WO2000004422A2 - Method for image processing to facilitate copy protection - Google Patents
Method for image processing to facilitate copy protection Download PDFInfo
- Publication number
- WO2000004422A2 WO2000004422A2 PCT/US1999/016515 US9916515W WO0004422A2 WO 2000004422 A2 WO2000004422 A2 WO 2000004422A2 US 9916515 W US9916515 W US 9916515W WO 0004422 A2 WO0004422 A2 WO 0004422A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- string
- work
- copy protection
- values
- document
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T1/00—General purpose image data processing
- G06T1/0021—Image watermarking
- G06T1/005—Robust watermarking, e.g. average attack or collusion attack resistant
- G06T1/0078—Robust watermarking, e.g. average attack or collusion attack resistant using multiple thresholds
Definitions
- the present invention relates generally to securing content against wrongful duplication and, more particularly, techniques for processing an image into a digital string so that images with similar features (e.g., illicit or cropped copies) get mapped into a digital string that is close to the original string.
- images with similar features e.g., illicit or cropped copies
- public computer networks e.g., the Internet
- a still further object of this invention is to provide for more efficient and reliable copy and copyright enforcement schemes.
- the present invention is preferably implemented in software (e.g., a series of program instructions) executed in a computer. It is assumed that the content to be protected in a picture or other image.
- the invention may be applied to any content (including, without limitation, video, graphics, sound, text, etc.) irrespective of its form, however. Forpu ⁇ oses of illustration, the invention will be described in the context of a picture. The picture is digitized in any convenient manner.
- the picture is run through a hashing algorithm and reduced to approximately thirty (30) bits so that most any other picture that was a small modification of the original gets mapped to the same string (with maybe a couple of bits different).
- This is useful in watermarking since this string, then, could be used as part of x_l, ..., x_n when one uses H(x_l ... x_n
- H H(x_l ... x_n
- the watermark used for different pictures is different (which makes it harder for the adversary to remove) but it is still possible for someone who knows H to regenerate the watermark for a correlation test (without access to a database), since even if the adversary changes the picture a little, he cannot change the string x_l, ..., x_n very much; so, it is possible to later regenerate the original x_l, ..., x_n by computing the derived values from the picture and trying all possibilities that are within a few bits.
- mapping function is also useful in Web search engines. For example, assume one wants to search for copies of a document/picture on the Web even if such copies are changed a little bit. One could use the present invention and compute the string for every candidate picture on the Web and see which ones were close to the string for the original. From this information, one could check the candidates that match by eye, thereby cutting the search space by a huge factor. There may also be applications in the domain of organizing pictorial data into similarity classes, which could be done according to the digital string produced by the following algorithm.
- Step 1 generate m x n N(0,1) random variables Z_(l,l), ..., Z_(m,n). Store these values in an m x n matrix Z*. These values will be used for all documents and will be kept secret.
- Step 2 convert the document into a digital string y_l, ..., y_n using any standard method.
- y_i can be thought of as a N(0, 1 ) random variable. (The latter step is not required, but it makes the process work better.) Treat the n values as a vector y*.
- v_l, ..., v_m denote the values of v*.
- each v_i can be thought of as a normal random variable, no matter what the y values are.
- the mean of each v_i is M - (y_l + ... + y_m)/m.
- Step 4 compute two thresholds t' and t" as follows. Select t' so that the probability that y_l x u_l + ... + y_m x u_m ⁇ t' is close to about 1/4 when each u_i is an independent N(0,1) random variable.
- each b_i will be equally likely to be 0 or 1.
- the values b_l, ..., b__m form the desired bit string for the document.
- the mapping function reduces the content (to be protected) from a large number of bytes to a string having a small number of bits. Changing just a few values of y* (or all of the values of y* by a little bit), however, does not have a meaningful effect on the values of b* that are computed. For example, in order to change the value of b_j, the adversary must change enough of the y_i's by enough so that the corresponding vj is pushed across a threshold.
- mapping function when applied to copies of the document
- the technique described above creates a first string from a picture (or other work) with the property that if one modifies the picture by some given degree (e.g., through intentional variation or perhaps merely through aging), a second string (generated by the inventive technique) and associated with the modified picture is not meaningfully distinct from the first string.
- the invention can be used to reduce a picture (or other work) comprising a large number of bytes into a string having a small number of bits, and thus pictures that are similar result in the same or similar strings.
- an owner of the content sought to be protected may apply the algorithm to copies of the work for copy protection pu ⁇ oses.
- aspects of the present invention pertain to specific "method steps" implementable on one or more computers.
- the invention may be implemented as a computer program product for use with a computer system.
- programs defining the functions of the present invention can be delivered to a computer in many forms, which include, but are not limited to: (a) information permanently stored on non-writable storage media (e.g.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Storage Device Security (AREA)
- Editing Of Facsimile Originals (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA002304041A CA2304041C (en) | 1998-07-17 | 1999-07-19 | Method for image processing to facilitate copy protection |
AU53189/99A AU5318999A (en) | 1998-07-17 | 1999-07-19 | Method for image processing to facilitate copy protection |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12002398A | 1998-07-17 | 1998-07-17 | |
US09/120,023 | 1998-07-17 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2000004422A2 true WO2000004422A2 (en) | 2000-01-27 |
WO2000004422A3 WO2000004422A3 (en) | 2000-04-20 |
Family
ID=22387830
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US1999/016515 WO2000004422A2 (en) | 1998-07-17 | 1999-07-19 | Method for image processing to facilitate copy protection |
Country Status (3)
Country | Link |
---|---|
AU (1) | AU5318999A (en) |
CA (1) | CA2304041C (en) |
WO (1) | WO2000004422A2 (en) |
Cited By (48)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6405219B2 (en) | 1999-06-22 | 2002-06-11 | F5 Networks, Inc. | Method and system for automatically updating the version of a set of files stored on content servers |
US6473802B2 (en) | 1999-07-15 | 2002-10-29 | F5 Networks, Inc. | Method and system for storing load balancing information with an HTTP cookie |
US7047301B2 (en) | 2000-01-31 | 2006-05-16 | F5 Networks, Inc. | Method and system for enabling persistent access to virtual servers by an LDNS server |
US7146354B1 (en) | 1999-06-18 | 2006-12-05 | F5 Networks, Inc. | Method and system for network load balancing with a compound data structure |
US7343413B2 (en) | 2000-03-21 | 2008-03-11 | F5 Networks, Inc. | Method and system for optimizing a network by independently scaling control segments and data flow |
CN100397864C (en) * | 2004-07-07 | 2008-06-25 | 佳能株式会社 | Image processing system and image processing method |
US7441045B2 (en) | 1999-12-13 | 2008-10-21 | F5 Networks, Inc. | Method and system for balancing load distribution on a wide area network |
US7975025B1 (en) | 2008-07-08 | 2011-07-05 | F5 Networks, Inc. | Smart prefetching of data over a network |
US8059816B2 (en) * | 2005-05-13 | 2011-11-15 | Temple University Of The Commonwealth System Of Higher Education | Secret sharing technique with low overhead information content |
US8769265B1 (en) | 2002-09-03 | 2014-07-01 | F5 Networks, Inc. | Method and system for providing persistence in a secure network access |
US9077554B1 (en) | 2000-03-21 | 2015-07-07 | F5 Networks, Inc. | Simplified method for processing multiple connections from the same client |
US9083760B1 (en) | 2010-08-09 | 2015-07-14 | F5 Networks, Inc. | Dynamic cloning and reservation of detached idle connections |
US9154423B1 (en) | 2012-05-01 | 2015-10-06 | F5 Networks, Inc. | Minimize SYN-flood issues with flow cache while maintaining performance |
US9203771B1 (en) | 2012-07-23 | 2015-12-01 | F5 Networks, Inc. | Hot service flow hardware offloads based on service priority and resource usage |
US9338095B2 (en) | 2012-05-01 | 2016-05-10 | F5 Networks, Inc. | Data flow segment optimized for hot flows |
US9525632B1 (en) | 2012-05-01 | 2016-12-20 | F5 Networks, Inc. | Minimize recycle SYN issues for split TCP hot flows to improve system reliability and performance |
US9985976B1 (en) | 2011-12-30 | 2018-05-29 | F5 Networks, Inc. | Methods for identifying network traffic characteristics to correlate and manage one or more subsequent flows and devices thereof |
US10015286B1 (en) | 2010-06-23 | 2018-07-03 | F5 Networks, Inc. | System and method for proxying HTTP single sign on across network domains |
US10015143B1 (en) | 2014-06-05 | 2018-07-03 | F5 Networks, Inc. | Methods for securing one or more license entitlement grants and devices thereof |
USRE47019E1 (en) | 2010-07-14 | 2018-08-28 | F5 Networks, Inc. | Methods for DNSSEC proxying and deployment amelioration and systems thereof |
US10097616B2 (en) | 2012-04-27 | 2018-10-09 | F5 Networks, Inc. | Methods for optimizing service of content requests and devices thereof |
US10122630B1 (en) | 2014-08-15 | 2018-11-06 | F5 Networks, Inc. | Methods for network traffic presteering and devices thereof |
US10135831B2 (en) | 2011-01-28 | 2018-11-20 | F5 Networks, Inc. | System and method for combining an access control system with a traffic management system |
US10157280B2 (en) | 2009-09-23 | 2018-12-18 | F5 Networks, Inc. | System and method for identifying security breach attempts of a website |
US10182013B1 (en) | 2014-12-01 | 2019-01-15 | F5 Networks, Inc. | Methods for managing progressive image delivery and devices thereof |
US10187317B1 (en) | 2013-11-15 | 2019-01-22 | F5 Networks, Inc. | Methods for traffic rate control and devices thereof |
US10230566B1 (en) | 2012-02-17 | 2019-03-12 | F5 Networks, Inc. | Methods for dynamically constructing a service principal name and devices thereof |
US10375155B1 (en) | 2013-02-19 | 2019-08-06 | F5 Networks, Inc. | System and method for achieving hardware acceleration for asymmetric flow connections |
US10404698B1 (en) | 2016-01-15 | 2019-09-03 | F5 Networks, Inc. | Methods for adaptive organization of web application access points in webtops and devices thereof |
US10505792B1 (en) | 2016-11-02 | 2019-12-10 | F5 Networks, Inc. | Methods for facilitating network traffic analytics and devices thereof |
US10505818B1 (en) | 2015-05-05 | 2019-12-10 | F5 Networks. Inc. | Methods for analyzing and load balancing based on server health and devices thereof |
US10721269B1 (en) | 2009-11-06 | 2020-07-21 | F5 Networks, Inc. | Methods and system for returning requests with javascript for clients before passing a request to a server |
US10791119B1 (en) | 2017-03-14 | 2020-09-29 | F5 Networks, Inc. | Methods for temporal password injection and devices thereof |
US10791088B1 (en) | 2016-06-17 | 2020-09-29 | F5 Networks, Inc. | Methods for disaggregating subscribers via DHCP address translation and devices thereof |
US10797888B1 (en) | 2016-01-20 | 2020-10-06 | F5 Networks, Inc. | Methods for secured SCEP enrollment for client devices and devices thereof |
US10812266B1 (en) | 2017-03-17 | 2020-10-20 | F5 Networks, Inc. | Methods for managing security tokens based on security violations and devices thereof |
US10834065B1 (en) | 2015-03-31 | 2020-11-10 | F5 Networks, Inc. | Methods for SSL protected NTLM re-authentication and devices thereof |
US10931662B1 (en) | 2017-04-10 | 2021-02-23 | F5 Networks, Inc. | Methods for ephemeral authentication screening and devices thereof |
US10972453B1 (en) | 2017-05-03 | 2021-04-06 | F5 Networks, Inc. | Methods for token refreshment based on single sign-on (SSO) for federated identity environments and devices thereof |
US11044200B1 (en) | 2018-07-06 | 2021-06-22 | F5 Networks, Inc. | Methods for service stitching using a packet header and devices thereof |
US11063758B1 (en) | 2016-11-01 | 2021-07-13 | F5 Networks, Inc. | Methods for facilitating cipher selection and devices thereof |
US11122083B1 (en) | 2017-09-08 | 2021-09-14 | F5 Networks, Inc. | Methods for managing network connections based on DNS data and network policies and devices thereof |
US11122042B1 (en) | 2017-05-12 | 2021-09-14 | F5 Networks, Inc. | Methods for dynamically managing user access control and devices thereof |
US11496438B1 (en) | 2017-02-07 | 2022-11-08 | F5, Inc. | Methods for improved network security using asymmetric traffic delivery and devices thereof |
US11658995B1 (en) | 2018-03-20 | 2023-05-23 | F5, Inc. | Methods for dynamically mitigating network attacks and devices thereof |
US11757946B1 (en) | 2015-12-22 | 2023-09-12 | F5, Inc. | Methods for analyzing network traffic and enforcing network policies and devices thereof |
US11838851B1 (en) | 2014-07-15 | 2023-12-05 | F5, Inc. | Methods for managing L7 traffic classification and devices thereof |
US11895138B1 (en) | 2015-02-02 | 2024-02-06 | F5, Inc. | Methods for improving web scanner accuracy and devices thereof |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8868961B1 (en) | 2009-11-06 | 2014-10-21 | F5 Networks, Inc. | Methods for acquiring hyper transport timing and devices thereof |
US9313047B2 (en) | 2009-11-06 | 2016-04-12 | F5 Networks, Inc. | Handling high throughput and low latency network data packets in a traffic management device |
US9141625B1 (en) | 2010-06-22 | 2015-09-22 | F5 Networks, Inc. | Methods for preserving flow state during virtual machine migration and devices thereof |
US8908545B1 (en) | 2010-07-08 | 2014-12-09 | F5 Networks, Inc. | System and method for handling TCP performance in network access with driver initiated application tunnel |
US8886981B1 (en) | 2010-09-15 | 2014-11-11 | F5 Networks, Inc. | Systems and methods for idle driven scheduling |
US8959571B2 (en) | 2010-10-29 | 2015-02-17 | F5 Networks, Inc. | Automated policy builder |
EP2633667B1 (en) | 2010-10-29 | 2017-09-06 | F5 Networks, Inc | System and method for on the fly protocol conversion in obtaining policy enforcement information |
US9246819B1 (en) | 2011-06-20 | 2016-01-26 | F5 Networks, Inc. | System and method for performing message-based load balancing |
US9172753B1 (en) | 2012-02-20 | 2015-10-27 | F5 Networks, Inc. | Methods for optimizing HTTP header based authentication and devices thereof |
US9231879B1 (en) | 2012-02-20 | 2016-01-05 | F5 Networks, Inc. | Methods for policy-based network traffic queue management and devices thereof |
CN108205810B (en) * | 2016-12-16 | 2021-08-10 | 富士通株式会社 | Image comparison device and method and electronic equipment |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5587984A (en) * | 1994-09-13 | 1996-12-24 | Sony Corporation | Hologram printed on optical recording medium for copy protection |
US5875249A (en) * | 1997-01-08 | 1999-02-23 | International Business Machines Corporation | Invisible image watermark for image verification |
US5915027A (en) * | 1996-11-05 | 1999-06-22 | Nec Research Institute | Digital watermarking |
-
1999
- 1999-07-19 WO PCT/US1999/016515 patent/WO2000004422A2/en active Application Filing
- 1999-07-19 CA CA002304041A patent/CA2304041C/en not_active Expired - Lifetime
- 1999-07-19 AU AU53189/99A patent/AU5318999A/en not_active Abandoned
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5587984A (en) * | 1994-09-13 | 1996-12-24 | Sony Corporation | Hologram printed on optical recording medium for copy protection |
US5915027A (en) * | 1996-11-05 | 1999-06-22 | Nec Research Institute | Digital watermarking |
US5875249A (en) * | 1997-01-08 | 1999-02-23 | International Business Machines Corporation | Invisible image watermark for image verification |
Non-Patent Citations (2)
Title |
---|
COX ET AL.: 'Secure, Imperceptable Yet Perceptually Salient, Spread Spectrum Watermark for Multimedia' PROCEEDINGS OF THE 1996 IEEE SOUTHCON CONFERENCE June 1996, pages 192 - 197, XP002927251 * |
DELAIGLE ET AL.: 'A Psychovisual Approach for Digital Picture Watermarking' JOURNAL OF ELECTRONIC IMAGING vol. 7, no. 3, July 1998, pages 628 - 640, XP000771769 * |
Cited By (58)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7146354B1 (en) | 1999-06-18 | 2006-12-05 | F5 Networks, Inc. | Method and system for network load balancing with a compound data structure |
US7590625B1 (en) | 1999-06-18 | 2009-09-15 | F5 Networks, Inc. | Method and system for network load balancing with a compound data structure |
US6405219B2 (en) | 1999-06-22 | 2002-06-11 | F5 Networks, Inc. | Method and system for automatically updating the version of a set of files stored on content servers |
US7113962B1 (en) | 1999-06-22 | 2006-09-26 | F5 Networks, Inc. | Method and system for automatically updating content stored on servers connected by a network |
US7707182B1 (en) | 1999-06-22 | 2010-04-27 | F5 Networks, Inc. | Method and system for automatically updating the version of a set of files stored on content servers |
US6473802B2 (en) | 1999-07-15 | 2002-10-29 | F5 Networks, Inc. | Method and system for storing load balancing information with an HTTP cookie |
US7441045B2 (en) | 1999-12-13 | 2008-10-21 | F5 Networks, Inc. | Method and system for balancing load distribution on a wide area network |
US7707289B1 (en) | 2000-01-31 | 2010-04-27 | F5 Networks, Inc. | Method and system for enabling persistent access to virtual servers by an LDNS server |
US7047301B2 (en) | 2000-01-31 | 2006-05-16 | F5 Networks, Inc. | Method and system for enabling persistent access to virtual servers by an LDNS server |
US9077554B1 (en) | 2000-03-21 | 2015-07-07 | F5 Networks, Inc. | Simplified method for processing multiple connections from the same client |
US7343413B2 (en) | 2000-03-21 | 2008-03-11 | F5 Networks, Inc. | Method and system for optimizing a network by independently scaling control segments and data flow |
US9647954B2 (en) | 2000-03-21 | 2017-05-09 | F5 Networks, Inc. | Method and system for optimizing a network by independently scaling control segments and data flow |
US9210163B1 (en) | 2002-09-03 | 2015-12-08 | F5 Networks, Inc. | Method and system for providing persistence in a secure network access |
US8769265B1 (en) | 2002-09-03 | 2014-07-01 | F5 Networks, Inc. | Method and system for providing persistence in a secure network access |
CN100397864C (en) * | 2004-07-07 | 2008-06-25 | 佳能株式会社 | Image processing system and image processing method |
US8059816B2 (en) * | 2005-05-13 | 2011-11-15 | Temple University Of The Commonwealth System Of Higher Education | Secret sharing technique with low overhead information content |
US8326923B1 (en) | 2008-07-08 | 2012-12-04 | F5 Networks, Inc. | Smart prefetching of data over a network |
US7975025B1 (en) | 2008-07-08 | 2011-07-05 | F5 Networks, Inc. | Smart prefetching of data over a network |
US10157280B2 (en) | 2009-09-23 | 2018-12-18 | F5 Networks, Inc. | System and method for identifying security breach attempts of a website |
US11108815B1 (en) | 2009-11-06 | 2021-08-31 | F5 Networks, Inc. | Methods and system for returning requests with javascript for clients before passing a request to a server |
US10721269B1 (en) | 2009-11-06 | 2020-07-21 | F5 Networks, Inc. | Methods and system for returning requests with javascript for clients before passing a request to a server |
US10015286B1 (en) | 2010-06-23 | 2018-07-03 | F5 Networks, Inc. | System and method for proxying HTTP single sign on across network domains |
USRE47019E1 (en) | 2010-07-14 | 2018-08-28 | F5 Networks, Inc. | Methods for DNSSEC proxying and deployment amelioration and systems thereof |
US9083760B1 (en) | 2010-08-09 | 2015-07-14 | F5 Networks, Inc. | Dynamic cloning and reservation of detached idle connections |
US10135831B2 (en) | 2011-01-28 | 2018-11-20 | F5 Networks, Inc. | System and method for combining an access control system with a traffic management system |
US9985976B1 (en) | 2011-12-30 | 2018-05-29 | F5 Networks, Inc. | Methods for identifying network traffic characteristics to correlate and manage one or more subsequent flows and devices thereof |
US10230566B1 (en) | 2012-02-17 | 2019-03-12 | F5 Networks, Inc. | Methods for dynamically constructing a service principal name and devices thereof |
US10097616B2 (en) | 2012-04-27 | 2018-10-09 | F5 Networks, Inc. | Methods for optimizing service of content requests and devices thereof |
US9525632B1 (en) | 2012-05-01 | 2016-12-20 | F5 Networks, Inc. | Minimize recycle SYN issues for split TCP hot flows to improve system reliability and performance |
US9762492B2 (en) | 2012-05-01 | 2017-09-12 | F5 Networks, Inc. | Data flow segment optimized for hot flows |
US9154423B1 (en) | 2012-05-01 | 2015-10-06 | F5 Networks, Inc. | Minimize SYN-flood issues with flow cache while maintaining performance |
US9338095B2 (en) | 2012-05-01 | 2016-05-10 | F5 Networks, Inc. | Data flow segment optimized for hot flows |
US9203771B1 (en) | 2012-07-23 | 2015-12-01 | F5 Networks, Inc. | Hot service flow hardware offloads based on service priority and resource usage |
US9596184B1 (en) | 2012-07-23 | 2017-03-14 | F5 Networks, Inc. | Hot service flow hardware offloads based on service priority and resource usage |
US10375155B1 (en) | 2013-02-19 | 2019-08-06 | F5 Networks, Inc. | System and method for achieving hardware acceleration for asymmetric flow connections |
US10187317B1 (en) | 2013-11-15 | 2019-01-22 | F5 Networks, Inc. | Methods for traffic rate control and devices thereof |
US10015143B1 (en) | 2014-06-05 | 2018-07-03 | F5 Networks, Inc. | Methods for securing one or more license entitlement grants and devices thereof |
US11838851B1 (en) | 2014-07-15 | 2023-12-05 | F5, Inc. | Methods for managing L7 traffic classification and devices thereof |
US10122630B1 (en) | 2014-08-15 | 2018-11-06 | F5 Networks, Inc. | Methods for network traffic presteering and devices thereof |
US10182013B1 (en) | 2014-12-01 | 2019-01-15 | F5 Networks, Inc. | Methods for managing progressive image delivery and devices thereof |
US11895138B1 (en) | 2015-02-02 | 2024-02-06 | F5, Inc. | Methods for improving web scanner accuracy and devices thereof |
US10834065B1 (en) | 2015-03-31 | 2020-11-10 | F5 Networks, Inc. | Methods for SSL protected NTLM re-authentication and devices thereof |
US10505818B1 (en) | 2015-05-05 | 2019-12-10 | F5 Networks. Inc. | Methods for analyzing and load balancing based on server health and devices thereof |
US11757946B1 (en) | 2015-12-22 | 2023-09-12 | F5, Inc. | Methods for analyzing network traffic and enforcing network policies and devices thereof |
US10404698B1 (en) | 2016-01-15 | 2019-09-03 | F5 Networks, Inc. | Methods for adaptive organization of web application access points in webtops and devices thereof |
US10797888B1 (en) | 2016-01-20 | 2020-10-06 | F5 Networks, Inc. | Methods for secured SCEP enrollment for client devices and devices thereof |
US10791088B1 (en) | 2016-06-17 | 2020-09-29 | F5 Networks, Inc. | Methods for disaggregating subscribers via DHCP address translation and devices thereof |
US11063758B1 (en) | 2016-11-01 | 2021-07-13 | F5 Networks, Inc. | Methods for facilitating cipher selection and devices thereof |
US10505792B1 (en) | 2016-11-02 | 2019-12-10 | F5 Networks, Inc. | Methods for facilitating network traffic analytics and devices thereof |
US11496438B1 (en) | 2017-02-07 | 2022-11-08 | F5, Inc. | Methods for improved network security using asymmetric traffic delivery and devices thereof |
US10791119B1 (en) | 2017-03-14 | 2020-09-29 | F5 Networks, Inc. | Methods for temporal password injection and devices thereof |
US10812266B1 (en) | 2017-03-17 | 2020-10-20 | F5 Networks, Inc. | Methods for managing security tokens based on security violations and devices thereof |
US10931662B1 (en) | 2017-04-10 | 2021-02-23 | F5 Networks, Inc. | Methods for ephemeral authentication screening and devices thereof |
US10972453B1 (en) | 2017-05-03 | 2021-04-06 | F5 Networks, Inc. | Methods for token refreshment based on single sign-on (SSO) for federated identity environments and devices thereof |
US11122042B1 (en) | 2017-05-12 | 2021-09-14 | F5 Networks, Inc. | Methods for dynamically managing user access control and devices thereof |
US11122083B1 (en) | 2017-09-08 | 2021-09-14 | F5 Networks, Inc. | Methods for managing network connections based on DNS data and network policies and devices thereof |
US11658995B1 (en) | 2018-03-20 | 2023-05-23 | F5, Inc. | Methods for dynamically mitigating network attacks and devices thereof |
US11044200B1 (en) | 2018-07-06 | 2021-06-22 | F5 Networks, Inc. | Methods for service stitching using a packet header and devices thereof |
Also Published As
Publication number | Publication date |
---|---|
CA2304041C (en) | 2004-06-01 |
AU5318999A (en) | 2000-02-07 |
CA2304041A1 (en) | 2000-01-27 |
WO2000004422A3 (en) | 2000-04-20 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CA2304041C (en) | Method for image processing to facilitate copy protection | |
Celik et al. | Hierarchical watermarking for secure image authentication with localization | |
US5949885A (en) | Method for protecting content using watermarking | |
US5664018A (en) | Watermarking process resilient to collusion attacks | |
Sion et al. | Rights protection for relational data | |
Collberg et al. | Software watermarking: Models and dynamic embeddings | |
Sion et al. | On watermarking numeric sets | |
US20050021966A1 (en) | Method and system for sustainable digital watermarking | |
Li et al. | Constructing a virtual primary key for fingerprinting relational data | |
JP2011091808A (en) | Method for facilitating protection of digital signal | |
Prasad et al. | A secure fragile watermarking scheme for protecting integrity of digital images | |
WO2001023981A1 (en) | Authentification of digital data works using signatures and watermarks | |
Sahoo et al. | Designing an embedded algorithm for data hiding using steganographic technique by file hybridization | |
Ahmed et al. | Information Hiding using LSB technique | |
CA2483992A1 (en) | System and method for digital watermarking of data repository | |
Liu et al. | A block oriented fingerprinting scheme in relational database | |
Ahuja et al. | A survey of digital watermarking scheme | |
EP0888676A1 (en) | Watermarking process resilient to collusion attacks | |
Khanduja et al. | A generic watermarking model for object relational databases | |
Dwivedi et al. | Watermarking techniques for ownership protection of relational databases | |
Gort et al. | Preventing additive attacks to relational database watermarking | |
Yeung et al. | Digital watermarks: Shedding light on the invisible | |
Murugan et al. | A robust watermarking technique for copyright protection for relational databases | |
Jia et al. | Digital watermark-based security technology for geo-spatial graphics data | |
Mazhar et al. | ‘Survey on relational database watermarking employing evolutionary methods |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A2 Designated state(s): AU CA JP |
|
AL | Designated countries for regional patents |
Kind code of ref document: A2 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE |
|
ENP | Entry into the national phase in: |
Ref country code: CA Ref document number: 2304041 Kind code of ref document: A Format of ref document f/p: F Ref document number: 2304041 Country of ref document: CA |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
AK | Designated states |
Kind code of ref document: A3 Designated state(s): AU CA JP |
|
AL | Designated countries for regional patents |
Kind code of ref document: A3 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE |
|
122 | Ep: pct application non-entry in european phase |