CN102088443B - Method and system for subscribing digital periodical with copyright protection - Google Patents
Method and system for subscribing digital periodical with copyright protection Download PDFInfo
- Publication number
- CN102088443B CN102088443B CN200910241440.5A CN200910241440A CN102088443B CN 102088443 B CN102088443 B CN 102088443B CN 200910241440 A CN200910241440 A CN 200910241440A CN 102088443 B CN102088443 B CN 102088443B
- Authority
- CN
- China
- Prior art keywords
- information
- key
- client
- hardware
- license file
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000000034 method Methods 0.000 title claims abstract description 58
- 230000001681 protective effect Effects 0.000 claims description 82
- 238000013475 authorization Methods 0.000 claims description 43
- 238000012545 processing Methods 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 238000000605 extraction Methods 0.000 claims description 4
- 238000011084 recovery Methods 0.000 claims description 3
- 238000007639 printing Methods 0.000 claims description 2
- 230000003044 adaptive effect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 230000006870 function Effects 0.000 description 5
- 238000012217 deletion Methods 0.000 description 2
- 230000037430 deletion Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012913 prioritisation Methods 0.000 description 1
Landscapes
- Storage Device Security (AREA)
- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
Abstract
The present invention provides a method for subscribing a digital periodical with copyright protection, and a system thereof. Wherein the method comprises the steps as follows: a server takes hardware information of each registered client as an encryption key to perform encryption on a protection key used for encrypting digital periodical content; the server combines the encryption information with corresponding prompt information to generate a license, then merges a plurality of licenses to generate a license file; on each issue date, the server pushes the license file and the encrypted digital periodical content together to the client; and the client receiving the license file performs decryption on the encrypted digital periodical content according to the license file, the hardware information as well as the corresponding prompt information. The license file generated by the method in the present invention allows that the encrypted digital periodical content only can be obtained on the specified hardware equipment, and one license file can be used on a plurality of hardware equipment registered by a subscription user, in addition, the license file still can be normally used when the hardware equipment changes partially, which is greatly convenient for users.
Description
Technical field
The present invention relates to digital journals field, be specifically related to a kind of subscribing digital periodical method and system with copyright protection.
Background technology
The major way of current subscribing digital periodical, is periodical content is made a file do not encrypted (as pdf), is then distributed on the computer of booking reader as annex by email, cannot realizes the copyright protection to digital content.And existing digital copyright protection technology, relate generally to the protection of the separate editions such as e-book, and be all that the mode being undertaken downloading by website is carried out, the serial publications that digital journals is such is used and inconvenience.
Be in the Chinese patent " method and system for subscription digital managing entitlement " of 02815591.2 at application number, propose a kind of management method that can be used for subscribing digital periodical.In the method; store the subscription inventory comprising the PKI relevant to booking reader; license server is by checking whether the PKI of booking reader submits licence on subscription inventory, defines the use right relevant to multiple protected content and service condition and state variable etc. in licence.After obtaining licence from license server; point of departure (such as; businessman) by its pre-packaged together with multiple protected content; send to booking reader; thus booking reader can visit multiple protected content according to the use right defined in licence and service condition thereof, and need not the discrete actuation each licence relevant to each protected content.But, because this method generates licence, that is, for each booking reader generates licence to reach the control to subscribed content, so uncontrollable subscribed content only uses on multiple hardware devices of specifying by the PKI according to each booking reader.That is, this method mainly according to the information relevant to booking reader (such as, territory account information), instead of the information of its multiple stage hardware device, as long as just allow access so log in by territory account on any one hardware device, and can not control to be only limitted to access on the hardware device of specifying.In brief, this mode can only realize the control to people, and can not realize the control to hardware device, particularly to the situation of the control of booking reader's multiple devices.
Summary of the invention
In order to solve the problem; the invention provides a kind of subscribing digital periodical method and system with copyright protection; thus avoid by the problem arbitrarily forwarded in digital journals distribution process, and the multiple hardware devices only can specified booking reader obtain the digital journals content of encryption.
In order to realize above object, the subscribing digital periodical method of band copyright protection provided by the invention comprises the following steps: step 1, booking reader in its client to server registration and subscription digital periodical, server receives log-on message and the subscription information of multiple clients that booking reader registers, described log-on message comprises the hardware information of client device and corresponding information thereof, described subscription information comprise booking reader's information, subscription journal title and subscribe to the start-stop phase; Step 2, server by utilizing Protective Key are encrypted the digital journals content of subscribing to, and for the booking reader of issue date within its subscription start-stop phase, generate license file according to Protective Key with from the hardware information the log-on message that its client receives and corresponding information thereof, then the digital journals content of license file and encryption is pushed to the client of this booking reader; Be decrypted according to the hardware information used when this license file and registration and the digital journals content of corresponding information to encryption thereof with step 3, the client of digital journals content that receives license file and encryption.
Step 1 is performed: booking reader is registration also subscription digital periodical in its multiple client respectively by following two kinds of modes, these clients gather the hardware information of respective equipment and corresponding information thereof respectively, and this hardware information and corresponding information thereof are sent to server together with subscription information; Or, booking reader registers and subscription digital periodical in an one client, the hardware information of other client device that the hardware information that this client gathers equipment of itself is registered with this booking reader and the information corresponding to these hardware informations, and these hardware informations and corresponding information thereof are sent to server together with subscription information.
In step 2, the step of server generation license file comprises: utilize the hardware information of each client of registration to generate encryption key and be encrypted Protective Key, form an enciphered message; This enciphered message and corresponding information thereof are generated an authorization together; The multiple authorizations generated are merged generation license file.Wherein, server can utilize the hardware information of Message Digest 5 to client device to convert, and the information obtained after utilizing conversion generates encryption key.
Step 3 comprises: the information according to using during registration finds corresponding authorization in license file; Utilize the hardware information generating solution decryption key of this client to be decrypted the enciphered message in this authorization, obtain Protective Key; The digital journals content of Protective Key to encryption is utilized to be decrypted.Wherein, client can utilize the hardware information of Message Digest 5 to client device to convert, and the information generating solution decryption key obtained after utilizing conversion is decrypted.
Preferably, the present invention is also by the equipment of following methods Delete superfluous: booking reader sends the request of sweep equipment from any one its chartered multiple client to server, and this removal request comprises the hardware information of the equipment sending this removal request and the information of corresponding information and equipment to be deleted thereof.Server is after receiving removal request; the hardware information of equipment to be deleted and corresponding information thereof is deleted from original log-on message; thus obtain the log-on message of renewal, and the log-on message of this renewal and described Protective Key is utilized to generate license file.
Preferably, device registration is increased: booking reader sends the request of increase equipment from any one its chartered multiple client to server by following methods, this increase request comprises the hardware information of the equipment sending this increase request and the hardware information of corresponding information and equipment to be increased thereof and corresponding information thereof, and the hardware information of described equipment to be increased and corresponding information thereof are by the equipment collection sending this increase request.Server is after receiving increase request; the hardware information of equipment to be increased and corresponding information thereof is increased in original log-on message; thus obtain the log-on message of renewal, and the log-on message of this renewal and described Protective Key is utilized to generate license file.More preferably, the present invention is by secret sharing scheme, in conjunction with the hardware configuration situation of subscriber equipment, the fractional hardware adopting the method for digital journals and hardware binding with hardware adaptive mechanism to ensure in hardware device configures when occurring to change still can normal occupancy permit file.
Correspondingly, a kind of subscribing digital periodical system with copyright protection provided by the invention comprises: multiple client, for booking reader thereon to server registration and subscription digital periodical, then log-on message and subscription information are sent to server, when receiving the digital journals content of license file and encryption from server, according to the hardware information used when this license file and registration and corresponding information thereof, the digital journals content to encryption is decrypted; And server; for utilizing Protective Key, the digital journals content of subscribing to is encrypted; and for the booking reader of issue date within its subscription start-stop phase; generate license file according to Protective Key with from the hardware information the log-on message that its client receives and corresponding information thereof, then the digital journals content of license file and encryption is pushed to the client of this booking reader.
In the present invention; the hardware information of server by utilizing booking reader registration is encrypted the Protective Key for being encrypted digital periodical content as encryption key; and its corresponding for the Protective Key of encryption information is generated corresponding authorization together; thus make to obtain subscribed content in the issue date in multiple clients that the booking reader that it was subscribed in start-stop phase specifies, realize the control to hardware device.In addition, multiple authorization is combined generation license file by server, thus make to share this license file on multiple hardware devices of booking reader's registration, and the fractional hardware configuration in hardware device still can normal occupancy permit file when occurring to change, and greatly facilitates user.In addition, the present invention also can delete or increase equipment in chartered client, improves the flexibility of subscribing digital periodical.
Accompanying drawing explanation
Fig. 1 is the structural representation of the subscribing digital periodical system of band copyright protection according to first embodiment of the invention;
Fig. 2 is the schematic flow sheet of the subscribing digital periodical method of band copyright protection according to first embodiment of the invention;
Fig. 3 is the concrete structure schematic diagram of the server in system shown in Figure 1;
Fig. 4 is the concrete structure schematic diagram of the client in system shown in Figure 1;
Fig. 5 is the structural representation of the subscribing digital periodical system of band copyright protection second embodiment of the invention;
Fig. 6 is the schematic diagram of license file according to a particular embodiment of the invention.
Embodiment
The invention provides a kind of subscribing digital periodical method and system with copyright protection; for protecting in subscription and distribution process digital periodical content and controlling; avoid by the problem arbitrarily forwarded in digital journals distribution process, and use during multiple hardware devices that a license file is registered booking reader can be supported.
Below in conjunction with drawings and Examples, the present invention is described in detail.
(the first execution mode)
Fig. 1 is the structural representation of the subscribing digital periodical system of band copyright protection according to first embodiment of the invention.As shown in Figure 1, this system comprises: server 11 and multiple client 12A, multiple client 12B (and more client 12C, 12D ... not shown), wherein multiple client 12A belongs to same booking reader A, and multiple client 12B belongs to same booking reader B.Below, for being described alternately between client 12A and server 11.
Fig. 2 is the flow chart of the subscribing digital periodical method of band copyright protection according to first embodiment of the invention.As shown in Figure 2, the method comprises the following steps:
Step S201, booking reader's registration and subscription step
In this step, booking reader in its client to server registration and subscription digital periodical, log-on message and subscription information are sent to server by client, the hardware information of described log-on message client device and corresponding information thereof, described subscription information comprise booking reader's information, subscription journal title and subscribe to the start-stop phase.Server receives log-on message and the subscription information of multiple clients that booking reader registers.
Specifically, in the first execution mode of the present invention, booking reader A registers respectively and subscription digital periodical on multiple client 12A, comprises information of registered users, selectes the journal title of subscription and subscribe to the start-stop phase etc.Then, these client 12A extract the device name of client 12A (such as, computer name) as its corresponding information, and its hardware information is sent to server 11 with corresponding information as log-on message together with subscription information, as mentioned above, subscription information comprise booking reader's information, subscription journal title and subscribe to the start-stop phase.Or, user also can be allowed to input a name and to be referred to as the information corresponding to the hardware information of each client 12A.In order to make information corresponding one by one to the hardware information of each client 12A, if the information of registration repeats, such as device name repeats, then allow booking reader A to revise information, that is, re-enter a unduplicated title.
Step S203, server for encrypting and authorisation step
In this step; server by utilizing Protective Key is encrypted the digital journals content of subscribing to; and for the booking reader of issue date within its subscription start-stop phase; generate license file according to Protective Key with from the hardware information the log-on message that its client receives and corresponding information thereof, then the digital journals content of license file and encryption is pushed to the client of this booking reader.
Specifically, in the issue date of digital journals, server 11 uses key schedule, such as random key algorithm generates Protective Key, and utilize this Protective Key to be encrypted digital periodical content, then each booking reader is checked, if the current issue date subscribes within the start-stop phase at it, then generate license file according to Protective Key with from the hardware information the log-on message that multiple clients of this booking reader receive and corresponding information thereof, then the digital journals content of license file and encryption is pushed to multiple clients of this booking reader.Wherein, the step of server generation license file comprises further:
Utilize the hardware information of each client 12A of registration to generate encryption key to be encrypted Protective Key, form an enciphered message, wherein, the hardware information of Message Digest 5 to client can be utilized to convert, and the information obtained after utilizing conversion generate encryption key;
This enciphered message and corresponding information thereof are generated an authorization together;
The multiple authorizations generated are merged generation license file.
Step S205, client decrypts step
In this step, the client 12A receiving the digital journals content of license file and encryption is decrypted the digital journals content of encrypting according to the hardware information used when this license file and registration and corresponding information thereof.Specifically, this step comprises the following steps:
Information according to using during registration finds corresponding authorization in license file;
The hardware information generating solution decryption key of this client 12A is utilized to be decrypted the enciphered message in the authorization found, obtain Protective Key, wherein, when server 11 utilizes Message Digest 5 that the conversion of the hardware information of multiple client 12A is obtained encryption key, client 12A correspondingly utilizes Message Digest 5 to convert its hardware information, the information generating solution decryption key obtained after utilizing conversion;
The digital journals content of Protective Key to encryption utilizing deciphering to obtain is decrypted.
By this method for subscribing, booking reader regularly can receive the digital journals content of license file and band copyright protection on its multiple client devices of specifying, thus has not only ensured the interests of Periodical Press, but also can realize the control to hardware device.When booking reader needs to access digital periodical content at every turn; its client utilizes other name information of device name or the input used during registration from license file, to find corresponding authorization as information; and utilize the hardware information generating solution decryption key of this client device; enciphered message in this authorization is decrypted; thus acquisition Protective Key, then utilize this Protective Key to be decrypted digital periodical content.After deciphering, booking reader can use by off-line immediately, substantially increases the convenient degree that booking reader uses.
The solution resending application is all needed compared to each subscribed content that obtains, the present invention adopts subscription scheme, do not need to initiate request by client when waiting until distribution digital journals at every turn, but directly initiatively generate license file by server, and license file is pushed to multiple clients of booking reader's restriction, thus, the problem of Replay Attack can be avoided.
In addition, not only limit according to the license file of the present invention's generation on the several client devices only formulated booking reader and use, and this license file can be shared on this multiple client device, and each client need not be respectively generate multiple license file.Therefore, booking reader can obtain digital journals very simply and easily.
Fig. 3 and Fig. 4 is the concrete structure figure of the server and client side realizing method shown in Fig. 2 respectively.
As shown in Figure 3, server 11 specifically comprises: subscribe to processing unit 31, for receiving log-on message and subscription information from client, and log-on message and subscription information is sent to periodical to encrypt and granted unit 32; Periodical encryption and granted unit 32, for utilizing Protective Key, digital periodical content is encrypted, and for the booking reader of issue date within its subscription start-stop phase, generate license file according to Protective Key with from the hardware information the log-on message that its client receives and corresponding information thereof; With push unit 33, for the digital journals content of license file and encryption is pushed to client.
Wherein, periodical encryption and granted unit 32 comprise further: periodical content unit 321, for utilizing Protective Key to be encrypted digital periodical content, and Protective Key is sent to encryption key element 322, the digital journals content of encryption is sent to push unit 33; Encryption key element 322, for utilizing the hardware information generation encryption key from subscribing to processing unit 31 reception, the Protective Key received from periodical content unit 321 is encrypted, form an enciphered message, and this enciphered message is sent to license file generation unit 324, encryption key is sent to and subscribes to client-side information unit 323; Subscribe to client-side information unit 323, for generating the corresponding relation from subscribing to processing unit 31 information received and the encryption key received from encryption key element 322; License file generation unit 324, for utilizing from the corresponding relation of subscribing to the reception of client-side information unit 323, from subscribing to the information of processing unit 31 reception and generating an authorization from the enciphered message that encryption key element 322 receives, and the multiple authorizations generated are merged generation license file, then this license file is sent to push unit 33.Then, the digital journals content of license file and encryption is pushed to multiple client 12A of booking reader A by push unit 33.
As shown in Figure 4, client 12A specifically comprises: collecting unit 40, gathers the hardware information of this client 12A self and corresponding information thereof, and this hardware information and information are sent to registering unit 41 as a log-on message; Registering unit 41, subscription information and log-on message by this registering unit registration also subscription digital periodical, and are sent to server 11 by booking reader; Receiving element 42, for receiving the digital journals content of license file and the encryption pushed from server 11, and sends to Protective Key unit 43 by license file, the digital journals content of encryption is sent to decrypting digital periodical unit 44; Protective Key unit 43, for finding corresponding authorization in license file according to the information used during registration, and utilize the hardware information generating solution decryption key of this client 12A to be decrypted the enciphered message in this authorization, obtain Protective Key, and this Protective Key is sent to decrypting digital periodical unit 44; With deciphering digital journals unit 44, the digital journals content of Protective Key to the encryption received from receiving element 42 received from Protective Key unit 43 is utilized to be decrypted.
Wherein, Protective Key unit 43 comprises further: licence extraction unit 431, for finding corresponding authorization according to the information used during registration from the license file that receiving element 42 receives, from this authorization, obtain corresponding enciphered message, and this enciphered message is sent to deciphering Protective Key unit 432; Deciphering Protective Key unit 432, utilizes the hardware information generating solution decryption key of this client 12A to be decrypted the enciphered message received from licence extraction unit 431, obtains Protective Key.
Describe method for subscribing according to first embodiment of the invention and system referring to figs. 1 to Fig. 4 above, but should be appreciated that, the inventive method is not limited in step and unit disclosed in this execution mode, also can comprise other prioritization schemes.
Such as, in order to increase fail safe, client 12A, when sending log-on message and subscription information to server 11, can be encrypted transmission to log-on message and subscription information, and first server 11 will utilize corresponding decryption method to be decrypted it after receiving log-on message and subscription information.And booking reader A also can only carry out subscribing to and registering on a client 12A, other client 12A only registers, and need not subscribe to again.
Again such as, when booking reader A subscription digital periodical, can according to different subscription conditions, such as, different expenses standards obtains different use rights, comprise the right of the operation such as forwarding, download, duplicating, printing to the digital journals content of deciphering, and the quantity of registered client 12A can be limited according to different expenses standards.Correspondingly, in each authorization in license file, except enciphered message disclosed in the first execution mode and corresponding information thereof, also should comprise these subscription conditions and use right.
Again such as, except the propelling movement mode adopted in the first execution mode, license file also only can be pushed in the issue date multiple client 12A that booking reader A registers by server 11.In this case, first the client 12A receiving license file downloads the digital journals content of encryption from server 11 according to this license file, and the digital journals content to the encryption of downloading is decrypted according to this license file and log-on message.Because digital journals content is encrypted, so download for user by any channel, such as, publicly or issue the digital journals content of encryption in modes such as specific cryptosystems.In addition; server 11 also can get out random Protective Key and license file according to the log-on message received and subscription information in advance; after each issue digital journals content production completes; this random Protective Key is utilized to be encrypted it; then regularly license file etc. is pushed to the client 12A of registration by (such as, closing on the date in issue date or other).Or the digital journals content of license file and encryption also can be merged into a file by server, is then regularly pushed to the client of this booking reader.
(the second execution mode)
In this second embodiment, be with the difference of the first execution mode, not register on each client 12A of booking reader A respectively, but only carry out registering and subscribing on an one client 12A, gather the hardware information of all client devices that booking reader A registers and the information corresponding to these hardware informations by this client 12A.Concrete acquisition method can be connected by network, other interface connects or send or copy on the client device that just carries out registering after Information Monitoring encryption in the machine.
Fig. 5 is the schematic diagram of the system realizing above method.As shown in Figure 5, booking reader A by registering unit 41 register and subscription digital periodical time, collecting unit 40 gathers the hardware information of other client device that the hardware information of himself equipment and booking reader A register and the information corresponding to these hardware informations, and these hardware informations and information are sent to registering unit 41 as a log-on message.
By this execution mode, booking reader A only needs in an one client (such as, computer) on carry out registering and subscribing to, just can in other client of this user (such as, mobile phone) above directly receive and viewing digital journals, and do not need to re-register on the other clients.
(specific embodiment)
Below will be further detailed the present invention by a specific embodiment.
In this embodiment; suppose; first phase publishes the subscription that row unit needs to carry out being with to a monthly magazine monthly issued for 1st copyright protection; a booking reader Zhang San have subscribed this periodical; subscribing to the start-stop phase is from January, 2009 in December, 2009, and needs to receive and read this part of periodical on N platform computer (or mobile phone, handheld device).
First, Zhang San pays to server registration user in an one client, and on N platform computer (or mobile phone, handheld device) respectively to server registration hardware information HINFOi (i=1 ... N) (as mainboard number, No. CPU, the hard disk number of PC, the equipment unique number that the handheld device of Windows Mobile is got by GetDeviceUniqueID ()), and extract corresponding computer name CNAMEi (i=1 respectively ... N) as information, such as, GetComputerName () function can be used to obtain computer name at windows platform, computer name is obtained at Linux platform sys_gethostname () function, in Windows Mobile platform (Pocket PC and SmartPhone), use System.Net.Dns.GetHostName () attribute to obtain related names, on hand-held mobile reading equipment can by being connected with computer time device driver obtain the title of equipment.Then, the hardware information HINFOi (i=1 will got ... and computer name CNAMEi (i=1 N) ... N) as log-on message and subscription information (comprise booking reader's information, subscription journal title with subscribe to the start-stop phase) together be sent to server end.When sending log-on message and subscription information, hardware information and computer name is transmitted by encryption, such as, use server public key K, respectively HINFOi and CNAMEi is encrypted, and is connected in series K (HINFOi)+K (CNAMEi) together and sends (series-mounting can be undertaken by the way of increase separator as " || space || ") as parameter.
Then, server is decrypted by the private key P corresponding to PKI K; Monthly 1 day, first get out the digital journals content file CF of this monthly magazine, then use random key generator to produce a random key as Protective Key KC, the content file KC (CF) that symmetric cryptography obtains encryption is carried out to content file CF.Server is checked through Zhang San and have subscribed this periodical; so obtain Hash (HINFOi) (i=1 after converting with the hardware information of Message Digest 5 Hash () to the N platform equipment of Zhang San ... N) as encryption key; for encipherment protection key K C, obtain enciphered message KHi (i=1 ... N).(namely server adds enciphered message in the authorization corresponding to this equipment; the Protective Key encrypted) KHi (i=1 ... and decipher the information of this enciphered message N); that is, the corresponding relation of corresponding enciphered message and information.
Fig. 6 is the schematic diagram of the license file FLic generated in this embodiment.As shown in Figure 6; " zhangsanPC " information in <Permission> label in ClientName attribute is information; the information of " akeo832mj294bkjhk " in <info> label is enciphered message; that is, the Protective Key of encryption.
Then, the license file FLic of generation together with the digital journals content file KC (CF) encrypted, is sent in the mailbox of Zhang San by email by server.
After Zhang San gets the mail, the N platform client device of Zhang San opens license file FLic, after first client obtains the device name information CNAMEi of the machine, the Permission node that ClientName and CNAMEi is identical is found in license file, obtain its enciphered message, that is, the information in <info> node.Then; the hardware information HINFOi of this equipment is utilized to obtain decruption key after Message Digest 5 Hash (HINFOi) converts; decrypt the Protective Key KC of digital journals content; and with this Protective Key KC decrypting digital periodical content file KC (CF), thus obtain this final digital monthly magazine content CF.
(the 3rd execution mode)
3rd execution mode, compared with above execution mode, adds the equipment allowing Delete superfluous and the function increasing new equipment.
In some cases (as device losses, damage or separately do its with), booking reader needs to delete the unnecessary equipment do not re-used.Following methods Delete superfluous equipment can be adopted: booking reader A sends the request of Delete superfluous equipment 12A ' from any one its chartered multiple client 12A to server 11, can comprise following relevant parameter in this removal request: send the hardware information HINFOn of the equipment 12A of removal request and the information CNAMEm of corresponding information CNAMEn and equipment 12A ' to be deleted thereof.It is equipment to be deleted that this method does not limit the equipment of filing an application, even if can ensure that certain equipment is loss like this, still on other device registration, can send removal request to server, thus the unit deletion that this is loss.
In addition, in order to strengthen the fail safe of sweep equipment process, the PKI K of server 11 can be used to be encrypted removal request, and to carry out being connected in series K (HINFOn)+K (CNAMEn)+K (CNAMEm) to send as parameter (series-mounting can be undertaken by the way of increase separator as " || space || ").
Server 11 is after receiving removal request; the hardware information of equipment 12A ' to be deleted and corresponding information thereof is deleted from original log-on message; thus obtain the log-on message of renewal, and utilize the log-on message and Protective Key generation license file that upgrade.Then, the digital journals content of this license file and encryption is pushed to the registered client 12A (now, not comprising deleted client 12A ') of booking reader A.
About the function increasing equipment, realize by following methods: booking reader A can send the request increasing device A m from any one its chartered multiple client 12A to server 11, this increase request comprises the hardware information HINFOm of hardware information HINFOn and the corresponding information CNAMEn and device A m to be increased thereof sending the equipment 12A increasing request and corresponding information CNAMEm thereof, wherein, the hardware information HINFOm of device A m to be increased and corresponding information CNAMEm thereof gathers by sending the equipment 12A increasing request.As mentioned above, concrete acquisition method can be connected by network, other interfaces connect or on the machine Am Information Monitoring encryption after send or copy to just carry out increase registration client 12A on.The same with sweep equipment process, in order to strengthen the fail safe increasing device procedures, use the PKI K of server 11 to be encrypted increase request, and carry out being connected in series K (HINFOm)+K (CNAMEm)+K (HINFOn)+K (CNAMEn) sending as parameter (series-mounting can be undertaken by the way of increase separator as " || space || ").
Server 11 is after receiving increase request; the hardware information of device A m to be increased and corresponding information thereof is increased in original log-on message; thus obtain the log-on message of renewal; and utilize the log-on message and Protective Key generation license file that upgrade; then, the digital journals content of this license file and encryption is pushed to registered client 12A and the Am of booking reader A.
(the 4th execution mode)
The difference of the 4th execution mode and above execution mode is, add the adaptive functional that part hardware configuration in hardware device is changed, namely, when the fractional hardware in hardware device configures (such as, mainboard, CPU, hard disk etc.) when changing (comprising replacing, deletion, increase etc.), still can normally use the license file of generation to obtain the digital journals content of encryption.
For this function, the present invention adopts the method (Chinese patent being 200410004751.7 see the patent No. " has the digital content of hardware adaptive mechanism and the method for hardware binding ") of the digital content and hardware binding with hardware adaptive mechanism to realize.In this approach, mainly adopt secret sharing scheme, the hardware configuration situation in conjunction with the client of booking reader realizes hardware adaptive mechanism, thus makes the change of the hardware configuration in certain limit in hardware device, can not affect the legal use of digital content.Specifically, the Protective Key of digital journals is divided into n shared sub-key, and generates respectively to n the encryption key that this n shared sub-key is encrypted according to the multiple hardware configuration in client device.When have in this client device be less than n-t hardware configuration occur to change time, namely, when having t in this client device and above hardware configuration is remained valid, still normally can obtain the digital content of encryption by occupancy permit file, otherwise cannot continue to use digital content.In that patent, define threshold schemes (t, n) coming and realize above method, wherein, t is the threshold value of the quantity of effective sub-key (hardware configuration corresponding to remaining valid).
In the present invention, when booking reader A registers on client 12A, when the first execution mode, the collecting unit 40 of the client 12A registered gathers the characteristic information of n the related hardware configuration of this hardware device self (such as, numbering), comprising n non-existent on this client device
0the characteristic information of individual related hardware configuration; When employing the second execution mode, the collecting unit 40 of the client 12A registered gathers the characteristic information of the related hardware configuration of whole client device 12A that booking reader A registers, and the characteristic information that each client device gathers n related hardware configuration (comprises non-existent n on this client device
0the characteristic information of individual related hardware configuration).Now, client 12A comprises these characteristic informations gathered by collecting unit 40 to the hardware information that server 11 sends.
After server 11 receives such hardware information, generate license file according to following steps:
According to the hardware information received, select the value of the threshold parameter t in (t, n) threshold schemes:
The Protective Key of digital journals is divided into n shared sub-key;
For each client device, the hardware configuration of this n shared sub-key and this equipment is bound, namely the characteristic information of n hardware configuration of this equipment of reception is utilized to generate n encryption key, be respectively used to be encrypted n bit string after n shared sub-key or this n shared sub-key convert one by one, generate the validity check information of each shared sub-key simultaneously; The shared sub-key of the value of threshold parameter t, encryption and validity check information thereof are formed an enciphered message; This enciphered message and corresponding information thereof are generated an authorization together;
The multiple authorizations generated are merged generation license file.
After client 12A receives license file, perform following decryption step:
The information used when registering according to client 12A finds corresponding authorization in license file;
Extract the characteristic information of n the related hardware configuration of this client 12A, and utilize these characteristic informations to generate n decruption key, be respectively used to be decrypted the n in the enciphered message in this authorization shared sub-key;
According to validity check information and the (t of each shared sub-key; n) threshold schemes; validity check is carried out to each shared sub-key; if there is t and above effectively shared sub-key; the Protective Key of digital journals content is then recovered according to these effective sub-keys; and utilize the digital journals content of this Protective Key to encryption to be decrypted, otherwise key recovery failure.
By this execution mode, the hardware configuration in hardware device in certain limit changes the legal use that can not affect digital journals, and the license file of generation still can continue normal use, and does not need again to apply for, greatly facilitates user.
In addition, preferably, also out of Memory can be comprised in the enciphered message formed, such as, cryptography information etc., namely, the shared sub-key of the value of threshold parameter t, encryption and validity check information thereof and out of Memory (such as, cryptography information) are formed an enciphered message.In addition, in license file, also can comprise the information of other needs, such as license file integrity check information etc.Now, client, after receiving license file, first needs to verify the completeness and efficiency of license file.
Can find out from above embodiment, according to method for subscribing of the present invention, booking reader regularly can receive license file on its multiple client devices of specifying, then be decrypted according to the digital journals content of this license file to encryption, thus not only avoid the problem of Replay Attack, but also the control to hardware device can be realized.In addition, a licence can use on multiple equipment of booking reader, and need not generate respectively and send, and when the fractional hardware configuration in hardware device occurs to change, still can normal occupancy permit file, thus greatly facilitates user.In addition, booking reader can delete or increase equipment in chartered client, improves the flexibility of subscribing digital periodical.
The present invention is described in detail above with reference to drawings and Examples.But; it should be appreciated by those skilled in the art; the present invention is not limited to disclosed specific embodiment, and the similar amendment that any those of ordinary skill in the art can expect on this basis, replacement and distortion all should be included in protection scope of the present invention.
Claims (27)
1. the subscribing digital periodical method with copyright protection, the method comprises:
Step 1, booking reader in its client to server registration and subscription digital periodical, server receives log-on message and the subscription information of multiple clients that booking reader registers, described log-on message comprises the hardware information of client device and the information corresponding to described hardware information, described information is the title of the device name of client device or user's input, described subscription information comprise booking reader's information, subscription journal title and subscribe to the start-stop phase;
Step 2, server by utilizing Protective Key are encrypted the digital journals content of subscribing to, and for the booking reader of issue date within its subscription start-stop phase, generate license file according to Protective Key with from the hardware information the log-on message that its client receives and the information corresponding to described hardware information, then the digital journals content of license file and encryption is pushed to the client of this booking reader; With
Step 3, the client of digital journals content receiving license file and encryption are decrypted the digital journals content of encrypting according to the hardware information that uses when this license file and registration and the information corresponding to described hardware information;
In described step 2, the step of server generation license file comprises:
Utilize the hardware information of each client device of registration to generate encryption key to be encrypted Protective Key, form an enciphered message;
This enciphered message and corresponding information thereof are generated an authorization together, information when corresponding information refers to this client registers in log-on message;
The multiple authorizations generated are merged generation license file, described license file can be shared to make multiple client;
Described step 3 comprises:
Corresponding authorization in license file is found according to the information used during described client registers;
Utilize the hardware information generating solution decryption key of this client device to be decrypted the enciphered message in this authorization, obtain Protective Key;
The digital journals content of this Protective Key to encryption is utilized to be decrypted.
2. method according to claim 1, is characterized in that, described step 1 comprises:
Booking reader is registration also subscription digital periodical in its multiple client respectively, these clients gather the hardware information of respective equipment and the information corresponding to described hardware information respectively, and this hardware information and the information corresponding to described hardware information and subscription information are sent to server together.
3. method according to claim 1, is characterized in that, described step 1 comprises:
Booking reader registers and subscription digital periodical in an one client, the hardware information of other client device that the hardware information that this client gathers equipment of itself is registered with this booking reader and the information corresponding to these hardware informations, and these hardware informations and the information corresponding to described hardware information are sent to server together with subscription information.
4. method according to claim 1, is characterized in that, the step of the hardware information generation encryption key of described server by utilizing registration comprises:
Utilize the hardware information of Message Digest 5 to client device to convert, and the information obtained after utilizing conversion generate encryption key.
5. method according to claim 4, is characterized in that, described client utilizes the hardware information of Message Digest 5 to client device to convert, and the information generating solution decryption key obtained after utilizing conversion is decrypted.
6. method according to claim 1, is characterized in that, described Protective Key uses random key algorithm to generate.
7. method according to claim 1, is characterized in that, described information is the device name of relative client or the title of user's input.
8. method according to claim 7, is characterized in that, booking reader registration and subscription digital periodical time, if registration information repeat, then allow booking reader revise information.
9. method according to claim 1, it is characterized in that, described subscription information also comprises the use right obtained according to different subscription conditions, comprise the forwarding of the digital journals content to deciphering, download, duplicating, the right of printing and the quantity of registered client to limit, described subscription condition comprises toll condition.
10. method according to claim 1, is characterized in that, the digital journals content of license file and encryption is merged into the client of a file push to booking reader by server.
11. methods according to claim 1, is characterized in that, also comprise:
Booking reader sends the request of sweep equipment from any one its chartered multiple client to server, this removal request comprises the hardware information of equipment and the information of the information corresponding to described hardware information and equipment to be deleted that send this removal request
Server is after receiving removal request; the hardware information of equipment to be deleted and the information corresponding to described hardware information is deleted from original log-on message; thus obtain the log-on message of renewal; and utilize the log-on message of this renewal and described Protective Key to generate license file, then the digital journals content of this license file and encryption is pushed to the registered client of this booking reader.
12. methods according to claim 11, is characterized in that, also comprise: client is encrypted and is connected in series to it can be used as parameter to be sent to server to described removal request.
13. methods according to claim 1, is characterized in that, also comprise:
Booking reader sends the request of increase equipment from any one its chartered multiple client to server, this increase request comprises the hardware information of equipment and the hardware information of the information corresponding to described hardware information and equipment to be increased and the information corresponding with described hardware information that send this increase request, the hardware information of described equipment to be increased and the information corresponding to described hardware information are by the client device collection sending this increase request
Server is after receiving increase request; the hardware information of equipment to be increased and the information corresponding to described hardware information is increased in original log-on message; thus obtain the log-on message of renewal; and utilize the log-on message of this renewal and described Protective Key to generate license file, then the digital journals content of this license file and encryption is pushed to the registered client of this booking reader.
14. methods according to claim 13, is characterized in that, also comprise: client is encrypted and is connected in series to it can be used as parameter to be sent to server to described increase request.
15. methods according to claim 1, is characterized in that, the hardware information of each client device comprises the characteristic information of n related hardware configuration of this client device, comprising n non-existent on this client device
0the characteristic information of individual related hardware configuration.
16. methods according to claim 15, is characterized in that, in described step 2, the step of server generation license file comprises:
According to the hardware information received, select the value of the threshold parameter t in (t, n) threshold schemes:
wherein, t represents the threshold value of the quantity of effective sub-key;
Described Protective Key is divided into n shared sub-key;
For each client device, the hardware configuration of this n shared sub-key and this equipment is bound, namely the characteristic information of n hardware configuration of this equipment of reception is utilized to generate n encryption key, n the bit string being respectively used to obtain after converting one by one this n shared sub-key or this n shared sub-key is encrypted, and generates the validity check information of each shared sub-key simultaneously; The shared sub-key of the value of threshold parameter t, encryption and validity check information thereof are formed an enciphered message; This enciphered message and the information of deciphering this enciphered message are generated an authorization together;
The multiple authorizations generated are merged generation license file.
17. methods according to claim 16, is characterized in that, described step 3 comprises:
Corresponding authorization in license file is found according to the information used during described client registers;
Extract the characteristic information of n related hardware configuration of this client device, and utilize these characteristic informations to generate n decruption key, be respectively used to be decrypted the n in the enciphered message in this authorization shared sub-key or n bit string;
According to validity check information and the (t of each shared sub-key; n) threshold schemes; validity check is carried out to each shared sub-key of deciphering; if there is t and above effectively shared sub-key; the Protective Key of digital journals content is then recovered according to these effective sub-keys; and utilize the digital journals content of this Protective Key to encryption to be decrypted, otherwise key recovery failure.
18. 1 kinds of subscribing digital periodical systems with copyright protection, this system comprises:
Multiple client, for booking reader thereon to server registration and subscription digital periodical, then log-on message and subscription information are sent to server, described log-on message comprises the hardware information of client device and the information corresponding to described hardware information, described information is the title of the device name of client device or user's input, described subscription information comprise booking reader's information, subscription journal title and subscribe to the start-stop phase; When receiving the digital journals content of license file and encryption from server, according to the hardware information used when this license file and registration and the information corresponding to described hardware information, the digital journals content of encrypting is decrypted; With
Server, for utilizing Protective Key, the digital journals content of subscribing to is encrypted, and for the booking reader of issue date within its subscription start-stop phase, generate license file according to Protective Key with from the hardware information the log-on message that its client receives and the information corresponding to described hardware information, then the digital journals content of license file and encryption is pushed to the client of this booking reader;
Described server comprises:
Subscribing to processing unit, for receiving log-on message and subscription information from client, and log-on message and subscription information being sent to periodical to encrypt and granted unit;
Periodical encryption and granted unit, for utilizing Protective Key, digital periodical content is encrypted, and for the booking reader of issue date within its subscription start-stop phase, generate license file according to Protective Key with from the hardware information the log-on message that its client receives and the information corresponding to described hardware information; With
Push unit, for being pushed to client by the digital journals content of license file and encryption;
Described periodical encryption and granted unit comprise:
Periodical content unit, for utilizing Protective Key to be encrypted digital periodical content, and sends to encryption key element by Protective Key, the digital journals content of encryption is sent to push unit;
Encryption key element, for utilizing the hardware information generation encryption key from subscribing to processing unit reception, the Protective Key received from periodical content unit is encrypted, form an enciphered message, and this enciphered message is sent to license file generation unit, encryption key is sent to and subscribes to client-side information unit;
Subscribe to client-side information unit, for generating the corresponding relation from subscribing to the processing unit information received and the encryption key received from encryption key element;
License file generation unit, for utilizing from the corresponding relation of subscribing to the reception of client-side information unit, from subscribing to the information of processing unit reception and generating an authorization from the enciphered message that encryption key element receives, and the multiple authorizations generated are merged generation license file, then this license file is sent to push unit;
Described client comprises:
Collecting unit, gathers the hardware information of this client equipment of itself and the information corresponding to described hardware information, and this hardware information and information are sent to registering unit as a log-on message;
Registering unit, subscription information and log-on message by this registering unit registration also subscription digital periodical, and are sent to server by booking reader;
Receiving element, for receiving the digital journals content of license file from server push and encryption, and sends to Protective Key unit by license file, the digital journals content of encryption is sent to decrypting digital periodical unit;
Protective Key unit, for finding corresponding authorization in license file according to the information used during registration, and utilize the hardware information generating solution decryption key of this client to be decrypted the enciphered message in this authorization, obtain Protective Key, and Protective Key is sent to decrypting digital periodical unit; With
Decrypting digital periodical unit, utilizes the digital journals content of Protective Key to the encryption received from receiving element received from Protective Key unit to be decrypted;
Described Protective Key unit comprises:
Licence extraction unit, for finding corresponding authorization according to the information used during registration in the license file received from receiving element, from this authorization, obtain corresponding enciphered message, and this enciphered message is sent to deciphering Protective Key unit;
Deciphering Protective Key unit, utilizes the hardware information generating solution decryption key of this client to be decrypted the enciphered message received from licence extraction unit, obtains Protective Key.
19. systems according to claim 18, it is characterized in that, the hardware information of other client device that the hardware information of described himself equipment of collecting unit collection and booking reader register and the information corresponding to these hardware informations, and these hardware informations and information are sent to registering unit as a log-on message.
20. systems according to claim 18, is characterized in that, the digital journals content of license file and encryption is merged into the client of a file push to this booking reader by server.
21. systems according to claim 18, it is characterized in that, booking reader sends the request of sweep equipment from any one its chartered multiple client to server, this removal request comprises the hardware information of equipment and the information of the information corresponding to described hardware information and equipment to be deleted that send this removal request
Server is after receiving removal request; the hardware information of equipment to be deleted and the information corresponding to described hardware information is deleted from original log-on message; thus obtain the log-on message of renewal; and utilize the log-on message of this renewal and described Protective Key to generate license file, then the digital journals content of this license file and encryption is pushed to the registered client of this booking reader.
22. systems according to claim 21, is characterized in that, client is encrypted and is connected in series to it can be used as parameter to be sent to server to described removal request.
23. systems according to claim 18, it is characterized in that, booking reader sends the request of increase equipment from any one its chartered multiple client to server, this increase request comprises the hardware information of equipment and the hardware information of the information corresponding to described hardware information and equipment to be increased and the information corresponding with described hardware information that send this increase request, the hardware information of described equipment to be increased and the information corresponding to described hardware information are by the equipment collection sending this increase request
Server is after receiving increase request; the hardware information of equipment to be increased and the information corresponding to described hardware information is increased in original log-on message; thus obtain the log-on message of renewal; and utilize the log-on message of this renewal and described Protective Key to generate license file, then the digital journals content of this license file and encryption is pushed to the registered client of this booking reader.
24. systems according to claim 23, is characterized in that, client is encrypted and is connected in series to it can be used as parameter to be sent to server to described increase request.
25. systems according to claim 18, is characterized in that, the hardware information of each client device comprises the characteristic information of n related hardware configuration of this client device, comprising n non-existent on this client device
0the characteristic information of individual related hardware configuration.
26. systems according to claim 25, is characterized in that, the step that server generates license file comprises:
According to the hardware information received, select the value of the threshold parameter t in (t, n) threshold schemes:
wherein, t represents the threshold value of the quantity of effective sub-key;
Described Protective Key is divided into n shared sub-key;
For each client device, the hardware configuration of this n shared sub-key and this equipment is bound, namely the characteristic information of n hardware configuration of this equipment of reception is utilized to generate n encryption key, n the bit string being respectively used to obtain after converting one by one this n shared sub-key or this n shared sub-key is encrypted, and generates the validity check information of each shared sub-key simultaneously; The shared sub-key of the value of threshold parameter t, encryption and validity check information thereof are formed an enciphered message; This enciphered message and the information of deciphering this enciphered message are generated an authorization together;
The multiple authorizations generated are merged generation license file.
27. systems according to claim 26, is characterized in that, server performs following decryption step:
Corresponding authorization in license file is found according to the information used during described client registers;
Extract the characteristic information of n related hardware configuration of this client device, and utilize these characteristic informations to generate n decruption key, be respectively used to be decrypted the n in the enciphered message in this authorization shared sub-key or n bit string;
According to validity check information and the (t of each shared sub-key; n) threshold schemes; validity check is carried out to each shared sub-key of deciphering; if there is t and above effectively shared sub-key; the Protective Key of digital journals content is then recovered according to these effective sub-keys; and utilize the digital journals content of this Protective Key to encryption to be decrypted, otherwise key recovery failure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910241440.5A CN102088443B (en) | 2009-12-02 | 2009-12-02 | Method and system for subscribing digital periodical with copyright protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910241440.5A CN102088443B (en) | 2009-12-02 | 2009-12-02 | Method and system for subscribing digital periodical with copyright protection |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102088443A CN102088443A (en) | 2011-06-08 |
| CN102088443B true CN102088443B (en) | 2015-04-01 |
Family
ID=44100058
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910241440.5A Expired - Fee Related CN102088443B (en) | 2009-12-02 | 2009-12-02 | Method and system for subscribing digital periodical with copyright protection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102088443B (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102999710B (en) * | 2011-09-14 | 2016-09-21 | 北京大学 | A kind of safety shares the method for digital content, equipment and system |
| CN104182659B (en) * | 2013-05-21 | 2018-01-26 | 北大方正集团有限公司 | Server, system and digital right merging method |
| CN104462872B (en) * | 2013-09-13 | 2018-11-06 | 北大方正集团有限公司 | Terminal, server and digital Content-Authorize method |
| US10282538B2 (en) * | 2014-12-27 | 2019-05-07 | Intel Corporation | Technologies for providing hardware subscription models using pre-boot update mechanism |
| CN106713253B (en) * | 2015-11-18 | 2020-10-13 | 中兴通讯股份有限公司 | Method and device for sending and receiving information in peripheral perception networking |
| CN105512519A (en) * | 2015-11-30 | 2016-04-20 | 北大方正集团有限公司 | Digital resource copyright protection method, opening method and device, and hardware storage device |
| CN107943969B (en) * | 2017-11-28 | 2020-06-23 | 平安养老保险股份有限公司 | Annuity data file sending method and device, computer equipment and storage medium |
| CN109460637A (en) * | 2018-10-25 | 2019-03-12 | 深圳市腾讯信息技术有限公司 | Operation method, device, storage medium and the electronic device of server version file |
| CN113132107B (en) * | 2019-12-31 | 2023-02-07 | 奇安信科技集团股份有限公司 | License encryption method and device, license decryption method and device and equipment |
| CN112784303B (en) * | 2021-01-26 | 2022-11-22 | 政采云有限公司 | File encryption method, device, system and storage medium |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1571331A (en) * | 2004-04-23 | 2005-01-26 | 清华大学 | A method for large-scale living broadcast of digital content |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001098903A1 (en) * | 2000-06-16 | 2001-12-27 | Entriq Limited BVI Abbot Building | Methods and systems to distribute content via a network utilizing distributed conditional access agents and secure agents, and to perform digital rights management (drm) |
-
2009
- 2009-12-02 CN CN200910241440.5A patent/CN102088443B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1571331A (en) * | 2004-04-23 | 2005-01-26 | 清华大学 | A method for large-scale living broadcast of digital content |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102088443A (en) | 2011-06-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102088443B (en) | Method and system for subscribing digital periodical with copyright protection | |
| CN109587132B (en) | Data transmission method and device based on alliance chain | |
| CN101222509B (en) | Data protection transmission method of P2P network | |
| CN101821746B (en) | Device and method for backup of rights objects | |
| JP4086782B2 (en) | Access to broadcast content | |
| CN102802036B (en) | System and method for identifying digital television | |
| CN101019370A (en) | Method of providing conditional access | |
| CN102088441B (en) | Data encryption transmission method and system for message-oriented middleware | |
| US20090138708A1 (en) | Cryptographic module distribution system, apparatus, and program | |
| CN103237040A (en) | Storage method, storage server and storage client | |
| CN104809407A (en) | Method and system for encrypting, decrypting and verifying cloud storage front end data | |
| CN101478532A (en) | Method and system for secure peer-to-peer communication | |
| JP2000332746A (en) | Distribution system and distribution device, receiver, and distributing method for digital contents | |
| CN111526197A (en) | Cloud data secure sharing method | |
| US20020021804A1 (en) | System and method for data encryption | |
| CN102088352B (en) | Data encryption transmission method and system for message-oriented middleware | |
| CN103236934A (en) | Method for cloud storage security control | |
| Xiong et al. | A secure document self-destruction scheme: an ABE approach | |
| CN102457561A (en) | Data access method and device using same | |
| CN104168320A (en) | User data sharing method and system | |
| CN101409618A (en) | Method for encrypting and deciphering multi-reader document | |
| CN103237011A (en) | Digital-content encryption transmission method and server side | |
| JP5586397B2 (en) | Secure network storage system, method, client device, server device, and program | |
| CN101471771A (en) | Method and system for transmitting and enciphering medium based on P2P network | |
| KR20070100712A (en) | Method and system for encryption by a proxy |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220621 Address after: 3007, Hengqin international financial center building, No. 58, Huajin street, Hengqin new area, Zhuhai, Guangdong 519031 Patentee after: New founder holdings development Co.,Ltd. Patentee after: FOUNDER APABI TECHNOLOGY Ltd. Patentee after: Peking University Address before: 100871, Beijing, Haidian District, Cheng Fu Road, No. 298, Zhongguancun Fangzheng building, 5 floor Patentee before: PEKING UNIVERSITY FOUNDER GROUP Co.,Ltd. Patentee before: FOUNDER APABI TECHNOLOGY Ltd. Patentee before: Peking University |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150401 |