation techniques
US20130239166A1 (en) * 2012-03-06 2013-09-12 Microsoft Corporation Operating Large Scale Systems and Cloud Services With Zero-Standing Elevated Permissions
US8543827B2 (en) 2001-12-12 2013-09-24 Intellectual Ventures I Llc Methods and systems for providing access control to secured data
US8549307B2 (en) 2005-07-01 2013-10-01 Verance Corporation Forensic marking using a common customization function
US8566616B1 (en) 2004-09-10 2013-10-22 Altera Corporation Method and apparatus for protecting designs in SRAM-based programmable logic devices and the like
US8613102B2 (en) 2004-03-30 2013-12-17 Intellectual Ventures I Llc Method and system for providing document retention using cryptography
US8612772B1 (en) 2004-09-10 2013-12-17 Altera Corporation Security core using soft key
US8615104B2 (en) 2011-11-03 2013-12-24 Verance Corporation Watermark extraction based on tentative watermarks
US8681978B2 (en) 2008-06-24 2014-03-25 Verance Corporation Efficient and secure forensic marking in compressed domain
US8682026B2 (en) 2011-11-03 2014-03-25 Verance Corporation Efficient extraction of embedded watermarks in the presence of host content distortions
US8699088B2 (en) 2004-03-12 2014-04-15 Ingenia Holdings Limited Methods and apparatuses for creating authenticatable printed articles and subsequently verifying them
US8707034B1 (en) 2003-05-30 2014-04-22 Intellectual Ventures I Llc Method and system for using remote headers to secure electronic files
US8726304B2 (en) 2012-09-13 2014-05-13 Verance Corporation Time varying evaluation of multimedia content
US8745404B2 (en) 1998-05-28 2014-06-03 Verance Corporation Pre-processed information embedding system
US8745403B2 (en) 2011-11-23 2014-06-03 Verance Corporation Enhanced content management based on watermark extraction records
US8751825B1 (en) 2004-12-15 2014-06-10 Nvidia Corporation Content server and method of storing content
US8766800B2 (en) 2004-03-12 2014-07-01 Ingenia Holdings Limited Authenticity verification methods, products, and apparatuses
US8781967B2 (en) 2005-07-07 2014-07-15 Verance Corporation Watermarking in an encrypted domain
US8788425B1 (en) 2004-12-15 2014-07-22 Nvidia Corporation Method and system for accessing content on demand
US8799675B2 (en) 2012-01-05 2014-08-05 House Of Development Llc System and method for electronic certification and authentication of data
US8806517B2 (en) 2002-10-15 2014-08-12 Verance Corporation Media monitoring, management and information system
US8832466B1 (en) * 2006-01-27 2014-09-09 Trustwave Holdings, Inc. Methods for augmentation and interpretation of data objects
US8838978B2 (en) 2010-09-16 2014-09-16 Verance Corporation Content access management using extracted watermark information
US8839257B2 (en) 2011-11-22 2014-09-16 Microsoft Corporation Superseding of recovery actions based on aggregation of requests for automated sequencing and cancellation
US8869222B2 (en) 2012-09-13 2014-10-21 Verance Corporation Second screen content
US8875309B1 (en) 2004-12-15 2014-10-28 Nvidia Corporation Content server and method of providing content therefrom
US8881249B2 (en) 2012-12-12 2014-11-04 Microsoft Corporation Scalable and automated secret management
US8892556B2 (en) 2009-11-10 2014-11-18 Ingenia Holdings Limited Optimisation
US8893299B1 (en) 2005-04-22 2014-11-18 Nvidia Corporation Content keys for authorizing access to content
US8923548B2 (en) 2011-11-03 2014-12-30 Verance Corporation Extraction of embedded watermarks from a host content using a plurality of tentative watermarks
US8935217B2 (en) 2009-09-08 2015-01-13 Apple Inc. Digital asset validation prior to submission for network-based distribution
US8990188B2 (en) 2012-11-30 2015-03-24 Apple Inc. Managed assessment of submitted digital content
US9076176B2 (en) 2008-05-05 2015-07-07 Apple Inc. Electronic submission of application programs for network-based distribution
US9087341B2 (en) 2013-01-11 2015-07-21 Apple Inc. Migration of feedback data to equivalent digital assets
US9106964B2 (en) 2012-09-13 2015-08-11 Verance Corporation Enhanced content distribution using advertisements
US9105009B2 (en) 2011-03-21 2015-08-11 Microsoft Technology Licensing, Llc Email-based automated recovery action in a hosted environment
US9203624B2 (en) 2012-06-04 2015-12-01 Apple Inc. Authentication and notification heuristics
US9208334B2 (en) 2013-10-25 2015-12-08 Verance Corporation Content management using multiple abstraction layers
US9251549B2 (en) 2013-07-23 2016-02-02 Verance Corporation Watermark extractor enhancements based on payload ranking
US9262794B2 (en) 2013-03-14 2016-02-16 Verance Corporation Transactional video marking system
US20160065587A1 (en) * 2010-10-29 2016-03-03 Western Digital Technologies, Inc. Methods and systems for a portable data locker
US9323902B2 (en) 2011-12-13 2016-04-26 Verance Corporation Conditional access using embedded watermarks
US9547753B2 (en) 2011-12-13 2017-01-17 Verance Corporation Coordinated watermarking
US9571606B2 (en) 2012-08-31 2017-02-14 Verance Corporation Social media viewing system
US9582507B2 (en) 2003-04-25 2017-02-28 Apple Inc. Network based purchase and distribution of media
US9596521B2 (en) 2014-03-13 2017-03-14 Verance Corporation Interactive content acquisition using embedded codes
US9762585B2 (en) 2015-03-19 2017-09-12 Microsoft Technology Licensing, Llc Tenant lockbox
US9818249B1 (en) 2002-09-04 2017-11-14 Copilot Ventures Fund Iii Llc Authentication method and system

Families Citing this family (1072)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5553864A (en) 1992-05-22 1996-09-10 Sitrick; David H. User image integration into audiovisual presentation system and methodology
US7509270B1 (en) 1992-12-09 2009-03-24 Discovery Communications, Inc. Electronic Book having electronic commerce features
US7835989B1 (en) * 1992-12-09 2010-11-16 Discovery Communications, Inc. Electronic book alternative delivery systems
US7849393B1 (en) 1992-12-09 2010-12-07 Discovery Communications, Inc. Electronic book connection to world watch live
CA2151456C (en) 1992-12-09 2004-03-02 John S. Hendricks Reprogrammable terminal for suggesting programs offered on a television program delivery system
US8095949B1 (en) 1993-12-02 2012-01-10 Adrea, LLC Electronic book with restricted access features
US7861166B1 (en) 1993-12-02 2010-12-28 Discovery Patent Holding, Llc Resizing document pages to fit available hardware screens
US9053640B1 (en) 1993-12-02 2015-06-09 Adrea, LLC Interactive electronic book
US8073695B1 (en) 1992-12-09 2011-12-06 Adrea, LLC Electronic book with voice emulation features
US7865567B1 (en) 1993-12-02 2011-01-04 Discovery Patent Holdings, Llc Virtual on-demand electronic book
US7859551B2 (en) 1993-10-15 2010-12-28 Bulman Richard L Object customization and presentation system
US7024016B2 (en) * 1996-05-16 2006-04-04 Digimarc Corporation Digital watermarking apparatus and methods
US20070100757A1 (en) * 1999-05-19 2007-05-03 Rhoads Geoffrey B Content Protection Arrangements
JPH08263438A (en) * 1994-11-23 1996-10-11 Xerox Corp Distribution and use control system for digital work, and method for controlling access to digital work
US6963859B2 (en) 1994-11-23 2005-11-08 Contentguard Holdings, Inc. Content rendering repository
US20060271915A1 (en) * 2005-05-24 2006-11-30 Contentguard Holdings, Inc. Usage rights grammar and digital works having usage rights created with the grammar
US7133845B1 (en) * 1995-02-13 2006-11-07 Intertrust Technologies Corp. System and methods for secure transaction management and electronic rights protection
US7095854B1 (en) * 1995-02-13 2006-08-22 Intertrust Technologies Corp. Systems and methods for secure transaction management and electronic rights protection
US6658568B1 (en) * 1995-02-13 2003-12-02 Intertrust Technologies Corporation Trusted infrastructure support system, methods and techniques for secure electronic commerce transaction and rights management
US7133846B1 (en) * 1995-02-13 2006-11-07 Intertrust Technologies Corp. Digital certificate support system, methods and techniques for secure electronic commerce transaction and rights management
CN1912885B (en) 1995-02-13 2010-12-22 英特特拉斯特技术公司 Systems and methods for secure transaction management and electronic rights protection
US6948070B1 (en) * 1995-02-13 2005-09-20 Intertrust Technologies Corporation Systems and methods for secure transaction management and electronic rights protection
US6549942B1 (en) * 1995-05-25 2003-04-15 Audiohighway.Com Enhanced delivery of audio data for portable playback
US20060178997A1 (en) * 1996-01-11 2006-08-10 General Dynamics Advanced Information Systems, Inc. Systems and methods for authoring and protecting digital property
US8103877B2 (en) 2000-12-21 2012-01-24 Digimarc Corporation Content identification and electronic tickets, coupons and credits
CN1146178C (en) * 1996-06-20 2004-04-14 普罗特格里特 诺狄克股份公司 Method and appts. for data processing
US5778070A (en) * 1996-06-28 1998-07-07 Intel Corporation Method and apparatus for protecting flash memory
US5926624A (en) 1996-09-12 1999-07-20 Audible, Inc. Digital information library and delivery system with logic for generating files targeted to the playback device
US7917643B2 (en) 1996-09-12 2011-03-29 Audible, Inc. Digital information library and delivery system
US6098084A (en) * 1996-11-12 2000-08-01 Sun Microsystem, Inc. Method and apparatus for visually indicating status of a dataset when presenting portions of the dataset
US6233684B1 (en) * 1997-02-28 2001-05-15 Contenaguard Holdings, Inc. System for controlling the distribution and use of rendered digital works through watermaking
US6006190A (en) * 1997-04-28 1999-12-21 Tartaroukos Llc Computer implemented method and a computer system for enforcing software licenses
US6208746B1 (en) * 1997-05-09 2001-03-27 Gte Service Corporation Biometric watermarks
JPH1125076A (en) * 1997-06-30 1999-01-29 Fujitsu Ltd Document managing device and document management program storage medium
DE69724947T2 (en) * 1997-07-31 2004-05-19 Siemens Ag Computer system and method for securing a file
US7325077B1 (en) * 1997-08-21 2008-01-29 Beryl Technical Assays Llc Miniclient for internet appliance
EP1010052B1 (en) * 1997-09-02 2003-03-12 Siemens Aktiengesellschaft Method for controlling distribution and use of software products with network-connected computers
US6311278B1 (en) 1998-09-09 2001-10-30 Sanctum Ltd. Method and system for extracting application protocol characteristics
US6199181B1 (en) 1997-09-09 2001-03-06 Perfecto Technologies Ltd. Method and system for maintaining restricted operating environments for application programs or operating systems
US20090043907A1 (en) * 1997-09-11 2009-02-12 Digital Delivery Networks, Inc. Local portal
US6278807B1 (en) 1997-11-13 2001-08-21 Kabushiki Kaisha Toshiba Data recording/reproducing apparatus, data recording/reproducing method applied to the apparatus, and computer program product used in data processing apparatus
JPH11176091A (en) * 1997-12-15 1999-07-02 Hitachi Ltd Digital information input output device, receiving device, recording device, and reproducing device
JPH11205738A (en) 1998-01-09 1999-07-30 Canon Inc Image input device, its method and storage medium
US6144739A (en) * 1998-01-20 2000-11-07 Motorola, Inc. Computer network protection using cryptographic sealing software agents and objects
JPH11224288A (en) * 1998-02-06 1999-08-17 Hitachi Ltd Use condition sale type digital contents sale electronic mall system
JPH11224284A (en) * 1998-02-09 1999-08-17 Fujitsu Ltd Distribution system and device for semiconductor design resources and medium for storing software for distribution device
JP2000059323A (en) * 1998-02-13 2000-02-25 Matsushita Electric Ind Co Ltd Digital av data transmission unit, digital av data reception unit, digital av data transmission/reception system and medium
US6195687B1 (en) * 1998-03-18 2001-02-27 Netschools Corporation Method and apparatus for master-slave control in a educational classroom communication network
WO1999050794A1 (en) * 1998-03-30 1999-10-07 Enix Corporation Information recorder/processor and equipment/system controller both provided with fingerprint sensor
US6738905B1 (en) * 1998-04-15 2004-05-18 Digital Video Express, L.P. Conditional access via secure logging with simplified key management
US6957341B2 (en) * 1998-05-14 2005-10-18 Purdue Research Foundation Method and system for secure computational outsourcing and disguise
US6941463B1 (en) 1998-05-14 2005-09-06 Purdue Research Foundation Secure computational outsourcing techniques
JP3713141B2 (en) * 1998-05-19 2005-11-02 インターナショナル・ビジネス・マシーンズ・コーポレーションInternational Business Maschines Corporation To prevent illegal execution method of program
US6253237B1 (en) * 1998-05-20 2001-06-26 Audible, Inc. Personalized time-shifted programming
JP3835655B2 (en) * 1998-06-09 2006-10-18 ソニー株式会社 Information signal reproducing apparatus, the information signal processing apparatus, an information signal reproducing method and information signal output method
US6256393B1 (en) 1998-06-23 2001-07-03 General Instrument Corporation Authorization and access control of software object residing in set-top terminals
US6535919B1 (en) * 1998-06-29 2003-03-18 Canon Kabushiki Kaisha Verification of image data
JP3975308B2 (en) * 1998-07-15 2007-09-12 ソニー株式会社 Information signal reproducing system, an information signal reading device, the information signal processing apparatus, an information signal reproducing method, the information signal reading method, and an information signal processing method
US6490686B1 (en) * 1998-10-05 2002-12-03 Ati International Srl Method and apparatus for restricting privilege access to distributed content information
WO2000022551A9 (en) * 1998-10-13 2000-08-31 Chris Cheah Method and system for controlled distribution of information over a network
US6327652B1 (en) 1998-10-26 2001-12-04 Microsoft Corporation Loading and identifying a digital rights management operating system
US7139915B2 (en) * 1998-10-26 2006-11-21 Microsoft Corporation Method and apparatus for authenticating an open system application to a portable IC device
US6820063B1 (en) * 1998-10-26 2004-11-16 Microsoft Corporation Controlling access to content based on certificates and access predicates
US6330670B1 (en) 1998-10-26 2001-12-11 Microsoft Corporation Digital rights management operating system
US7194092B1 (en) 1998-10-26 2007-03-20 Microsoft Corporation Key-based secure storage
US6609199B1 (en) 1998-10-26 2003-08-19 Microsoft Corporation Method and apparatus for authenticating an open system application to a portable IC device
US6853463B2 (en) * 1998-11-30 2005-02-08 Canon Kabushiki Kaisha Image forming apparatus for permitting image formation in accordance with image attribute, and control method therefor
US6996840B1 (en) * 1998-12-18 2006-02-07 Myspace Ab Method for executing a security critical activity
CA2256936C (en) * 1998-12-23 2002-04-02 Hamid Bacha System for electronic repository of data enforcing access control on data search and retrieval
US7624046B2 (en) * 1998-12-24 2009-11-24 Universal Music Group, Inc. Electronic music/media distribution system
US7209892B1 (en) 1998-12-24 2007-04-24 Universal Music Group, Inc. Electronic music/media distribution system
US8175977B2 (en) 1998-12-28 2012-05-08 Audible License management for digital content
CN1218239C (en) * 1999-02-09 2005-09-07 Lg电子株式会社 Digital data file scrambler and its method
KR100332763B1 (en) * 1999-02-10 2002-04-17 구자홍 Copy protection apparatus and method for digital data player
US6470451B1 (en) * 1999-02-25 2002-10-22 International Computers Limited Cancellation method for an automatic ticket system
US6145035A (en) * 1999-02-25 2000-11-07 Dallas Semiconductor Corporation Card cradle system and method
EP1041573B1 (en) * 1999-03-03 2010-01-06 Sony Corporation Reproducing apparatus and reproducing method
US7305562B1 (en) 1999-03-09 2007-12-04 Citibank, N.A. System, method and computer program product for an authentication management infrastructure
FR2790844B1 (en) * 1999-03-09 2001-05-25 Gemplus Card Int Method and process of the monitoring device of a program, program device for monitoring the program
WO2001065375A1 (en) * 2000-03-01 2001-09-07 Bionetrix Systems Corporation System, method and computer program product for an authentication management infrastructure
US7174457B1 (en) 1999-03-10 2007-02-06 Microsoft Corporation System and method for authenticating an operating system to a central processing unit, providing the CPU/OS with secure storage, and authenticating the CPU/OS to a third party
US7353199B1 (en) * 1999-03-22 2008-04-01 Perfect Web Technologies, Inc. Method of moderating external access to an electronic document authoring development and distribution system
US7162452B1 (en) * 1999-03-25 2007-01-09 Epstein Michael A Key distribution via a memory device
JP4779183B2 (en) 1999-03-26 2011-09-28 ソニー株式会社 Playback apparatus and method
US7383205B1 (en) 1999-03-27 2008-06-03 Microsoft Corporation Structure of a digital content package
US7319759B1 (en) 1999-03-27 2008-01-15 Microsoft Corporation Producing a new black box for a digital rights management (DRM) system
US7103574B1 (en) 1999-03-27 2006-09-05 Microsoft Corporation Enforcement architecture and method for digital rights management
US7024393B1 (en) 1999-03-27 2006-04-04 Microsoft Corporation Structural of digital rights management (DRM) system
US6973444B1 (en) * 1999-03-27 2005-12-06 Microsoft Corporation Method for interdependently validating a digital content package and a corresponding digital license
US7136838B1 (en) 1999-03-27 2006-11-14 Microsoft Corporation Digital license and method for obtaining/providing a digital license
US6829708B1 (en) 1999-03-27 2004-12-07 Microsoft Corporation Specifying security for an element by assigning a scaled value representative of the relative security thereof
US7073063B2 (en) 1999-03-27 2006-07-04 Microsoft Corporation Binding a digital license to a portable device or the like in a digital rights management (DRM) system and checking out/checking in the digital license to/from the portable device or the like
US6721891B1 (en) 1999-03-29 2004-04-13 Activcard Ireland Limited Method of distributing piracy protected computer software
US6363434B1 (en) 1999-03-30 2002-03-26 Sony Corporation Of Japan Method of managing resources within a network of consumer electronic devices
US6820204B1 (en) 1999-03-31 2004-11-16 Nimesh Desai System and method for selective information exchange
US20050192008A1 (en) * 1999-03-31 2005-09-01 Nimesh Desai System and method for selective information exchange
US6651171B1 (en) * 1999-04-06 2003-11-18 Microsoft Corporation Secure execution of program code
FR2792141B1 (en) * 1999-04-09 2001-06-15 Bull Cp8 Method for securing one or more electronic sets using a same cryptographic algorithm with secret key, use of the method and the electronic assembly
WO2000064095A1 (en) * 1999-04-15 2000-10-26 Motorola Inc. Electronic document protection system
US6665799B1 (en) * 1999-04-28 2003-12-16 Dvi Acquisition Corp. Method and computer software code for providing security for a computer software program
US6697948B1 (en) * 1999-05-05 2004-02-24 Michael O. Rabin Methods and apparatus for protecting information
US6615191B1 (en) * 1999-05-11 2003-09-02 E. Addison Seeley Software licensing and distribution systems and methods employing biometric sample authentication
CA2388385A1 (en) * 1999-05-15 2000-11-23 John W.L. Ogilvie Automatic broker tools and techniques
US6289450B1 (en) * 1999-05-28 2001-09-11 Authentica, Inc. Information security architecture for encrypting documents for remote access while maintaining access control
US7143445B1 (en) * 1999-05-31 2006-11-28 Sony Corporation Information processing apparatus, information processing method, and program storage medium
US6971022B1 (en) * 1999-06-15 2005-11-29 Matsushita Electric Industrial Co., Ltd. Cryptographic apparatus for performing cryptography on a specified area of content data
US6580683B1 (en) * 1999-06-23 2003-06-17 Dataplay, Inc. Optical recording medium having a master data area and a writeable data area
EP1238347A2 (en) * 1999-06-30 2002-09-11 Stephen Billester Secure, limited-access database system and method
JP4829448B2 (en) 1999-07-14 2011-12-07 トムソン ライセンシングThomson Licensing The methods and apparatus using a single password set in the integrated tv system
US7430670B1 (en) * 1999-07-29 2008-09-30 Intertrust Technologies Corp. Software self-defense systems and methods
US7096282B1 (en) * 1999-07-30 2006-08-22 Smiths Medical Pm, Inc. Memory option card having predetermined number of activation/deactivation codes for selectively activating and deactivating option functions for a medical device
EP1203278B1 (en) 1999-08-13 2012-02-08 Hewlett-Packard Development Company, L.P. Enforcing restrictions on the use of stored data
EP1076279A1 (en) 1999-08-13 2001-02-14 Hewlett-Packard Company Computer platforms and their methods of operation
WO2001016775A1 (en) * 1999-08-27 2001-03-08 Comnex Co., Ltd. Method for providing literary work data, system for executing the method, and computer-readable recorded medium
US7287166B1 (en) 1999-09-03 2007-10-23 Purdue Research Foundation Guards for application in software tamperproofing
US7757097B2 (en) * 1999-09-03 2010-07-13 Purdue Research Foundation Method and system for tamperproofing software
US7391865B2 (en) 1999-09-20 2008-06-24 Security First Corporation Secure data parser method and system
WO2001022319A1 (en) 1999-09-20 2001-03-29 Ethentica, Inc. Trust arbitrage in cryptographic authentication
US8738471B2 (en) * 1999-09-22 2014-05-27 Scott C. Harris Enhancing touch and feel on the internet
US7111252B1 (en) * 1999-09-22 2006-09-19 Harris Scott C Enhancing touch and feel on the internet
US7617135B2 (en) * 2000-02-16 2009-11-10 Illinois Computer Research, Llc Enhancing touch and feel on the internet
US7634455B1 (en) * 1999-09-23 2009-12-15 Agile Software Corporation Method and apparatus for providing controlled access to software objects and associated documents
GB9922665D0 (en) * 1999-09-25 1999-11-24 Hewlett Packard Co A method of enforcing trusted functionality in a full function platform
WO2001025937A1 (en) * 1999-10-01 2001-04-12 Infraworks Corporation Network/tdi blocking method and system
US6862583B1 (en) 1999-10-04 2005-03-01 Canon Kabushiki Kaisha Authenticated secure printing
US7003667B1 (en) 1999-10-04 2006-02-21 Canon Kabushiki Kaisha Targeted secure printing
US8311946B1 (en) * 1999-10-15 2012-11-13 Ebrary Method and apparatus for improved information transactions
US7536561B2 (en) 1999-10-15 2009-05-19 Ebrary, Inc. Method and apparatus for improved information transactions
US6931532B1 (en) * 1999-10-21 2005-08-16 International Business Machines Corporation Selective data encryption using style sheet processing
US6961849B1 (en) * 1999-10-21 2005-11-01 International Business Machines Corporation Selective data encryption using style sheet processing for decryption by a group clerk
US6941459B1 (en) * 1999-10-21 2005-09-06 International Business Machines Corporation Selective data encryption using style sheet processing for decryption by a key recovery agent
US6978367B1 (en) * 1999-10-21 2005-12-20 International Business Machines Corporation Selective data encryption using style sheet processing for decryption by a client proxy
US6836846B1 (en) * 1999-10-21 2004-12-28 International Business Machines Corporation Method and apparatus for controlling e-mail access
JP2001188738A (en) * 1999-10-21 2001-07-10 Sony Corp System and method for providing information and device for adding identification information and computer readable recording medium stored with the same program and information providing server device and computer readable recording medium stored with the same program and information terminal and computer readable recording medium with information using program and charging device
GB9925227D0 (en) * 1999-10-25 1999-12-22 Internet Limited Data storage retrieval and access system
US6928551B1 (en) * 1999-10-29 2005-08-09 Lockheed Martin Corporation Method and apparatus for selectively denying access to encoded data
KR20050109620A (en) * 1999-11-05 2005-11-21 소니 가부시끼 가이샤 Data decoding apparatus and method, charge information processing apparatus and method, data reproducing apparatus and method, electronic money, electronic use right, and terminal apparatus
DE69929416T2 (en) * 1999-11-06 2006-09-14 Swisscom Fixnet Ag Methods and suitable for remote services server
US7178031B1 (en) * 1999-11-08 2007-02-13 International Business Machines Corporation Wireless security access management for a portable data storage cartridge
US6449719B1 (en) * 1999-11-09 2002-09-10 Widevine Technologies, Inc. Process and streaming server for encrypting a data stream
US8055894B2 (en) * 1999-11-09 2011-11-08 Google Inc. Process and streaming server for encrypting a data stream with bandwidth based variation
US7299292B2 (en) * 2002-03-29 2007-11-20 Widevine Technologies, Inc. Process and streaming server for encrypting a data stream to a virtual smart card client system
US20050246377A1 (en) * 1999-11-12 2005-11-03 Faso Paul L Method and apparatus for a commercial computer network system designed to modify digital music files
US6754908B1 (en) 1999-11-12 2004-06-22 General Instrument Corporation Intrusion detection for object security
US6763465B1 (en) * 1999-11-23 2004-07-13 International Business Machines Corporation Method of ensuring that the PC is not used to make unauthorized and surreptitious telephone calls
JP2001222525A (en) * 1999-11-30 2001-08-17 Canon Inc Device, system and method for managing document and storage medium
US6687710B1 (en) 1999-12-03 2004-02-03 Synchronicity Software, Inc. Intellectual property library management system
WO2001041018A3 (en) * 1999-12-03 2002-07-11 Ibooks Com System and method for evaluating and purchasing digital content
CN100471108C (en) * 1999-12-06 2009-03-18 三洋电机株式会社;富士通株式会社;株式会社日立制作所 Data distribution system and recorder for use therein
US6757824B1 (en) 1999-12-10 2004-06-29 Microsoft Corporation Client-side boot domains and boot rules
US7047411B1 (en) 1999-12-17 2006-05-16 Microsoft Corporation Server for an electronic distribution system and method of operating same
US6996720B1 (en) * 1999-12-17 2006-02-07 Microsoft Corporation System and method for accessing protected content in a rights-management architecture
US6970849B1 (en) 1999-12-17 2005-11-29 Microsoft Corporation Inter-server communication using request with encrypted parameter
US6742039B1 (en) * 1999-12-20 2004-05-25 Intel Corporation System and method for connecting to a device on a protected network
US6775657B1 (en) * 1999-12-22 2004-08-10 Cisco Technology, Inc. Multilayered intrusion detection system and method
US7069234B1 (en) 1999-12-22 2006-06-27 Accenture Llp Initiating an agreement in an e-commerce environment
US6629081B1 (en) 1999-12-22 2003-09-30 Accenture Llp Account settlement and financing in an e-commerce environment
US20010032189A1 (en) * 1999-12-27 2001-10-18 Powell Michael D. Method and apparatus for a cryptographically assisted commercial network system designed to facilitate idea submission, purchase and licensing and innovation transfer
US7647278B1 (en) 1999-12-29 2010-01-12 Pitney Bowes Inc. Method for facilitating a transaction between a merchant and a buyer
CA2395719A1 (en) * 1999-12-29 2001-07-05 Pitney Bowes Inc. Method and system for selling a digital content product in an online commercial transaction
WO2001050290A1 (en) * 1999-12-30 2001-07-12 Sony Electronics, Inc. A resource manager for providing user-dependent access control
US20010032144A1 (en) * 2000-01-11 2001-10-18 Thomas Magid Method for the transfer of technology using a web-based technology management system
US6772340B1 (en) 2000-01-14 2004-08-03 Microsoft Corporation Digital rights management system operating on computing device and having black box tied to computing device
US7353209B1 (en) 2000-01-14 2008-04-01 Microsoft Corporation Releasing decrypted digital content to an authenticated path
US20010009007A1 (en) * 2000-01-18 2001-07-19 Takeshi Miyamae Information processing apparatus and storage medium
US6912528B2 (en) 2000-01-18 2005-06-28 Gregg S. Homer Rechargeable media distribution and play system
US6871287B1 (en) 2000-01-21 2005-03-22 John F. Ellingson System and method for verification of identity
US6647126B1 (en) * 2000-01-28 2003-11-11 Eastman Kodak Company Authorizing the production of visual images from digital images
JP2001218011A (en) * 2000-01-31 2001-08-10 Canon Inc Picture processor, picture processing method and storage medium
US6754784B1 (en) 2000-02-01 2004-06-22 Cirrus Logic, Inc. Methods and circuits for securing encached information
JP4491893B2 (en) * 2000-02-03 2010-06-30 ソニー株式会社 Information transmission apparatus, the information terminal apparatus and an information providing method
GB2359156B (en) * 2000-02-14 2004-10-13 Reuters Ltd Methods of computer programs for and apparatus for providing and accessing digital content
US20010049648A1 (en) * 2000-02-15 2001-12-06 Richard Naylor Electronic marketplace for auctioning non-exclusive rights in intangible property
US6801816B2 (en) * 2000-02-28 2004-10-05 International Flavors & Fragrances Inc. Customer controlled manufacturing process and user interface
JP2001318768A (en) * 2000-03-02 2001-11-16 Sony Computer Entertainment Inc Entertainment device, component therefor, method for loading digital information with entertainment device and computer program
DE60136616D1 (en) 2000-03-03 2009-01-02 Ibm System for determination of weakening of web applications
US20010032312A1 (en) * 2000-03-06 2001-10-18 Davor Runje System and method for secure electronic digital rights management, secure transaction management and content distribution
WO2001067361A1 (en) * 2000-03-09 2001-09-13 Smart Research Technologies, Inc. Distribution of printed information from electronic database
US8635160B2 (en) * 2000-03-14 2014-01-21 Sony Corporation Information providing apparatus and method, information processing apparatus and method, program storage medium, program, and information providing system
EP1134643A3 (en) * 2000-03-14 2007-01-17 Sony Corporation Information providing apparatus and method, information processing apparatus and method, program storage medium, program, and information providing system
JP3281920B2 (en) * 2000-03-14 2002-05-13 東北大学長 Method for producing ant Refrain compound
US8180844B1 (en) 2000-03-18 2012-05-15 Digimarc Corporation System for linking from objects to remote resources
US7206820B1 (en) * 2000-03-18 2007-04-17 Digimarc Corporation System for linking from object to remote resource
US7441263B1 (en) 2000-03-23 2008-10-21 Citibank, N.A. System, method and computer program product for providing unified authentication services for online applications
US7080257B1 (en) * 2000-03-27 2006-07-18 Microsoft Corporation Protecting digital goods using oblivious checking
US7054443B1 (en) * 2000-03-27 2006-05-30 Microsoft Corporation System and method for protecting digital goods using random and automatic code obfuscation
US7194634B2 (en) * 2000-03-31 2007-03-20 Intel Corporation Attestation key memory device and bus
US6754815B1 (en) * 2000-03-31 2004-06-22 Intel Corporation Method and system for scrubbing an isolated area of memory after reset of a processor operating in isolated execution mode if a cleanup flag is set
US6769058B1 (en) 2000-03-31 2004-07-27 Intel Corporation Resetting a processor in an isolated execution environment
US6760441B1 (en) 2000-03-31 2004-07-06 Intel Corporation Generating a key hieararchy for use in an isolated execution environment
US7013481B1 (en) 2000-03-31 2006-03-14 Intel Corporation Attestation key memory device and bus
US7073071B1 (en) 2000-03-31 2006-07-04 Intel Corporation Platform and method for generating and utilizing a protected audit log
US7200230B2 (en) 2000-04-06 2007-04-03 Macrovision Corporation System and method for controlling and enforcing access rights to encrypted media
US20020073033A1 (en) * 2000-04-07 2002-06-13 Sherr Scott Jeffrey Online digital video signal transfer apparatus and method
US7024466B2 (en) * 2000-04-07 2006-04-04 Movielink, Llc Network configured for delivery of content for download to a recipient
US20020154157A1 (en) * 2000-04-07 2002-10-24 Sherr Scott Jeffrey Website system and process for selection and delivery of electronic information on a network
US7155415B2 (en) 2000-04-07 2006-12-26 Movielink Llc Secure digital content licensing system and method
CA2405489C (en) * 2000-04-07 2012-07-03 Movielink, Llc Secure digital content licensing system and method
US20020032905A1 (en) * 2000-04-07 2002-03-14 Sherr Scott Jeffrey Online digital video signal transfer apparatus and method
JP4708591B2 (en) * 2000-04-14 2011-06-22 キヤノン株式会社 Information processing system, an information processing apparatus, information processing method, and program
US7043447B2 (en) * 2000-04-19 2006-05-09 Sony Corporation Method for facilitating a transaction for purchasable content over an electronic network
US7526450B2 (en) * 2000-04-19 2009-04-28 Sony Corporation Interface for presenting downloadable digital data content format options
US20040088560A1 (en) * 2000-04-20 2004-05-06 Danks David Hilton Secure system access
JP3775168B2 (en) 2000-04-20 2006-05-17 株式会社日立製作所 Transmitter and receiver
US6615186B1 (en) * 2000-04-24 2003-09-02 Usa Technologies, Inc. Communicating interactive digital content between vehicles and internet based data processing resources for the purpose of transacting e-commerce or conducting e-business
US6856820B1 (en) 2000-04-24 2005-02-15 Usa Technologies, Inc. In-vehicle device for wirelessly connecting a vehicle to the internet and for transacting e-commerce and e-business
US6895310B1 (en) 2000-04-24 2005-05-17 Usa Technologies, Inc. Vehicle related wireless scientific instrumentation telematics
US6853894B1 (en) 2000-04-24 2005-02-08 Usa Technologies, Inc. Global network based vehicle safety and security telematics
US7003289B1 (en) 2000-04-24 2006-02-21 Usa Technologies, Inc. Communication interface device for managing wireless data transmission between a vehicle and the internet
US7502672B1 (en) 2000-04-24 2009-03-10 Usa Technologies, Inc. Wireless vehicle diagnostics with service and part determination capabilities
US7237114B1 (en) 2000-04-26 2007-06-26 Pronvest, Inc. Method and system for signing and authenticating electronic documents
US6386894B2 (en) * 2000-04-28 2002-05-14 Texas Instruments Incorporated Versatile interconnection scheme for beverage quality and control sensors
US7076468B2 (en) * 2000-04-28 2006-07-11 Hillegass James C Method and system for licensing digital works
JP2004514194A (en) * 2000-04-28 2004-05-13 モルドフロウ コーポレイション Network enabled application software system and method
US7020781B1 (en) * 2000-05-03 2006-03-28 Hewlett-Packard Development Company, L.P. Digital content distribution systems
US6662181B1 (en) * 2000-05-08 2003-12-09 International Business Machines Corporation Mechanism for selection using access control structures for authoring systems
US6839878B1 (en) * 2000-05-08 2005-01-04 International Business Machines Corporation Mechanism for displaying content using control structure for authoring systems
US6816906B1 (en) * 2000-05-08 2004-11-09 International Business Machines Corporation Mechanism for building access control structures for authoring systems
US20050132233A1 (en) * 2000-05-10 2005-06-16 Cisco Technology, Inc. Digital rights framework
US6728773B1 (en) * 2000-05-10 2004-04-27 Cisco Technology Inc. System for controlling and regulating distribution of intellectual properties using internet protocol framework
US6721793B1 (en) * 2000-05-10 2004-04-13 Cisco Technology, Inc. Intellectual property over non-internet protocol systems and networks
US6578436B1 (en) 2000-05-16 2003-06-17 Fidelica Microsystems, Inc. Method and apparatus for pressure sensing
US7316167B2 (en) 2000-05-16 2008-01-08 Fidelica, Microsystems, Inc. Method and apparatus for protection of contour sensing devices
US6918039B1 (en) * 2000-05-18 2005-07-12 International Business Machines Corporation Method and an apparatus for detecting a need for security and invoking a secured presentation of data
US7269160B1 (en) 2000-05-26 2007-09-11 Buffalo International, Inc. Voice over internet call center integration
US20020003884A1 (en) * 2000-05-26 2002-01-10 Sprunk Eric J. Authentication and/or authorization launch
US7284124B1 (en) * 2000-06-05 2007-10-16 Microsoft Corporation Trust level based platform access regulation application
US7716163B2 (en) 2000-06-06 2010-05-11 Microsoft Corporation Method and system for defining semantic categories and actions
US7421645B2 (en) 2000-06-06 2008-09-02 Microsoft Corporation Method and system for providing electronic commerce actions based on semantically labeled strings
US7788602B2 (en) 2000-06-06 2010-08-31 Microsoft Corporation Method and system for providing restricted actions for recognized semantic categories
US7712024B2 (en) 2000-06-06 2010-05-04 Microsoft Corporation Application program interfaces for semantically labeling strings and providing actions based on semantically labeled strings
US7770102B1 (en) 2000-06-06 2010-08-03 Microsoft Corporation Method and system for semantically labeling strings and providing actions based on semantically labeled strings
WO2001095222A1 (en) * 2000-06-07 2001-12-13 Powers Arthur C Method of direct communication between a business and its customers
US20030187739A1 (en) * 2001-06-07 2003-10-02 Powers Arthur C. System and method of providing an interface to the internet
US6947977B1 (en) * 2000-06-09 2005-09-20 Metadigm Llc Scalable transaction system for a network environment
US20050149759A1 (en) * 2000-06-15 2005-07-07 Movemoney, Inc. User/product authentication and piracy management system
US20040073617A1 (en) 2000-06-19 2004-04-15 Milliken Walter Clark Hash-based systems and methods for detecting and preventing transmission of unwanted e-mail
WO2001098877A3 (en) * 2000-06-19 2003-05-15 James R Clark Copy-protected internet distribution system
EP1205855A3 (en) * 2000-11-10 2006-01-25 Masae Yanagi Data managing method, data managing system, data managing apparatus, data handling apparatus, computer program, and recording medium
JP2002007733A (en) * 2000-06-19 2002-01-11 Yamaha Corp Method and device for releasing contents function regulation, and recording medium
US6981262B1 (en) 2000-06-27 2005-12-27 Microsoft Corporation System and method for client interaction in a multi-level rights-management architecture
US7017189B1 (en) * 2000-06-27 2006-03-21 Microsoft Corporation System and method for activating a rendering device in a multi-level rights-management architecture
US7539875B1 (en) 2000-06-27 2009-05-26 Microsoft Corporation Secure repository with layers of tamper resistance and system and method for providing same
US7051200B1 (en) 2000-06-27 2006-05-23 Microsoft Corporation System and method for interfacing a software process to secure repositories
US6891953B1 (en) * 2000-06-27 2005-05-10 Microsoft Corporation Method and system for binding enhanced software features to a persona
US7158953B1 (en) 2000-06-27 2007-01-02 Microsoft Corporation Method and system for limiting the use of user-specific software features
US7171692B1 (en) 2000-06-27 2007-01-30 Microsoft Corporation Asynchronous communication within a server arrangement
CN1471661A (en) * 2000-06-29 2004-01-28 皇家菲利浦电子有限公司 Multiple encryption of a single document providing multiple level access privileges
WO2002001790A1 (en) * 2000-06-29 2002-01-03 Matsushita Electric Industrial Co., Ltd. Copyright protective device and method
US6589626B2 (en) 2000-06-30 2003-07-08 Verification Technologies, Inc. Copy-protected optical media and method of manufacture thereof
US20020046045A1 (en) * 2000-06-30 2002-04-18 Attila Narin Architecture for an electronic shopping service integratable with a software application
US7225159B2 (en) * 2000-06-30 2007-05-29 Microsoft Corporation Method for authenticating and securing integrated bookstore entries
US7660415B2 (en) 2000-08-03 2010-02-09 Selinfreund Richard H Method and apparatus for controlling access to storage media
US20020002541A1 (en) * 2000-06-30 2002-01-03 Williams Eddie H. Online digital content library
US20050063256A1 (en) * 2000-06-30 2005-03-24 Selinfreund Richard H. Data storage in optical discs
US6638593B2 (en) 2000-06-30 2003-10-28 Verification Technologies, Inc. Copy-protected optical media and method of manufacture thereof
US6535871B1 (en) * 2000-07-24 2003-03-18 Pitney Bowes Inc. Method for searching a digital rights management package
US20020032734A1 (en) * 2000-07-26 2002-03-14 Rhoads Geoffrey B. Collateral data combined with user characteristics to select web site
US6618717B1 (en) * 2000-07-31 2003-09-09 Eliyon Technologies Corporation Computer method and apparatus for determining content owner of a website
US20070027672A1 (en) * 2000-07-31 2007-02-01 Michel Decary Computer method and apparatus for extracting data from web pages
US6826546B1 (en) * 2000-08-17 2004-11-30 Ideaflood, Inc. Method and system for licensing a copy of a copyright protected work
GB0020441D0 (en) * 2000-08-18 2000-10-04 Hewlett Packard Co Performance of a service on a computing platform
US7010808B1 (en) 2000-08-25 2006-03-07 Microsoft Corporation Binding digital content to a portable storage device or the like in a digital rights management (DRM) system
US7743259B2 (en) * 2000-08-28 2010-06-22 Contentguard Holdings, Inc. System and method for digital rights management using a standard rendering engine
US7913095B2 (en) 2000-08-28 2011-03-22 Contentguard Holdings, Inc. Method and apparatus for providing a specific user interface in a system for managing content
WO2002019075A3 (en) * 2000-08-30 2003-04-17 Spectros Corp System and method for client document certification and validation by remote host
US6857067B2 (en) * 2000-09-01 2005-02-15 Martin S. Edelman System and method for preventing unauthorized access to electronic data
US7165175B1 (en) * 2000-09-06 2007-01-16 Widevine Technologies, Inc. Apparatus, system and method for selectively encrypting different portions of data sent over a network
US6993131B1 (en) * 2000-09-12 2006-01-31 Nokia Corporation Method and system for managing rights in digital information over a network
US7194759B1 (en) 2000-09-15 2007-03-20 International Business Machines Corporation Used trusted co-servers to enhance security of web interaction
US6742028B1 (en) 2000-09-15 2004-05-25 Frank Wang Content management and sharing
US6768942B1 (en) * 2000-09-18 2004-07-27 Navigation Technologies Corp. Navigation system with decryption functions and secure geographic database
US6978021B1 (en) * 2000-09-18 2005-12-20 Navteq North America, Llc Encryption method for distribution of data
US7613917B1 (en) * 2000-09-18 2009-11-03 Navteq North America, Llc Method and system for mass distribution of geographic data for navigation systems
US6799302B1 (en) * 2000-09-19 2004-09-28 Adobe Systems Incorporated Low-fidelity document rendering
US7958213B1 (en) 2000-09-21 2011-06-07 Siemens Enterprise Communications, Inc. Processing electronic messages
US7237123B2 (en) 2000-09-22 2007-06-26 Ecd Systems, Inc. Systems and methods for preventing unauthorized use of digital content
US7039615B1 (en) 2000-09-28 2006-05-02 Microsoft Corporation Retail transactions involving digital content in a digital rights management (DRM) system
US7793111B1 (en) 2000-09-28 2010-09-07 Intel Corporation Mechanism to handle events in a machine with isolated execution
US7149722B1 (en) 2000-09-28 2006-12-12 Microsoft Corporation Retail transactions involving distributed and super-distributed digital content in a digital rights management (DRM) system
JP2002109103A (en) * 2000-09-29 2002-04-12 Toshiba Corp System and method for distributing contents
JP2002117376A (en) * 2000-10-04 2002-04-19 Fujitsu Ltd Copyright information inquiry device
US6974081B1 (en) * 2000-10-06 2005-12-13 International Business Machines Corporation Smart book
US7177426B1 (en) * 2000-10-11 2007-02-13 Digital Authentication Technologies, Inc. Electronic file protection using location
GB2383454B (en) * 2000-10-13 2005-03-30 Nds Ltd Automated multi-level marketing system
US7373391B2 (en) * 2000-10-24 2008-05-13 Seiko Epson Corporation System and method for digital content distribution
WO2002046867A3 (en) 2000-11-01 2002-08-29 Flexiworld Technologies Inc Controller and manager for device-to-device pervasive digital output
EP1362313A2 (en) * 2000-11-01 2003-11-19 SAP Aktiengesellschaft Method and system for intellectual property management
US7343324B2 (en) 2000-11-03 2008-03-11 Contentguard Holdings Inc. Method, system, and computer readable medium for automatically publishing content
US6889209B1 (en) * 2000-11-03 2005-05-03 Shieldip, Inc. Method and apparatus for protecting information and privacy
WO2002039224A3 (en) * 2000-11-07 2002-08-22 Aspsecure Corp Methods for distributed trust environment
WO2002039225A3 (en) * 2000-11-07 2002-11-21 Aspsecure Corp Methods for rule driven requirements process for rights enabled systems
US20040030653A1 (en) * 2001-11-08 2004-02-12 Maren Christensen Intellectual property rights management system
US20020116395A1 (en) * 2000-11-10 2002-08-22 Maren Christensen Intellectual property rights management system
US7546334B2 (en) 2000-11-13 2009-06-09 Digital Doors, Inc. Data security system and method with adaptive filter
US7349987B2 (en) 2000-11-13 2008-03-25 Digital Doors, Inc. Data security system and method with parsing and dispersion techniques
US8677505B2 (en) * 2000-11-13 2014-03-18 Digital Doors, Inc. Security system with extraction, reconstruction and secure recovery and storage of data
US7669051B2 (en) * 2000-11-13 2010-02-23 DigitalDoors, Inc. Data security system and method with multiple independent levels of security
US7140044B2 (en) * 2000-11-13 2006-11-21 Digital Doors, Inc. Data security system and method for separation of user communities
US8176563B2 (en) * 2000-11-13 2012-05-08 DigitalDoors, Inc. Data security system and method with editor
US7322047B2 (en) 2000-11-13 2008-01-22 Digital Doors, Inc. Data security system and method associated with data mining
US7146644B2 (en) * 2000-11-13 2006-12-05 Digital Doors, Inc. Data security system and method responsive to electronic attacks
US7313825B2 (en) * 2000-11-13 2007-12-25 Digital Doors, Inc. Data security system and method for portable device
US7103915B2 (en) * 2000-11-13 2006-09-05 Digital Doors, Inc. Data security system and method
US7191252B2 (en) * 2000-11-13 2007-03-13 Digital Doors, Inc. Data security system and method adjunct to e-mail, browser or telecom program
US9311499B2 (en) * 2000-11-13 2016-04-12 Ron M. Redlich Data security system and with territorial, geographic and triggering event protocol
US8479189B2 (en) 2000-11-17 2013-07-02 Hewlett-Packard Development Company, L.P. Pattern detection preprocessor in an electronic device update generation system
US20020062398A1 (en) 2000-11-20 2002-05-23 William Ho Chang Controller for mobile and pervasive output
FI113898B (en) * 2000-11-21 2004-06-30 Nokia Corp Process for the production of the contents of the wireless communication device
US7043473B1 (en) 2000-11-22 2006-05-09 Widevine Technologies, Inc. Media tracking system and method
US6938164B1 (en) 2000-11-22 2005-08-30 Microsoft Corporation Method and system for allowing code to be securely initialized in a computer
US7069322B2 (en) * 2000-11-22 2006-06-27 Canon Kabushiki Kaisha Web browser apparatus and web browsing method
US20020066038A1 (en) * 2000-11-29 2002-05-30 Ulf Mattsson Method and a system for preventing impersonation of a database user
US20020107802A1 (en) * 2000-12-06 2002-08-08 Ashwin Philips Secure file downloading
US7085744B2 (en) * 2000-12-08 2006-08-01 International Business Machines Corporation Method and system for conducting a transaction over a network
CN1503953A (en) * 2000-12-08 2004-06-09 松下电器产业株式会社 Distribution device, terminal device, and programe and method for use therein
US20020112175A1 (en) * 2000-12-13 2002-08-15 Makofka Douglas S. Conditional access for functional units
US7150045B2 (en) * 2000-12-14 2006-12-12 Widevine Technologies, Inc. Method and apparatus for protection of electronic media
US6978376B2 (en) 2000-12-15 2005-12-20 Authentica, Inc. Information security architecture for encrypting documents for remote access while maintaining access control
WO2002059770A1 (en) * 2000-12-18 2002-08-01 Cora Alisuag Computer oriented record administration system
US6965683B2 (en) 2000-12-21 2005-11-15 Digimarc Corporation Routing networks for use with watermark systems
WO2002051057A3 (en) * 2000-12-21 2004-04-01 Aspsecure Corp Methods for rights enabled peer-to-peer networking
JP4064101B2 (en) * 2000-12-22 2008-03-19 株式会社リコー Image forming apparatus, the encrypted data processing method and encryption data processing system
US7454796B2 (en) * 2000-12-22 2008-11-18 Canon Kabushiki Kaisha Obtaining temporary exclusive control of a printing device
US7818808B1 (en) 2000-12-27 2010-10-19 Intel Corporation Processor mode for limiting the operation of guest software running on a virtual machine supported by a virtual machine monitor
US6912294B2 (en) * 2000-12-29 2005-06-28 Contentguard Holdings, Inc. Multi-stage watermarking process and system
US7236958B2 (en) * 2001-01-05 2007-06-26 Microsoft Corporation Electronic software license with software product installer identifier
US7389247B2 (en) * 2001-01-16 2008-06-17 International Business Machines Corporation Content insurance
US8069116B2 (en) * 2001-01-17 2011-11-29 Contentguard Holdings, Inc. System and method for supplying and managing usage rights associated with an item repository
EP1290823B1 (en) * 2001-06-07 2005-12-28 ContentGuard Holdings, Inc. Method and apparatus for distributing enforceable property rights
US7028009B2 (en) * 2001-01-17 2006-04-11 Contentguardiholdings, Inc. Method and apparatus for distributing enforceable property rights
CN103780631B (en) * 2001-01-17 2017-05-24 康坦夹德控股股份有限公司 Use standard presentation engine system and method for digital rights management
KR100843056B1 (en) 2001-01-17 2008-07-01 콘텐트가드 홀딩즈 인코포레이티드 System and method for digital rights management using a standard rendering engine
US20040039704A1 (en) * 2001-01-17 2004-02-26 Contentguard Holdings, Inc. System and method for supplying and managing usage rights of users and suppliers of items
US20020097416A1 (en) 2001-01-19 2002-07-25 Chang William Ho Output controller processor for universal data output
EP1225513A1 (en) * 2001-01-19 2002-07-24 Eyal Dotan Method for protecting computer programs and data from hostile code
US7613930B2 (en) 2001-01-19 2009-11-03 Trustware International Limited Method for protecting computer programs and data from hostile code
US20020169865A1 (en) * 2001-01-22 2002-11-14 Tarnoff Harry L. Systems for enhancing communication of content over a network
GB0102516D0 (en) * 2001-01-31 2001-03-21 Hewlett Packard Co Trusted gateway system
US6976166B2 (en) * 2001-02-06 2005-12-13 Hewlett-Packard Development Company, L.P. Method and apparatus for partial encryption of content
GB0103986D0 (en) * 2001-02-17 2001-04-04 Hewlett Packard Co Secure e-mail handling using a compartmented operating system
GB2372593B (en) * 2001-02-23 2005-05-18 Hewlett Packard Co Electronic communication
GB0104673D0 (en) 2001-02-23 2001-04-11 Hewlett Packard Co Method of and apparatus for ascertaining the status of a data processing environment
GB2372592B (en) 2001-02-23 2005-03-30 Hewlett Packard Co Information system
DE10109441A1 (en) * 2001-02-27 2002-09-12 Mayah Comm Gmbh A method for recognizing audio-visual data in transmission networks, particularly the Internet
US20020019814A1 (en) 2001-03-01 2002-02-14 Krishnamurthy Ganesan Specifying rights in a digital rights license according to events
US7647402B2 (en) * 2001-03-08 2010-01-12 International Business Machines Corporation Protecting contents of computer data files from suspected intruders by renaming and hiding data files subjected to intrusion
US20020129152A1 (en) * 2001-03-08 2002-09-12 International Business Machines Corporation Protecting contents of computer data files from suspected intruders by programmed file destruction
KR100406630B1 (en) * 2001-03-13 2003-11-20 엘지전자 주식회사 Method for recording and reproducing a demo data, and medium thereof
KR20020072934A (en) * 2001-03-13 2002-09-19 엘지전자 주식회사 Read only optical disc recorded demo data, and method for reproducing them
US7882555B2 (en) * 2001-03-16 2011-02-01 Kavado, Inc. Application layer security method and system
US7313822B2 (en) * 2001-03-16 2007-12-25 Protegrity Corporation Application-layer security method and system
US7181017B1 (en) 2001-03-23 2007-02-20 David Felsher System and method for secure three-party communications
US20020141582A1 (en) * 2001-03-28 2002-10-03 Kocher Paul C. Content security layer providing long-term renewable security
CN100504818C (en) 2003-07-07 2009-06-24 巨视股份有限公司 Method for regulating access for non-volatile memory region and automatic method for judging access
EP1942392A1 (en) * 2001-03-28 2008-07-09 Macrovision Corporation Method, apparatus and optical medium for enabling playback of encrypted digital video on a plurality of playback devices having different security characteristics
US7987510B2 (en) * 2001-03-28 2011-07-26 Rovi Solutions Corporation Self-protecting digital content
US8438465B2 (en) * 2001-04-03 2013-05-07 Purdue Pharma L.P. Privileged communication system with routing controls
US7580988B2 (en) * 2001-04-05 2009-08-25 Intertrust Technologies Corporation System and methods for managing the distribution of electronic content
US7188342B2 (en) * 2001-04-20 2007-03-06 Microsoft Corporation Server controlled branding of client software deployed over computer networks
EP1384126A2 (en) * 2001-04-24 2004-01-28 Hewlett-Packard Company An information security system
US7778816B2 (en) 2001-04-24 2010-08-17 Microsoft Corporation Method and system for applying input mode bias
US20020162019A1 (en) * 2001-04-25 2002-10-31 Berry Michael C. Method and system for managing access to services
US20020162001A1 (en) * 2001-04-25 2002-10-31 Gunter Carl A. Method and system for managing access to services
US20020162004A1 (en) * 2001-04-25 2002-10-31 Gunter Carl A. Method and system for managing access to services
US20050210263A1 (en) * 2001-04-25 2005-09-22 Levas Robert G Electronic form routing and data capture system and method
US6885388B2 (en) * 2001-04-25 2005-04-26 Probaris Technologies Inc. Method for automatically generating list of meeting participants and delegation permission
US20030236977A1 (en) * 2001-04-25 2003-12-25 Levas Robert George Method and system for providing secure access to applications
US20030023862A1 (en) * 2001-04-26 2003-01-30 Fujitsu Limited Content distribution system
WO2002091146A3 (en) 2001-05-09 2003-11-27 Ecd Systems Inc Systems and methods for the prevention of unauthorized use and manipulation of digital content
US8335915B2 (en) * 2002-05-14 2012-12-18 Netapp, Inc. Encryption based security system for network storage
EP1260898A1 (en) * 2001-05-23 2002-11-27 Koninklijke KPN N.V. Method for authenticating files
US8131993B2 (en) 2001-05-23 2012-03-06 Sharestream, Llc System and method for a commercial multimedia rental and distribution system
US7233668B2 (en) * 2001-05-23 2007-06-19 Sharestream, Llc System and method for a commercial multimedia rental and distribution system
JP3546232B2 (en) * 2001-05-25 2004-07-21 佐賀大学長 Materials utilization system and method
DE10126451A1 (en) * 2001-05-31 2002-12-05 Bosch Gmbh Robert Method for activation or deactivation of microcomputer system storage arrangement, e.g. for motor vehicle control device, involves initially verifying identifier signature at start-up of computer
US20080021836A1 (en) * 2001-05-31 2008-01-24 Contentguard Holding, Inc. Method and system for subscription digital rights management
US7725401B2 (en) 2001-05-31 2010-05-25 Contentguard Holdings, Inc. Method and apparatus for establishing usage rights for digital content to be created in the future
US8275716B2 (en) 2001-05-31 2012-09-25 Contentguard Holdings, Inc. Method and system for subscription digital rights management
EP1263233A3 (en) * 2001-05-31 2005-06-15 Matsushita Electric Industrial Co., Ltd. Apparatus, method and program for content distribution
US7774279B2 (en) 2001-05-31 2010-08-10 Contentguard Holdings, Inc. Rights offering and granting
US8099364B2 (en) 2001-05-31 2012-01-17 Contentguard Holdings, Inc. Digital rights management of content when content is a future live event
US6876984B2 (en) 2001-05-31 2005-04-05 Contentguard Holdings, Inc. Method and apparatus for establishing usage rights for digital content to be created in the future
US6754642B2 (en) 2001-05-31 2004-06-22 Contentguard Holdings, Inc. Method and apparatus for dynamically assigning usage rights to digital works
US6895503B2 (en) * 2001-05-31 2005-05-17 Contentguard Holdings, Inc. Method and apparatus for hierarchical assignment of rights to documents and documents having such rights
US8275709B2 (en) 2001-05-31 2012-09-25 Contentguard Holdings, Inc. Digital rights management of content when content is a future live event
US8001053B2 (en) 2001-05-31 2011-08-16 Contentguard Holdings, Inc. System and method for rights offering and granting using shared state variables
US7823174B2 (en) 2002-01-02 2010-10-26 Sony Corporation Macro-block based content replacement by PID mapping
US7336787B2 (en) * 2001-06-06 2008-02-26 Sony Corporation Critical packet partial encryption
US7376233B2 (en) * 2002-01-02 2008-05-20 Sony Corporation Video slice and active region based multiple partial encryption
US7058816B2 (en) * 2001-06-06 2006-06-06 Digeo, Inc. Apparatus and method for content entry management
US8051443B2 (en) * 2002-01-02 2011-11-01 Sony Corporation Content replacement by PID mapping
US7895616B2 (en) 2001-06-06 2011-02-22 Sony Corporation Reconstitution of program streams split across multiple packet identifiers
US7155012B2 (en) 2002-01-02 2006-12-26 Sony Corporation Slice mask and moat pattern partial encryption
US7765567B2 (en) * 2002-01-02 2010-07-27 Sony Corporation Content replacement by PID mapping
US7302059B2 (en) 2002-01-02 2007-11-27 Sony Corporation Star pattern partial encryption
US8027470B2 (en) * 2002-01-02 2011-09-27 Sony Corporation Video slice and active region based multiple partial encryption
US7292690B2 (en) 2002-01-02 2007-11-06 Sony Corporation Video scene change detection
US7774280B2 (en) 2001-06-07 2010-08-10 Contentguard Holdings, Inc. System and method for managing transfer of rights using shared state variables
KR20030096250A (en) 2001-06-07 2003-12-24 콘텐트가드 홀딩즈 인코포레이티드 Method and apparatus for supporting multiple trust zones in a digital rights management system
ES2266513T5 (en) * 2001-06-07 2015-03-26 Contentguard Holdings, Inc. Method and apparatus to track the status of resources on a system to direct the use of resources
GB2376764B (en) * 2001-06-19 2004-12-29 Hewlett Packard Co Multiple trusted computing environments
GB0114898D0 (en) * 2001-06-19 2001-08-08 Hewlett Packard Co Interaction with electronic services and markets
GB0114882D0 (en) * 2001-06-19 2001-08-08 Hewlett Packard Co Performing secure and insecure computing operations in a compartmented operating system
GB2376765B (en) 2001-06-19 2004-12-29 Hewlett Packard Co Multiple trusted computing environments with verifiable environment identities
GB2376763B (en) 2001-06-19 2004-12-15 Hewlett Packard Co Demonstrating integrity of a compartment of a compartmented operating system
US20020198841A1 (en) * 2001-06-21 2002-12-26 Isaacson Shawn Ray Method and system for providing secure digital sound recording
US7110525B1 (en) 2001-06-25 2006-09-19 Toby Heller Agent training sensitive call routing system
US7979914B2 (en) 2001-06-25 2011-07-12 Audible, Inc. Time-based digital content authorization
US7239708B2 (en) 2001-06-27 2007-07-03 Microsoft Corporation Protecting decrypted compressed content and decrypted decompressed content at a digital rights management client
US6948073B2 (en) 2001-06-27 2005-09-20 Microsoft Corporation Protecting decrypted compressed content and decrypted decompressed content at a digital rights management client
US7113299B2 (en) * 2001-07-12 2006-09-26 Canon Development Americas, Inc. Printing with credit card as identification
US20030018791A1 (en) * 2001-07-18 2003-01-23 Chia-Chi Feng System and method for electronic file transmission
US20030023451A1 (en) * 2001-07-27 2003-01-30 Willner Barry E. Method and apparatus for identifying privacy levels
US7257844B2 (en) 2001-07-31 2007-08-14 Marvell International Ltd. System and method for enhanced piracy protection in a wireless personal communication device
US7502940B2 (en) * 2001-08-01 2009-03-10 Sas Validy Method to protect software against unwanted use with a “conditional branch” principle
US7343494B2 (en) * 2001-08-01 2008-03-11 Sas Validy Method to protect software against unwanted use with a “renaming” principle
US7269740B2 (en) * 2001-08-01 2007-09-11 Sas Validy Method to protect software against unwanted use with a “variable principle”
US7434064B2 (en) * 2001-08-01 2008-10-07 Sas Validy Method to protect software against unwanted use with a “elementary functions” principle
US7191440B2 (en) * 2001-08-15 2007-03-13 Intel Corporation Tracking operating system process and thread execution and virtual machine execution in hardware or in a virtual machine monitor
US20030037003A1 (en) * 2001-08-16 2003-02-20 Parker Gillian Elizabeth ERushes rights
US20030177248A1 (en) * 2001-09-05 2003-09-18 International Business Machines Corporation Apparatus and method for providing access rights information on computer accessible content
US7171562B2 (en) * 2001-09-05 2007-01-30 International Business Machines Corporation Apparatus and method for providing a user interface based on access rights information
US20030046578A1 (en) * 2001-09-05 2003-03-06 International Business Machines Incorporation Apparatus and method for providing access rights information in metadata of a file
US20030051039A1 (en) * 2001-09-05 2003-03-13 International Business Machines Corporation Apparatus and method for awarding a user for accessing content based on access rights information
US20030061567A1 (en) * 2001-09-05 2003-03-27 International Business Machines Corporation Apparatus and method for protecting entries in a form using access rights information
CN100390892C (en) * 2001-09-14 2008-05-28 索尼株式会社 Recording medium reproduction method and reproduction apparatus and recording medium recording method and recording apparatus
US7174463B2 (en) 2001-10-04 2007-02-06 Lenovo (Singapore) Pte. Ltd. Method and system for preboot user authentication
US20030084349A1 (en) * 2001-10-12 2003-05-01 Oliver Friedrichs Early warning system for network attacks
US7506053B1 (en) * 2001-10-17 2009-03-17 Cisco Technology, Inc. Software distribution system and method
JP4422372B2 (en) 2001-10-23 2010-02-24 トヨタ自動車株式会社 Map data processing apparatus
US7024555B2 (en) 2001-11-01 2006-04-04 Intel Corporation Apparatus and method for unilaterally loading a secure operating system within a multiprocessor environment
JP3944379B2 (en) * 2001-11-06 2007-07-11 シャープ株式会社 Waste water treatment method and a wastewater treatment device
US7284061B2 (en) * 2001-11-13 2007-10-16 Canon Kabushiki Kaisha Obtaining temporary exclusive control of a device
CN1331125C (en) * 2001-11-15 2007-08-08 索尼音乐娱乐公司 System and method for controlling the use and duplication of digital content distributed on removable media
US7243230B2 (en) 2001-11-16 2007-07-10 Microsoft Corporation Transferring application secrets in a trusted operating system environment
US7159240B2 (en) * 2001-11-16 2007-01-02 Microsoft Corporation Operating system upgrades in a trusted operating system environment
US7137004B2 (en) 2001-11-16 2006-11-14 Microsoft Corporation Manifest-based trusted agent management in a trusted operating system environment
US7974923B2 (en) * 2001-11-20 2011-07-05 Contentguard Holdings, Inc. Extensible rights expression processing system
US7558759B2 (en) * 2001-11-20 2009-07-07 Contentguard Holdings, Inc. Systems and methods for creating, manipulating and processing rights and contract expressions using tokenized templates
US7840488B2 (en) * 2001-11-20 2010-11-23 Contentguard Holdings, Inc. System and method for granting access to an item or permission to use an item based on configurable conditions
GB2382419B (en) * 2001-11-22 2005-12-14 * Hewlett-Packard Company Apparatus and method for creating a trusted environment
JP2003228631A (en) * 2001-11-28 2003-08-15 Canon Inc Information processing system, information processor, information processing method, its program and recording medium
US6546493B1 (en) 2001-11-30 2003-04-08 Networks Associates Technology, Inc. System, method and computer program product for risk assessment scanning based on detected anomalous events
US8266703B1 (en) 2001-11-30 2012-09-11 Mcafee, Inc. System, method and computer program product for improving computer network intrusion detection by risk prioritization
US7315824B2 (en) * 2001-12-04 2008-01-01 Canon Development Americas, Inc. Internet printing by hotel guests
US7478418B2 (en) 2001-12-12 2009-01-13 Guardian Data Storage, Llc Guaranteed delivery of changes to security policies in a distributed system
US7580972B2 (en) 2001-12-12 2009-08-25 Valve Corporation Method and system for controlling bandwidth on client and server
US7373406B2 (en) 2001-12-12 2008-05-13 Valve Corporation Method and system for effectively communicating file properties and directory structures in a distributed file system
US8108687B2 (en) 2001-12-12 2012-01-31 Valve Corporation Method and system for granting access to system and content
US7243226B2 (en) 2001-12-12 2007-07-10 Valve Corporation Method and system for enabling content security in a distributed system
US7290040B2 (en) * 2001-12-12 2007-10-30 Valve Corporation Method and system for load balancing an authentication system
CA2413231C (en) * 2001-12-25 2007-10-23 Ntt Docomo, Inc. Device and method for restricting content access and storage
US7853495B2 (en) * 2001-12-28 2010-12-14 Access Co., Ltd. Usage period management system for applications
US7328345B2 (en) * 2002-01-29 2008-02-05 Widevine Technologies, Inc. Method and system for end to end securing of content for video on demand
WO2003065273A1 (en) * 2002-01-30 2003-08-07 Powers Arthur C A system and method of providing an interface to the internet
US20030148812A1 (en) * 2002-02-01 2003-08-07 Paulsen Craig A. Gaming system and gaming method
US7631196B2 (en) 2002-02-25 2009-12-08 Intel Corporation Method and apparatus for loading a trustable operating system
US7124273B2 (en) * 2002-02-25 2006-10-17 Intel Corporation Method and apparatus for translating guest physical addresses in a virtual machine environment
US7316032B2 (en) * 2002-02-27 2008-01-01 Amad Tayebi Method for allowing a customer to preview, acquire and/or pay for information and a system therefor
US7562397B1 (en) * 2002-02-27 2009-07-14 Mithal Ashish K Method and system for facilitating search, selection, preview, purchase evaluation, offering for sale, distribution, and/or sale of digital content and enhancing the security thereof
WO2003071850A3 (en) * 2002-02-28 2004-01-29 Ofir Carny A system and method for monitoring unauthorized dissemination of documents and portable media
US20030172299A1 (en) * 2002-03-05 2003-09-11 Gunter Carl A. Method and system for maintaining secure access to web server services using permissions
US20030172298A1 (en) * 2002-03-05 2003-09-11 Gunter Carl A. Method and system for maintaining secure access to web server services using server-delegated permissions
US20030172297A1 (en) * 2002-03-05 2003-09-11 Gunter Carl A. Method and system for maintaining secure access to web server services using public keys
US20030172296A1 (en) * 2002-03-05 2003-09-11 Gunter Carl A. Method and system for maintaining secure access to web server services using permissions delegated via electronic messaging systems
US7372952B1 (en) 2002-03-07 2008-05-13 Wai Wu Telephony control system with intelligent call routing
US8132250B2 (en) 2002-03-08 2012-03-06 Mcafee, Inc. Message profiling systems and methods
US7870203B2 (en) 2002-03-08 2011-01-11 Mcafee, Inc. Methods and systems for exposing messaging reputation to an end user
US7124438B2 (en) 2002-03-08 2006-10-17 Ciphertrust, Inc. Systems and methods for anomaly detection in patterns of monitored communications
US7903549B2 (en) 2002-03-08 2011-03-08 Secure Computing Corporation Content-based policy compliance systems and methods
US7693947B2 (en) 2002-03-08 2010-04-06 Mcafee, Inc. Systems and methods for graphically displaying messaging traffic
US7694128B2 (en) 2002-03-08 2010-04-06 Mcafee, Inc. Systems and methods for secure communication delivery
US8561167B2 (en) 2002-03-08 2013-10-15 Mcafee, Inc. Web reputation scoring
US8635690B2 (en) 2004-11-05 2014-01-21 Mcafee, Inc. Reputation based message processing
US7937480B2 (en) 2005-06-02 2011-05-03 Mcafee, Inc. Aggregation of reputation data
US20060015942A1 (en) 2002-03-08 2006-01-19 Ciphertrust, Inc. Systems and methods for classification of messaging entities
US8578480B2 (en) 2002-03-08 2013-11-05 Mcafee, Inc. Systems and methods for identifying potentially malicious messages
CA2478299C (en) * 2002-03-08 2012-05-22 Ciphertrust, Inc. Systems and methods for enhancing electronic communication security
US7096498B2 (en) 2002-03-08 2006-08-22 Cipher Trust, Inc. Systems and methods for message threat management
US7805371B2 (en) * 2002-03-14 2010-09-28 Contentguard Holdings, Inc. Rights expression profile system and method
US20030233169A1 (en) * 2002-03-14 2003-12-18 Contentguard Holdings, Inc. System and method for expressing usage rights using light signals
US20030229593A1 (en) * 2002-03-14 2003-12-11 Michael Raley Rights expression profile system and method
US20050246279A1 (en) * 2002-03-15 2005-11-03 Melvyn Stamelman Provision of graphic designs
US20030188024A1 (en) * 2002-03-28 2003-10-02 International Business Machines Corporation Method and system for a cloaking service for use with a distributed virtual enterprise
US7069442B2 (en) 2002-03-29 2006-06-27 Intel Corporation System and method for execution of a secured environment initialization instruction
US7028149B2 (en) * 2002-03-29 2006-04-11 Intel Corporation System and method for resetting a platform configuration register
US7533027B2 (en) * 2002-04-02 2009-05-12 Warner Bros. Entertainment Inc. Methods and apparatus for uniquely identifying a large number of film prints
US7308430B2 (en) * 2002-04-02 2007-12-11 Warner Bros. Entertainment Inc. Methods and apparatus for uniquely identifying a large number of film prints
US8656502B2 (en) * 2002-04-04 2014-02-18 Mcafee, Inc. Controlling use of a computer program installed on a computer
US20070015981A1 (en) * 2003-08-29 2007-01-18 Benaron David A Device and methods for the detection of locally-weighted tissue ischemia
US6711426B2 (en) * 2002-04-09 2004-03-23 Spectros Corporation Spectroscopy illuminator with improved delivery efficiency for high optical density and reduced thermal load
US20080009689A1 (en) * 2002-04-09 2008-01-10 Benaron David A Difference-weighted somatic spectroscopy
US7614077B2 (en) * 2002-04-10 2009-11-03 International Business Machines Corporation Persistent access control of protected content
US7409685B2 (en) 2002-04-12 2008-08-05 Hewlett-Packard Development Company, L.P. Initialization and update of software and/or firmware in electronic devices
DE10216384A1 (en) * 2002-04-12 2003-10-30 Scm Microsystems Gmbh Access control network
JP4326186B2 (en) * 2002-04-15 2009-09-02 ソニー株式会社 Information processing apparatus and method
US20030200313A1 (en) * 2002-04-17 2003-10-23 General Instrument Corporation Digital rights management system for clients with low level security
US7890771B2 (en) 2002-04-17 2011-02-15 Microsoft Corporation Saving and retrieving data based on public key encryption
US7487365B2 (en) * 2002-04-17 2009-02-03 Microsoft Corporation Saving and retrieving data based on symmetric key encryption
US7343627B2 (en) * 2002-04-29 2008-03-11 Sharp Laboratories Of America, Inc. Secure document-data-handling system and methodology
EP1502221A4 (en) * 2002-04-29 2009-08-05 Contentguard Holdings Inc Rights management system using legality expression language
US7424973B2 (en) * 2002-04-29 2008-09-16 Datawave Systems, Inc. Prepaid broadband internet and software service method and apparatus
US20030204738A1 (en) * 2002-04-30 2003-10-30 Morgan Stephen Paul System and method for secure distribution of digital content via a network
CA2483605A1 (en) 2002-05-02 2003-11-13 David Molnar Method and apparatus for protecting information and privacy
US8392952B2 (en) * 2002-05-03 2013-03-05 Time Warner Cable Enterprises Llc Programming content processing and management system and method
US7325194B2 (en) 2002-05-07 2008-01-29 Microsoft Corporation Method, system, and apparatus for converting numbers between measurement systems based upon semantically labeled strings
US7707496B1 (en) 2002-05-09 2010-04-27 Microsoft Corporation Method, system, and apparatus for converting dates between calendars and languages based upon semantically labeled strings
KR20040106501A (en) * 2002-05-09 2004-12-17 카바도, 인크. Method for the automatic setting and updating of a security policy
WO2003096136A2 (en) * 2002-05-10 2003-11-20 Protexis Inc. System and method for multi-tiered license management and distribution using networked clearinghouses
US7631184B2 (en) 2002-05-14 2009-12-08 Nicholas Ryan System and method for imposing security on copies of secured items
US7707024B2 (en) 2002-05-23 2010-04-27 Microsoft Corporation Method, system, and apparatus for converting currency values based upon semantically labeled strings
US7742048B1 (en) 2002-05-23 2010-06-22 Microsoft Corporation Method, system, and apparatus for converting numbers based upon semantically labeled strings
JP2003345641A (en) * 2002-05-29 2003-12-05 Ricoh Co Ltd Storage medium and program
US20030226024A1 (en) * 2002-06-04 2003-12-04 Qwest Communications International Inc. Secure internet documents
US7281245B2 (en) * 2002-06-05 2007-10-09 Microsoft Corporation Mechanism for downloading software components from a remote source for use by a local software application
US7827546B1 (en) 2002-06-05 2010-11-02 Microsoft Corporation Mechanism for downloading software components from a remote source for use by a local software application
US7356537B2 (en) 2002-06-06 2008-04-08 Microsoft Corporation Providing contextually sensitive tools and help content in computer-generated documents
US20030229794A1 (en) * 2002-06-07 2003-12-11 Sutton James A. System and method for protection against untrusted system management code by redirecting a system management interrupt and creating a virtual machine container
US7174332B2 (en) * 2002-06-11 2007-02-06 Ip. Com, Inc. Method and apparatus for safeguarding files
US6820177B2 (en) 2002-06-12 2004-11-16 Intel Corporation Protected configuration space in a protected environment
US7367044B2 (en) * 2002-06-14 2008-04-29 Clink Systems, Ltd. System and method for network operation
US7272725B2 (en) * 2002-06-25 2007-09-18 Sas Validy Method to protect software against unwanted use with a “temporal dissociation” principle
US7716676B2 (en) 2002-06-25 2010-05-11 Microsoft Corporation System and method for issuing a message to a program
US7392479B2 (en) 2002-06-27 2008-06-24 Microsoft Corporation System and method for providing namespace related information
US7209915B1 (en) 2002-06-28 2007-04-24 Microsoft Corporation Method, system and apparatus for routing a query to one or more providers
WO2004003806A1 (en) * 2002-06-28 2004-01-08 Fujitsu Limited Content providing method, content providing system, content providing apparatus, and content reproduction apparatus
US7360210B1 (en) 2002-07-03 2008-04-15 Sprint Spectrum L.P. Method and system for dynamically varying intermediation functions in a communication path between a content server and a client station
US7801945B1 (en) 2002-07-03 2010-09-21 Sprint Spectrum L.P. Method and system for inserting web content through intermediation between a content server and a client station
US7568002B1 (en) 2002-07-03 2009-07-28 Sprint Spectrum L.P. Method and system for embellishing web content during transmission between a content server and a client station
US7885896B2 (en) 2002-07-09 2011-02-08 Avaya Inc. Method for authorizing a substitute software license server
US8041642B2 (en) 2002-07-10 2011-10-18 Avaya Inc. Predictive software license balancing
US8838622B2 (en) * 2002-07-13 2014-09-16 Cricket Media, Inc. Method and system for monitoring and filtering data transmission
US20040103122A1 (en) * 2002-07-13 2004-05-27 John Irving Method and system for filtered web browsing in a multi-level monitored and filtered system
US20040122692A1 (en) * 2002-07-13 2004-06-24 John Irving Method and system for interactive, multi-user electronic data transmission in a multi-level monitored and filtered system
US20040111423A1 (en) * 2002-07-13 2004-06-10 John Irving Method and system for secure, community profile generation and access via a communication system
US20040103118A1 (en) * 2002-07-13 2004-05-27 John Irving Method and system for multi-level monitoring and filtering of electronic transmissions
US7805606B2 (en) * 2002-07-29 2010-09-28 Bea Systems, Inc. Computer system for authenticating a computing device
US20040025045A1 (en) * 2002-07-30 2004-02-05 Sentry Technologies Pte, Ltd. Method for switching rapidly between computing modes
US20040093595A1 (en) * 2002-08-08 2004-05-13 Eric Bilange Software application framework for network-connected devices
US7555750B1 (en) * 2002-08-22 2009-06-30 Hewlett-Packard Development Company, L.P. Update package generator employing partial predictive mapping techniques for generating update packages for mobile handsets
GB0219664D0 (en) * 2002-08-23 2002-10-02 Hewlett Packard Co A method of controlling the processing of data
US7979700B2 (en) * 2002-08-23 2011-07-12 Sandisk Corporation Apparatus, system and method for securing digital documents in a digital appliance
US7707116B2 (en) 2002-08-30 2010-04-27 Avaya Inc. Flexible license file feature controls
US7681245B2 (en) 2002-08-30 2010-03-16 Avaya Inc. Remote feature activator feature extraction
US7698225B2 (en) * 2002-08-30 2010-04-13 Avaya Inc. License modes in call processing
US7966520B2 (en) 2002-08-30 2011-06-21 Avaya Inc. Software licensing for spare processors
US7353532B2 (en) * 2002-08-30 2008-04-01 International Business Machines Corporation Secure system and method for enforcement of privacy policy and protection of confidentiality
US7401352B2 (en) * 2002-08-30 2008-07-15 International Business Machines Corporation Secure system and method for enforcement of privacy policy and protection of confidentiality
US7280983B2 (en) * 2002-09-02 2007-10-09 Pioneer Corporation Information recording medium having reproduction control program recorded thereon and reproduction control program
US8818896B2 (en) 2002-09-09 2014-08-26 Sony Corporation Selective encryption with coverage encryption
JP2004102789A (en) * 2002-09-11 2004-04-02 Sony Corp License management device, license management method and computer program
US7200868B2 (en) * 2002-09-12 2007-04-03 Scientific-Atlanta, Inc. Apparatus for encryption key management
GB0221639D0 (en) * 2002-09-17 2002-10-30 Hewlett Packard Co Method and apparatus for printing
US7448066B2 (en) * 2002-09-19 2008-11-04 International Business Machines Corporation Application server object-level security for distributed computing domains
JP4527374B2 (en) * 2002-09-19 2010-08-18 株式会社リコー Image forming apparatus and the document attribute management server
US7594271B2 (en) * 2002-09-20 2009-09-22 Widevine Technologies, Inc. Method and system for real-time tamper evidence gathering for software
US20040117636A1 (en) * 2002-09-25 2004-06-17 David Cheng System, method and apparatus for secure two-tier backup and retrieval of authentication information
US8180051B1 (en) * 2002-10-07 2012-05-15 Cisco Technology, Inc Methods and apparatus for securing communications of a user operated device
JP2004164604A (en) * 2002-10-11 2004-06-10 Ricoh Co Ltd Electronic file management device, program, and file access control method
US7373658B1 (en) 2002-10-25 2008-05-13 Aol Llc Electronic loose-leaf remote control for enabling access to content from a media player
US7647277B1 (en) 2002-10-25 2010-01-12 Time Warner Inc. Regulating access to content using a multitiered rule base
US20040088563A1 (en) * 2002-11-01 2004-05-06 Hogan Dirk J. Computer access authorization
US6904591B2 (en) * 2002-11-01 2005-06-07 Oz Development, Inc. Software development system for editable executables
US7207067B2 (en) * 2002-11-12 2007-04-17 Aol Llc Enforcing data protection legislation in Web data services
US7089429B2 (en) * 2002-11-25 2006-08-08 Nokia Corporation Creation of local usage rights voucher
EP1424618B1 (en) * 2002-11-29 2012-01-04 Sap Ag Method and computer system for protecting electronic documents
US7346927B2 (en) * 2002-12-12 2008-03-18 Access Business Group International Llc System and method for storing and accessing secure data
US7908401B2 (en) * 2002-12-12 2011-03-15 Flexiworld Technology, Inc. Method and device for wireless communication between computing devices
WO2004055640A3 (en) * 2002-12-12 2005-03-10 Access Business Group Int Llc System and method for storing and accessing secure data
US20040127254A1 (en) * 2002-12-12 2004-07-01 Chang William Ho Device for wireless communication between computing devices
JP4099049B2 (en) * 2002-12-16 2008-06-11 株式会社エヌ・ティ・ティ・ドコモ Communication method and communication system
US7318141B2 (en) 2002-12-17 2008-01-08 Intel Corporation Methods and systems to control virtual machines
US7793286B2 (en) * 2002-12-19 2010-09-07 Intel Corporation Methods and systems to manage machine state in virtual machine operations
US7577838B1 (en) 2002-12-20 2009-08-18 Alain Rossmann Hybrid systems for securing digital assets
US7890997B2 (en) 2002-12-26 2011-02-15 Avaya Inc. Remote feature activation authentication file system
US7900017B2 (en) 2002-12-27 2011-03-01 Intel Corporation Mechanism for remapping post virtual machine memory pages
US20040128537A1 (en) * 2002-12-30 2004-07-01 International Business Machines Corporation Retrospective policy safety net
US7200760B2 (en) * 2002-12-31 2007-04-03 Protexis, Inc. System for persistently encrypting critical software data to control the operation of an executable software program
US7779247B2 (en) 2003-01-09 2010-08-17 Jericho Systems Corporation Method and system for dynamically implementing an enterprise resource policy
US7251328B2 (en) 2003-01-14 2007-07-31 General Instrument Corporation System for secure decryption of streaming media using selective decryption of header information and decryption of reassembled content
US20050075155A1 (en) * 2003-01-30 2005-04-07 David Sitrick Video architecture and methodology for family of related games
US9818136B1 (en) 2003-02-05 2017-11-14 Steven M. Hoffberg System and method for determining contingent relevance
US8131649B2 (en) * 2003-02-07 2012-03-06 Igware, Inc. Static-or-dynamic and limited-or-unlimited content rights
US7779482B1 (en) 2003-02-07 2010-08-17 iGware Inc Delivery of license information using a short messaging system protocol in a closed content distribution system
US20100017627A1 (en) 2003-02-07 2010-01-21 Broadon Communications Corp. Ensuring authenticity in a closed content distribution system
US7322042B2 (en) * 2003-02-07 2008-01-22 Broadon Communications Corp. Secure and backward-compatible processor and secure software execution thereon
US20040267384A1 (en) * 2003-02-07 2004-12-30 Broadon Communications, Inc. Integrated console and controller
US7783614B2 (en) 2003-02-13 2010-08-24 Microsoft Corporation Linking elements of a document to corresponding fields, queries and/or procedures in a database
US7370212B2 (en) 2003-02-25 2008-05-06 Microsoft Corporation Issuing a publisher use license off-line in a digital rights management (DRM) system
US7676034B1 (en) 2003-03-07 2010-03-09 Wai Wu Method and system for matching entities in an auction
US7356143B2 (en) * 2003-03-18 2008-04-08 Widevine Technologies, Inc System, method, and apparatus for securely providing content viewable on a secure device
US7007170B2 (en) * 2003-03-18 2006-02-28 Widevine Technologies, Inc. System, method, and apparatus for securely providing content viewable on a secure device
US7325130B2 (en) * 2003-03-21 2008-01-29 International Business Machines Corporation Method for guaranteeing freshness of results for queries against a non-secure data store
US8510571B1 (en) 2003-03-24 2013-08-13 Hoi Chang System and method for inserting security mechanisms into a software program
US7292692B2 (en) 2003-03-25 2007-11-06 Sony Corporation Content scrambling with minimal impact on legacy devices
US8533840B2 (en) * 2003-03-25 2013-09-10 DigitalDoors, Inc. Method and system of quantifying risk
JP2004295185A (en) * 2003-03-25 2004-10-21 Sharp Corp Method and device for designing integrated circuit
WO2004086363A3 (en) * 2003-03-27 2005-11-03 Arik Bovshover Data storage device with full access by all users
JP2004302516A (en) * 2003-03-28 2004-10-28 Ntt Docomo Inc Terminal device and program
US7703002B2 (en) * 2003-03-31 2010-04-20 Ricoh Company, Ltd. Method and apparatus for composing multimedia documents
US7536638B2 (en) * 2003-03-31 2009-05-19 Ricoh Co., Ltd. Action stickers for identifying and processing stored documents
US7509569B2 (en) * 2003-03-31 2009-03-24 Ricoh Co., Ltd. Action stickers for nested collections
US7757162B2 (en) * 2003-03-31 2010-07-13 Ricoh Co. Ltd. Document collection manipulation
US7739583B2 (en) 2003-03-31 2010-06-15 Ricoh Company, Ltd. Multimedia document sharing method and apparatus
US20070050696A1 (en) * 2003-03-31 2007-03-01 Piersol Kurt W Physical key for accessing a securely stored digital document
US20040199471A1 (en) * 2003-04-01 2004-10-07 Hardjono Thomas P. Rights trading system
US20040199771A1 (en) * 2003-04-04 2004-10-07 Widevine Technologies, Inc. Method for tracing a security breach in highly distributed content
US7805720B2 (en) 2003-04-11 2010-09-28 Flexiworld Technologies, Inc. Autorun for integrated circuit memory component
US7315946B1 (en) * 2003-04-14 2008-01-01 Aol Llc Out-of-band tokens for rights access
US8352725B1 (en) 2003-04-21 2013-01-08 Cisco Technology, Inc. Method and apparatus for managing secure communications
US7739494B1 (en) 2003-04-25 2010-06-15 Symantec Corporation SSL validation and stripping using trustworthiness factors
US7366919B1 (en) 2003-04-25 2008-04-29 Symantec Corporation Use of geo-location data for spam detection
US7711550B1 (en) 2003-04-29 2010-05-04 Microsoft Corporation Methods and system for recognizing names in a computer-generated document and for providing helpful actions associated with recognized names
US7900038B2 (en) * 2003-04-29 2011-03-01 Wells Fargo Bank, N.A. Method and apparatus for a broker entity
US8429041B2 (en) * 2003-05-09 2013-04-23 American Express Travel Related Services Company, Inc. Systems and methods for managing account information lifecycles
US7398544B2 (en) * 2003-05-12 2008-07-08 Sony Corporation Configurable cableCARD
US7558841B2 (en) 2003-05-14 2009-07-07 Microsoft Corporation Method, system, and computer-readable medium for communicating results to a data query in a computer network
US7590122B2 (en) * 2003-05-16 2009-09-15 Nortel Networks Limited Method and apparatus for session control
US20040249755A1 (en) * 2003-06-03 2004-12-09 Bea Systems, Inc. Self-service customer license management application using a group administration application
US20040249653A1 (en) * 2003-06-03 2004-12-09 Bea Systems, Inc. Self-service customer license management application allowing users to input missing licenses
US20040249760A1 (en) * 2003-06-03 2004-12-09 Bea Systems, Inc. Self-service customer license management application using encrypted universal resource locators
US20040249761A1 (en) * 2003-06-03 2004-12-09 Bea Systems, Inc. Self-service customer license management application providing transaction history
US20040249756A1 (en) * 2003-06-03 2004-12-09 Bea Systems, Inc. Self-service customer license management application allowing software version upgrade and downgrade
US20040249762A1 (en) * 2003-06-03 2004-12-09 Bea Systems, Inc. Self-service customer license management application using configuration input pages
US20040267761A1 (en) * 2003-06-23 2004-12-30 Jiang-Liang Hou Method/apparatus for managing information including word codes
US7792828B2 (en) 2003-06-25 2010-09-07 Jericho Systems Corporation Method and system for selecting content items to be presented to a viewer
US7415708B2 (en) 2003-06-26 2008-08-19 Intel Corporation Virtual machine management using processor state information
US7685642B2 (en) * 2003-06-26 2010-03-23 Contentguard Holdings, Inc. System and method for controlling rights expressions by stakeholders of an item
US7899174B1 (en) 2003-06-26 2011-03-01 Nortel Networks Limited Emergency services for packet networks
US7739588B2 (en) 2003-06-27 2010-06-15 Microsoft Corporation Leveraging markup language data for semantically labeling text strings and data and for providing actions based on semantically labeled text strings and data
US7730543B1 (en) 2003-06-30 2010-06-01 Satyajit Nath Method and system for enabling users of a group shared across multiple file security systems to access secured files
US7568229B1 (en) 2003-07-01 2009-07-28 Symantec Corporation Real-time training for a computer code intrusion detection system
US7406714B1 (en) 2003-07-01 2008-07-29 Symantec Corporation Computer code intrusion detection system based on acceptable retrievals
US20050010532A1 (en) * 2003-07-09 2005-01-13 Bea Systems, Inc. Self-service customer license management application using software license bank
CN1864127A (en) * 2003-07-28 2006-11-15 桑迪士克防护内容解决公司 System, apparatus and method for controlling a storage device
CN1929260A (en) * 2003-07-29 2007-03-14 发那科株式会社 Motor and motor manufacturing apparatus
GB2404536B (en) * 2003-07-31 2007-02-28 Hewlett Packard Development Co Protection of data
GB2404537B (en) * 2003-07-31 2007-03-14 Hewlett Packard Development Co Controlling access to data
US7515717B2 (en) * 2003-07-31 2009-04-07 International Business Machines Corporation Security containers for document components
US7555558B1 (en) 2003-08-15 2009-06-30 Michael Frederick Kenrich Method and system for fault-tolerant transfer of files across a network
US20050043960A1 (en) * 2003-08-19 2005-02-24 David Blankley System and automate the licensing, re-use and royalties of authored content in derivative works
US20050119977A1 (en) * 2003-09-05 2005-06-02 Limelight Networks, Llc Management of digital content licenses
US8122215B1 (en) 2003-09-15 2012-02-21 The Directv Group, Inc. Method and apparatus for verifying memory contents
US7286667B1 (en) 2003-09-15 2007-10-23 Sony Corporation Decryption system
US8555273B1 (en) 2003-09-17 2013-10-08 Palm. Inc. Network for updating electronic devices
US7739521B2 (en) 2003-09-18 2010-06-15 Intel Corporation Method of obscuring cryptographic computations
US7457958B2 (en) * 2003-09-22 2008-11-25 Proofprint, Inc. System for detecting authentic e-mail messages
US7496560B2 (en) * 2003-09-23 2009-02-24 Amazon Technologies, Inc. Personalized searchable library with highlighting capabilities
EP1671235A4 (en) * 2003-09-23 2007-10-24 Amazon Com Inc Personalized searchable library with highlighting capabilities and access to electronic images of text based on user ownership of corresponding physical text
US7389273B2 (en) * 2003-09-25 2008-06-17 Scott Andrew Irwin System and method for federated rights management
JP2005107709A (en) * 2003-09-29 2005-04-21 Canon Inc Document transmission control method
US7299493B1 (en) * 2003-09-30 2007-11-20 Novell, Inc. Techniques for dynamically establishing and managing authentication and trust relationships
JP2005107878A (en) * 2003-09-30 2005-04-21 Toshiba Corp System and method for providing semiconductor process technology information and method for purchasing the same
US20050080934A1 (en) 2003-09-30 2005-04-14 Cota-Robles Erik C. Invalidating translation lookaside buffer entries in a virtual machine (VM) system
US8015301B2 (en) * 2003-09-30 2011-09-06 Novell, Inc. Policy and attribute based access to a resource
US7467415B2 (en) * 2003-09-30 2008-12-16 Novell, Inc. Distributed dynamic security for document collaboration
US7788496B2 (en) 2003-10-08 2010-08-31 Microsoft Corporation First computer process and second computer process proxy-executing code on behalf thereof
US7979911B2 (en) * 2003-10-08 2011-07-12 Microsoft Corporation First computer process and second computer process proxy-executing code from third computer process on behalf of first process
US8103592B2 (en) 2003-10-08 2012-01-24 Microsoft Corporation First computer process and second computer process proxy-executing code on behalf of first process
US7464158B2 (en) 2003-10-15 2008-12-09 International Business Machines Corporation Secure initialization of intrusion detection system
US7281274B2 (en) * 2003-10-16 2007-10-09 Lmp Media Llc Electronic media distribution system
US7406174B2 (en) * 2003-10-21 2008-07-29 Widevine Technologies, Inc. System and method for n-dimensional encryption
US7346769B2 (en) 2003-10-23 2008-03-18 International Business Machines Corporation Method for selective encryption within documents
US8234373B1 (en) 2003-10-27 2012-07-31 Sprint Spectrum L.P. Method and system for managing payment for web content based on size of the web content
US20070143700A1 (en) * 2003-10-29 2007-06-21 Tetsuji Fukada Electronic document viewing system
US7310807B2 (en) 2003-10-29 2007-12-18 Sbc Knowledge Ventures, L.P. System and method for local video distribution
US20050134894A1 (en) * 2003-10-31 2005-06-23 Information Handling Services Inc. Remote access printing systems and methods
US7853980B2 (en) 2003-10-31 2010-12-14 Sony Corporation Bi-directional indices for trick mode video-on-demand
US20050097593A1 (en) * 2003-11-05 2005-05-05 Michael Raley System, method and device for selected content distribution
US7109986B2 (en) * 2003-11-19 2006-09-19 Eastman Kodak Company Illumination apparatus
US20050114234A1 (en) * 2003-11-21 2005-05-26 Thomas Andrew J. Software configuration of module dependent on history
US8156343B2 (en) 2003-11-26 2012-04-10 Intel Corporation Accessing private data about the state of a data processing machine from storage that is publicly accessible
US7404195B1 (en) 2003-12-09 2008-07-22 Microsoft Corporation Programmable object model for extensible markup language markup in an application
US7487515B1 (en) 2003-12-09 2009-02-03 Microsoft Corporation Programmable object model for extensible markup language schema validation
US7434157B2 (en) 2003-12-09 2008-10-07 Microsoft Corporation Programmable object model for namespace or schema library support in a software application
US7178102B1 (en) 2003-12-09 2007-02-13 Microsoft Corporation Representing latent data in an extensible markup language document
JP4348173B2 (en) * 2003-12-17 2009-10-21 株式会社エヌ・ティ・ティ・ドコモ Communication terminal
US7260380B2 (en) * 2003-12-18 2007-08-21 Sap Aktiengesellschaft Storing and synchronizing data on a removable storage medium
US8037314B2 (en) 2003-12-22 2011-10-11 Intel Corporation Replacing blinded authentication authority
EP1700182B1 (en) * 2003-12-30 2009-06-17 Wibu-Systems AG Authorization code recovering method
US7818259B2 (en) * 2004-01-23 2010-10-19 Siemens Aktiengesellschaft Prepaid licensing system and method
DE602005017369D1 (en) * 2004-02-03 2009-12-10 Sandisk Secure Content Solutio Protection of digital data content
US7509573B1 (en) 2004-02-17 2009-03-24 Microsoft Corporation Anti-virus security information in an extensible markup language document
US7802085B2 (en) 2004-02-18 2010-09-21 Intel Corporation Apparatus and method for distributing private keys to an entity with minimal secret, unique information
US20050188203A1 (en) * 2004-02-19 2005-08-25 Jp Mobile Operating L.P. Method for packaging information with digitally signed software without breaking signature
FR2866772B1 (en) * 2004-02-20 2006-04-28 Viaccess Sa Method for matching of a receiver terminal with a plurality of access control cards
JP4366213B2 (en) * 2004-02-27 2009-11-18 キヤノン株式会社 Image processing apparatus, image output apparatus, image processing method, an image output method
US7500108B2 (en) * 2004-03-01 2009-03-03 Microsoft Corporation Metered execution of code
US8266177B1 (en) 2004-03-16 2012-09-11 Symantec Corporation Empirical database access adjustment
US7620949B2 (en) 2004-03-31 2009-11-17 Intel Corporation Method and apparatus for facilitating recognition of an open event window during operation of guest software in a virtual machine environment
US7287159B2 (en) * 2004-04-01 2007-10-23 Shieldip, Inc. Detection and identification methods for software
US9172679B1 (en) 2004-04-14 2015-10-27 Sprint Spectrum L.P. Secure intermediation system and method
US7853782B1 (en) 2004-04-14 2010-12-14 Sprint Spectrum L.P. Secure intermediation system and method
US7484107B2 (en) * 2004-04-15 2009-01-27 International Business Machines Corporation Method for selective encryption within documents
US7904895B1 (en) 2004-04-21 2011-03-08 Hewlett-Packard Develpment Company, L.P. Firmware update in electronic devices employing update agent in a flash memory card
US7593532B2 (en) * 2004-04-22 2009-09-22 Netapp, Inc. Management of the retention and/or discarding of stored data
KR100680576B1 (en) * 2004-04-22 2007-02-08 노바텍 마이크로일렉트로닉스 코포레이션 Data transferring method
US7870386B2 (en) * 2004-04-29 2011-01-11 International Business Machines Corporation Method for permanent decryption of selected sections of an encrypted document
CA2564285C (en) 2004-04-30 2014-07-08 Research In Motion Limited System and method of owner application control of electronic devices
US8271390B2 (en) * 2004-06-14 2012-09-18 Nokia Corporation Digital rights management (DRM) license manager
US20050282607A1 (en) * 2004-06-21 2005-12-22 Michael Gauselmann Game for a gaming device that changes automatically over time
US7765404B2 (en) * 2004-06-29 2010-07-27 Nokia Corporation Providing content in a communication system
US7685639B1 (en) 2004-06-29 2010-03-23 Symantec Corporation Using inserted e-mail headers to enforce a security policy
CN100580611C (en) 2004-06-30 2010-01-13 松下电器产业株式会社 Program execution device and program execution method
JP2006031357A (en) * 2004-07-15 2006-02-02 Hitachi Maxell Ltd Transmission system for handwritten information
US7413113B1 (en) 2004-07-28 2008-08-19 Sprint Communications Company L.P. Context-based card selection device
WO2007001329A3 (en) 2004-07-29 2009-04-16 Infoassure Inc Cryptographic key management
US8904458B2 (en) 2004-07-29 2014-12-02 At&T Intellectual Property I, L.P. System and method for pre-caching a first portion of a video file on a set-top box
US8584257B2 (en) 2004-08-10 2013-11-12 At&T Intellectual Property I, L.P. Method and interface for video content acquisition security on a set-top box
GB2417592B (en) 2004-08-13 2006-07-26 Ingenia Technology Ltd Authenticity verification of articles
US7458102B2 (en) * 2004-08-17 2008-11-25 Emc Corporation Information security architecture for remote access control using non-bidirectional protocols
US8526940B1 (en) 2004-08-17 2013-09-03 Palm, Inc. Centralized rules repository for smart phone customer care
WO2006023599A3 (en) * 2004-08-19 2006-04-06 Thomas Meredith Method of providing cash and cash equivalent for electronic transactions
WO2006026056A1 (en) * 2004-08-31 2006-03-09 Matsushita Electric Industrial Co., Ltd. Enforcing a drm / ipmp agreement in a multimedia content distribution network
US7512973B1 (en) 2004-09-08 2009-03-31 Sprint Spectrum L.P. Wireless-access-provider intermediation to facilliate digital rights management for third party hosted content
US8312431B1 (en) * 2004-09-17 2012-11-13 Oracle America, Inc. System and computer readable medium for verifying access to signed ELF objects
US7707405B1 (en) 2004-09-21 2010-04-27 Avaya Inc. Secure installation activation
US9609279B2 (en) * 2004-09-24 2017-03-28 Google Inc. Method and system for providing secure CODECS
US7840962B2 (en) 2004-09-30 2010-11-23 Intel Corporation System and method for controlling switching between VMM and VM using enabling value of VMM timer indicator and VMM timer value having a specified time
US8229858B1 (en) 2004-09-30 2012-07-24 Avaya Inc. Generation of enterprise-wide licenses in a customer environment
US7747851B1 (en) 2004-09-30 2010-06-29 Avaya Inc. Certificate distribution via license files
US8086261B2 (en) 2004-10-07 2011-12-27 At&T Intellectual Property I, L.P. System and method for providing digital network access and digital broadcast services using combined channels on a single physical medium to the customer premises
US8224725B2 (en) 2004-10-14 2012-07-17 Google Inc. Escrowing digital property in a secure information vault
US8347078B2 (en) 2004-10-18 2013-01-01 Microsoft Corporation Device certificate individualization
KR100628655B1 (en) * 2004-10-20 2006-09-26 (주)잉카엔트웍스 Method and system for exchanging contents between different DRM devices
US8621597B1 (en) * 2004-10-22 2013-12-31 Xilinx, Inc. Apparatus and method for automatic self-erasing of programmable logic devices
US8266438B2 (en) 2004-10-25 2012-09-11 Security First Corp. Secure data parser method and system
US8146078B2 (en) 2004-10-29 2012-03-27 Intel Corporation Timer offsetting mechanism in a virtual machine environment
US7600011B1 (en) 2004-11-04 2009-10-06 Sprint Spectrum L.P. Use of a domain name server to direct web communications to an intermediation platform
US20060107326A1 (en) * 2004-11-12 2006-05-18 Demartini Thomas Method, system, and device for verifying authorized issuance of a rights expression
US8336085B2 (en) 2004-11-15 2012-12-18 Microsoft Corporation Tuning product policy using observed evidence of customer behavior
US8176564B2 (en) 2004-11-15 2012-05-08 Microsoft Corporation Special PC mode entered upon detection of undesired state
US8660961B2 (en) 2004-11-18 2014-02-25 Contentguard Holdings, Inc. Method, system, and device for license-centric content consumption
US20060106726A1 (en) * 2004-11-18 2006-05-18 Contentguard Holdings, Inc. Method, system, and device for license-centric content consumption
US7874000B1 (en) 2004-11-22 2011-01-18 Symantec Corporation Reducing false positives generated by a database intrusion detection system
US20060112015A1 (en) * 2004-11-24 2006-05-25 Contentguard Holdings, Inc. Method, system, and device for handling creation of derivative works and for adapting rights to derivative works
US8924728B2 (en) 2004-11-30 2014-12-30 Intel Corporation Apparatus and method for establishing a secure session with a device without exposing privacy-sensitive information
US7716714B2 (en) 2004-12-01 2010-05-11 At&T Intellectual Property I, L.P. System and method for recording television content at a set top box
US8434116B2 (en) 2004-12-01 2013-04-30 At&T Intellectual Property I, L.P. Device, system, and method for managing television tuners
US7904706B2 (en) * 2004-12-01 2011-03-08 Innovation First, Inc. System and method for processing encrypted source code updates
US7474359B2 (en) 2004-12-06 2009-01-06 At&T Intellectual Properties I, L.P. System and method of displaying a video stream
US7734548B2 (en) * 2004-12-06 2010-06-08 At&T Intellectual Property, I,L.P. Methods, systems, and products for providing electronic media
US7895617B2 (en) 2004-12-15 2011-02-22 Sony Corporation Content substitution editor
US8041190B2 (en) * 2004-12-15 2011-10-18 Sony Corporation System and method for the creation, synchronization and delivery of alternate content
US7640590B1 (en) 2004-12-21 2009-12-29 Symantec Corporation Presentation of network source and executable characteristics
US7818585B2 (en) 2004-12-22 2010-10-19 Sap Aktiengesellschaft Secure license management
US8533777B2 (en) 2004-12-29 2013-09-10 Intel Corporation Mechanism to determine trust of out-of-band management agents
US20060156008A1 (en) * 2005-01-12 2006-07-13 Microsoft Corporation Last line of defense ensuring and enforcing sufficiently valid/current code
US20060161666A1 (en) * 2005-01-18 2006-07-20 International Business Machines Corporation Apparatus and method for controlling use of instant messaging content
US7436346B2 (en) 2005-01-20 2008-10-14 At&T Intellectual Property I, L.P. System, method and interface for controlling multiple electronic devices of a home entertainment system via a single control device
US7395405B2 (en) 2005-01-28 2008-07-01 Intel Corporation Method and apparatus for supporting address translation in a virtual machine environment
US7571328B2 (en) * 2005-02-01 2009-08-04 Microsoft Corporation System and method for distributing digital content over a network
US7307574B2 (en) 2005-02-02 2007-12-11 Sbc Knowledge Ventures, Lp Remote control, apparatus, system and methods of using the same
US7890428B2 (en) 2005-02-04 2011-02-15 Microsoft Corporation Flexible licensing architecture for licensing digital application
US20080015999A1 (en) * 2005-02-04 2008-01-17 Widevine Technologies, Inc. Securely ingesting encrypted content into content servers
US7998287B2 (en) * 2005-02-10 2011-08-16 Cabot Corporation Tantalum sputtering target and method of fabrication
US8214859B2 (en) 2005-02-14 2012-07-03 At&T Intellectual Property I, L.P. Automatic switching between high definition and standard definition IP television signals
US7840564B2 (en) * 2005-02-16 2010-11-23 Ebrary System and method for automatic anthology creation using document aspects
US20070174271A1 (en) * 2005-02-18 2007-07-26 Ulf Mattsson Database system with second preprocessor and method for accessing a database
JP4717464B2 (en) * 2005-02-18 2011-07-06 キヤノン株式会社 The information processing apparatus, information processing method, and program
US7607020B2 (en) * 2005-03-01 2009-10-20 Adobe Systems Incorporated Communication with an external source application
US7444331B1 (en) 2005-03-02 2008-10-28 Symantec Corporation Detecting code injection attacks against databases
US7549051B2 (en) 2005-03-10 2009-06-16 Microsoft Corporation Long-life digital certification for publishing long-life digital content or the like in content rights management system or the like
US8539587B2 (en) 2005-03-22 2013-09-17 Hewlett-Packard Development Company, L.P. Methods, devices and data structures for trusted data
US7730215B1 (en) 2005-04-08 2010-06-01 Symantec Corporation Detecting entry-portal-only network connections
US20060253572A1 (en) * 2005-04-13 2006-11-09 Osmani Gomez Method and system for management of an electronic mentoring program
US8738536B2 (en) 2005-04-14 2014-05-27 Microsoft Corporation Licensing content for use on portable device
US7856404B2 (en) 2005-04-14 2010-12-21 Microsoft Corporation Playlist burning in rights-management context
US8725646B2 (en) 2005-04-15 2014-05-13 Microsoft Corporation Output protection levels
US8290874B2 (en) 2005-04-22 2012-10-16 Microsoft Corporation Rights management system for streamed multimedia content
US9363481B2 (en) 2005-04-22 2016-06-07 Microsoft Technology Licensing, Llc Protected media pipeline
US7647621B2 (en) * 2005-04-22 2010-01-12 Mcafee, Inc. System, method and computer program product for applying electronic policies
US9507919B2 (en) 2005-04-22 2016-11-29 Microsoft Technology Licensing, Llc Rights management system for streamed multimedia content
US9436804B2 (en) 2005-04-22 2016-09-06 Microsoft Technology Licensing, Llc Establishing a unique session key using a hardware functionality scan
US20060242406A1 (en) 2005-04-22 2006-10-26 Microsoft Corporation Protected computing environment
US7693280B2 (en) 2005-04-22 2010-04-06 Microsoft Corporation Rights management system for streamed multimedia content
US8091142B2 (en) 2005-04-26 2012-01-03 Microsoft Corporation Supplementary trust model for software licensing/commercial digital distribution policy
US8438645B2 (en) * 2005-04-27 2013-05-07 Microsoft Corporation Secure clock with grace periods
US20060248573A1 (en) * 2005-04-28 2006-11-02 Content Guard Holdings, Inc. System and method for developing and using trusted policy based on a social model
US8046374B1 (en) 2005-05-06 2011-10-25 Symantec Corporation Automatic training of a database intrusion detection system
US7558796B1 (en) 2005-05-19 2009-07-07 Symantec Corporation Determining origins of queries for a database intrusion detection system
US7634811B1 (en) 2005-05-20 2009-12-15 Symantec Corporation Validation of secure sockets layer communications
US20060265758A1 (en) 2005-05-20 2006-11-23 Microsoft Corporation Extensible media rights
US8054849B2 (en) 2005-05-27 2011-11-08 At&T Intellectual Property I, L.P. System and method of managing video content streams
US8353046B2 (en) 2005-06-08 2013-01-08 Microsoft Corporation System and method for delivery of a modular operating system
US7730532B1 (en) 2005-06-13 2010-06-01 Symantec Corporation Automatic tracking cookie detection
US8893199B2 (en) 2005-06-22 2014-11-18 At&T Intellectual Property I, L.P. System and method of managing video content delivery
US7908627B2 (en) 2005-06-22 2011-03-15 At&T Intellectual Property I, L.P. System and method to provide a unified video signal for diverse receiving platforms
CA2510647A1 (en) * 2005-06-23 2006-12-23 Cognos Incorporated Signing of web request
US8635659B2 (en) 2005-06-24 2014-01-21 At&T Intellectual Property I, L.P. Audio receiver modular card and method thereof
US8282476B2 (en) 2005-06-24 2012-10-09 At&T Intellectual Property I, L.P. Multimedia-based video game distribution
US8365218B2 (en) 2005-06-24 2013-01-29 At&T Intellectual Property I, L.P. Networked television and method thereof
US9215512B2 (en) 2007-04-27 2015-12-15 Invention Science Fund I, Llc Implementation of media content alteration
US9583141B2 (en) 2005-07-01 2017-02-28 Invention Science Fund I, Llc Implementing audio substitution options in media works
US9426387B2 (en) 2005-07-01 2016-08-23 Invention Science Fund I, Llc Image anonymization
US9230601B2 (en) * 2005-07-01 2016-01-05 Invention Science Fund I, Llc Media markup system for content alteration in derivative works
US9065979B2 (en) 2005-07-01 2015-06-23 The Invention Science Fund I, Llc Promotional placement in media works
US7433869B2 (en) 2005-07-01 2008-10-07 Ebrary, Inc. Method and apparatus for document clustering and document sketching
US8732087B2 (en) 2005-07-01 2014-05-20 The Invention Science Fund I, Llc Authorization for media content alteration
US20070005651A1 (en) 2005-07-01 2007-01-04 Searete Llc, A Limited Liability Corporation Of The State Of Delaware Restoring modified assets
US8910033B2 (en) 2005-07-01 2014-12-09 The Invention Science Fund I, Llc Implementing group content substitution in media works
US9092928B2 (en) 2005-07-01 2015-07-28 The Invention Science Fund I, Llc Implementing group content substitution in media works
US7774361B1 (en) 2005-07-08 2010-08-10 Symantec Corporation Effective aggregation and presentation of database intrusion incidents
US8190688B2 (en) 2005-07-11 2012-05-29 At&T Intellectual Property I, Lp System and method of transmitting photographs from a set top box
US7690037B1 (en) 2005-07-13 2010-03-30 Symantec Corporation Filtering training data for machine learning
US7665146B2 (en) * 2005-07-14 2010-02-16 Research In Motion Limited Password methods and systems for use on a mobile device
US7873102B2 (en) 2005-07-27 2011-01-18 At&T Intellectual Property I, Lp Video quality testing by encoding aggregated clips
KR101223204B1 (en) * 2005-07-27 2013-01-17 인제니아 홀딩스 리미티드 Verification of authenticity
US7813778B2 (en) * 2005-07-29 2010-10-12 Spectros Corporation Implantable tissue ischemia sensor
CA2625371C (en) * 2005-08-24 2012-06-26 Pioneer Hi-Bred International, Inc. Compositions providing tolerance to multiple herbicides and methods of use thereof
JP5051872B2 (en) * 2005-09-01 2012-10-17 キヤノン株式会社 Display system and a control method thereof
US8898452B2 (en) * 2005-09-08 2014-11-25 Netapp, Inc. Protocol translation
US7814023B1 (en) * 2005-09-08 2010-10-12 Avaya Inc. Secure download manager
US7883420B2 (en) * 2005-09-12 2011-02-08 Mattel, Inc. Video game systems
WO2007033302A3 (en) * 2005-09-12 2009-04-23 Mattel Inc Video game media
US20070067643A1 (en) * 2005-09-21 2007-03-22 Widevine Technologies, Inc. System and method for software tamper detection
GB2430523B (en) * 2005-09-22 2010-02-17 Software 2000 Ltd Managing user permissions in a computer system
US7817608B2 (en) * 2005-09-23 2010-10-19 Widevine Technologies, Inc. Transitioning to secure IP communications for encoding, encapsulating, and encrypting data
US8065733B2 (en) * 2005-09-23 2011-11-22 Google, Inc. Method for evolving detectors to detect malign behavior in an artificial immune system
WO2007038245A3 (en) 2005-09-23 2007-11-15 Widevine Technologies Inc Method for evolving detectors to detect malign behavior in an artificial immune system
US7992085B2 (en) 2005-09-26 2011-08-02 Microsoft Corporation Lightweight reference user interface
US7788590B2 (en) 2005-09-26 2010-08-31 Microsoft Corporation Lightweight reference user interface
CN101278510B (en) * 2005-09-29 2013-03-27 康坦夹德控股股份有限公司 System and method for digital rights management using advanced copy with issue rights, and managed copy tokens
US8874477B2 (en) 2005-10-04 2014-10-28 Steven Mark Hoffberg Multifactorial optimization system and method
US20070094594A1 (en) * 2005-10-06 2007-04-26 Celcorp, Inc. Redaction system, method and computer program product
US20090089663A1 (en) * 2005-10-06 2009-04-02 Celcorp, Inc. Document management workflow for redacted documents
US20070083467A1 (en) * 2005-10-10 2007-04-12 Apple Computer, Inc. Partial encryption techniques for media data
KR100763193B1 (en) * 2005-10-13 2007-10-04 삼성전자주식회사 System and Method for providing DRM license
US7826611B2 (en) * 2005-10-17 2010-11-02 Palo Alto Research Center Incorporated System and method for exchanging a transformed message with enhanced privacy
US7720767B2 (en) * 2005-10-24 2010-05-18 Contentguard Holdings, Inc. Method and system to support dynamic rights and resources sharing
US20070101156A1 (en) * 2005-10-31 2007-05-03 Manuel Novoa Methods and systems for associating an embedded security chip with a computer
US20070098175A1 (en) * 2005-10-31 2007-05-03 Systech Corporation Security enabler device and method for securing data communications
US8051478B1 (en) 2005-11-07 2011-11-01 Symantec Corporation Secure browser
US8272064B2 (en) * 2005-11-16 2012-09-18 The Boeing Company Automated rule generation for a secure downgrader
CN101401341B (en) 2005-11-18 2016-06-01 安全第一公司 Data analysis method and system security
US7934259B1 (en) 2005-11-29 2011-04-26 Symantec Corporation Stealth threat detection
US8689016B2 (en) 2005-12-02 2014-04-01 Google Inc. Tamper prevention and detection for video provided over a network to a client
US8078788B2 (en) 2005-12-08 2011-12-13 Sandisk Technologies Inc. Media card command pass through methods
US8456653B2 (en) * 2005-12-12 2013-06-04 Canon Kabushiki Kaisha Data processing apparatus for producing print job data whose authority is managed by external server, and image processing apparatus for printing a print job whose authority is managed by external server
US8205243B2 (en) * 2005-12-16 2012-06-19 Wasilewski Anthony J Control of enhanced application features via a conditional access system
US7752664B1 (en) 2005-12-19 2010-07-06 Symantec Corporation Using domain name service resolution queries to combat spyware
US8392999B2 (en) * 2005-12-19 2013-03-05 White Cyber Knight Ltd. Apparatus and methods for assessing and maintaining security of a computerized system under development
US7877800B1 (en) 2005-12-19 2011-01-25 Symantec Corporation Preventing fraudulent misdirection of affiliate program cookie tracking
US8181220B2 (en) * 2005-12-19 2012-05-15 Adobe Systems Incorporated Method and apparatus for digital rights management policies
US20070143849A1 (en) * 2005-12-19 2007-06-21 Eyal Adar Method and a software system for end-to-end security assessment for security and CIP professionals
WO2007072044A1 (en) 2005-12-23 2007-06-28 Ingenia Holdings (Uk) Limited Optical authentication
US8526612B2 (en) * 2006-01-06 2013-09-03 Google Inc. Selective and persistent application level encryption for video provided to a client
US7949124B2 (en) * 2006-01-11 2011-05-24 Canon Kabushiki Kaisha Information processing apparatus, control method for the same, program and storage medium
GB0600828D0 (en) * 2006-01-16 2006-02-22 Ingenia Holdings Uk Ltd Verification of performance attributes of packaged integrated circuits
US20070180231A1 (en) * 2006-01-31 2007-08-02 Widevine Technologies, Inc. Preventing entitlement management message (EMM) filter attacks
US9654456B2 (en) * 2006-02-16 2017-05-16 Oracle International Corporation Service level digital rights management support in a multi-content aggregation and delivery system
US7764701B1 (en) 2006-02-22 2010-07-27 Qurio Holdings, Inc. Methods, systems, and products for classifying peer systems
US7779004B1 (en) 2006-02-22 2010-08-17 Qurio Holdings, Inc. Methods, systems, and products for characterizing target systems
US20070245032A1 (en) * 2006-02-24 2007-10-18 Parent Approval Llc System and method of a data blocker based on local monitoring of a soliciting website
EP1826944B1 (en) 2006-02-27 2009-05-13 Research In Motion Limited Method of customizing a standardized IT policy
US7555464B2 (en) * 2006-03-01 2009-06-30 Sony Corporation Multiple DRM management
US7814116B2 (en) * 2006-03-16 2010-10-12 Hauser Eduardo A Method and system for creating customized news digests
US8014530B2 (en) 2006-03-22 2011-09-06 Intel Corporation Method and apparatus for authenticated, recoverable key distribution with no database secrets
US7873999B1 (en) 2006-03-31 2011-01-18 Symantec Corporation Customized alerting of users to probable data theft
US8300798B1 (en) 2006-04-03 2012-10-30 Wai Wu Intelligent communication routing system and method
US20070255659A1 (en) * 2006-05-01 2007-11-01 Wei Yen System and method for DRM translation
US7694154B2 (en) * 2006-05-12 2010-04-06 Oracle International Corporation Method and apparatus for securely executing a background process
US7992203B2 (en) 2006-05-24 2011-08-02 Red Hat, Inc. Methods and systems for secure shared smartcard access
US8171307B1 (en) 2006-05-26 2012-05-01 Netapp, Inc. Background encryption of disks in a large cluster
US8800008B2 (en) 2006-06-01 2014-08-05 Intellectual Ventures Ii Llc Data access control systems and methods
US8098829B2 (en) * 2006-06-06 2012-01-17 Red Hat, Inc. Methods and systems for secure key delivery
US20080022088A1 (en) * 2006-06-06 2008-01-24 Red Hat, Inc. Methods and systems for key escrow
US8332637B2 (en) 2006-06-06 2012-12-11 Red Hat, Inc. Methods and systems for nonce generation in a token
US8180741B2 (en) 2006-06-06 2012-05-15 Red Hat, Inc. Methods and systems for providing data objects on a token
US7822209B2 (en) 2006-06-06 2010-10-26 Red Hat, Inc. Methods and systems for key recovery for a token
US8364952B2 (en) 2006-06-06 2013-01-29 Red Hat, Inc. Methods and system for a key recovery plan
US8495380B2 (en) 2006-06-06 2013-07-23 Red Hat, Inc. Methods and systems for server-side key generation
US9769158B2 (en) 2006-06-07 2017-09-19 Red Hat, Inc. Guided enrollment and login for token users
US8099765B2 (en) 2006-06-07 2012-01-17 Red Hat, Inc. Methods and systems for remote password reset using an authentication credential managed by a third party
US8412927B2 (en) * 2006-06-07 2013-04-02 Red Hat, Inc. Profile framework for token processing system
US8707024B2 (en) * 2006-06-07 2014-04-22 Red Hat, Inc. Methods and systems for managing identity management security domains
US8589695B2 (en) 2006-06-07 2013-11-19 Red Hat, Inc. Methods and systems for entropy collection for server-side key generation
US8209676B2 (en) 2006-06-08 2012-06-26 Hewlett-Packard Development Company, L.P. Device management in a network
GB0611618D0 (en) * 2006-06-12 2006-07-19 Ingenia Technology Ltd Scanner authentication
US20070294253A1 (en) * 2006-06-20 2007-12-20 Lyle Strub Secure domain information protection apparatus and methods
US8332947B1 (en) 2006-06-27 2012-12-11 Symantec Corporation Security threat reporting in light of local security tools
EP2047420A4 (en) 2006-07-27 2009-11-18 Hewlett Packard Development Co User experience and dependency management in a mobile device
US20080216142A1 (en) * 2006-08-17 2008-09-04 Goldberg Brett M System and method of digital media distribution
US8806219B2 (en) 2006-08-23 2014-08-12 Red Hat, Inc. Time-based function back-off
US8787566B2 (en) 2006-08-23 2014-07-22 Red Hat, Inc. Strong encryption
US8397083B1 (en) 2006-08-23 2013-03-12 Netapp, Inc. System and method for efficiently deleting a file from secure storage served by a storage system
US8181011B1 (en) 2006-08-23 2012-05-15 Netapp, Inc. iSCSI name forwarding technique
US8977844B2 (en) 2006-08-31 2015-03-10 Red Hat, Inc. Smartcard formation with authentication keys
US8074265B2 (en) 2006-08-31 2011-12-06 Red Hat, Inc. Methods and systems for verifying a location factor associated with a token
US8356342B2 (en) 2006-08-31 2013-01-15 Red Hat, Inc. Method and system for issuing a kill sequence for a token
US9038154B2 (en) 2006-08-31 2015-05-19 Red Hat, Inc. Token Registration
US7873988B1 (en) 2006-09-06 2011-01-18 Qurio Holdings, Inc. System and method for rights propagation and license management in conjunction with distribution of digital content in a social network
US7992171B2 (en) 2006-09-06 2011-08-02 Qurio Holdings, Inc. System and method for controlled viral distribution of digital content in a social network
US20080065552A1 (en) * 2006-09-13 2008-03-13 Gidon Elazar Marketplace for Transferring Licensed Digital Content
US8839005B2 (en) * 2006-09-13 2014-09-16 Sandisk Technologies Inc. Apparatus for transferring licensed digital content between users
US7971234B1 (en) 2006-09-15 2011-06-28 Netapp, Inc. Method and apparatus for offline cryptographic key establishment
US8192474B2 (en) 2006-09-26 2012-06-05 Zeltiq Aesthetics, Inc. Tissue treatment methods
US9132031B2 (en) 2006-09-26 2015-09-15 Zeltiq Aesthetics, Inc. Cooling device having a plurality of controllable cooling elements to provide a predetermined cooling profile
US7801971B1 (en) 2006-09-26 2010-09-21 Qurio Holdings, Inc. Systems and methods for discovering, creating, using, and managing social network circuits
US7925592B1 (en) 2006-09-27 2011-04-12 Qurio Holdings, Inc. System and method of using a proxy server to manage lazy content distribution in a social network
US7995759B1 (en) 2006-09-28 2011-08-09 Netapp, Inc. System and method for parallel compression of a single data stream
US8554827B2 (en) 2006-09-29 2013-10-08 Qurio Holdings, Inc. Virtual peer for a content sharing system
US8190905B1 (en) 2006-09-29 2012-05-29 Netapp, Inc. Authorizing administrative operations using a split knowledge protocol
US7782866B1 (en) 2006-09-29 2010-08-24 Qurio Holdings, Inc. Virtual peer in a peer-to-peer network
US8042155B1 (en) 2006-09-29 2011-10-18 Netapp, Inc. System and method for generating a single use password based on a challenge/response protocol
US8245050B1 (en) 2006-09-29 2012-08-14 Netapp, Inc. System and method for initial key establishment using a split knowledge protocol
US7624276B2 (en) * 2006-10-16 2009-11-24 Broadon Communications Corp. Secure device authentication system and method
US20080098237A1 (en) * 2006-10-20 2008-04-24 Dung Trung T Secure e-mail services system and methods implementing inversion of security control
WO2008127309A3 (en) * 2006-11-07 2009-02-19 Security First Corp Systems and methods for distributing and securing data
US20080176194A1 (en) 2006-11-08 2008-07-24 Nina Zolt System for developing literacy skills using loosely coupled tools in a self-directed learning process within a collaborative social network
JP5393471B2 (en) * 2006-11-08 2014-01-22 イーパルズ インコーポレイテッド Dynamic characteristics of nodes in a semantic network
US7613915B2 (en) 2006-11-09 2009-11-03 BroadOn Communications Corp Method for programming on-chip non-volatile memory in a secure processor, and a device so programmed
US8200961B2 (en) * 2006-11-19 2012-06-12 Igware, Inc. Securing a flash memory block in a secure device system and method
US7853019B1 (en) 2006-11-30 2010-12-14 Netapp, Inc. Tape failover across a cluster
US8693690B2 (en) 2006-12-04 2014-04-08 Red Hat, Inc. Organizing an extensible table for storing cryptographic objects
CA2670597A1 (en) 2006-12-05 2008-06-12 Don Martin Improved tape backup method using a secure data parser
CA2671735A1 (en) * 2006-12-06 2008-06-12 Marion Darnell Jones System of fractional ownership of intellectual property
US7886334B1 (en) 2006-12-11 2011-02-08 Qurio Holdings, Inc. System and method for social network trust assessment
US7730216B1 (en) 2006-12-14 2010-06-01 Qurio Holdings, Inc. System and method of sharing content among multiple social network nodes using an aggregation node
US7698380B1 (en) 2006-12-14 2010-04-13 Qurio Holdings, Inc. System and method of optimizing social networks and user levels based on prior network interactions
US8548918B1 (en)