Cryptography – Video cryptography – Video electric signal modification
Reexamination Certificate
2006-05-09
2006-05-09
Barron, Gilberto (Department: 2132)
Cryptography
Video cryptography
Video electric signal modification
C380S201000, C380S226000, C380S223000
Reexamination Certificate
active
07043021
ABSTRACT:
A video source device generates a session key for each transmission session wherein a multi-frame video content is to be transmitted to a video sink device. The video source device uses the session key to generate a successive number of frame keys. The frame keys in turn are used to generate corresponding pseudo random bit sequences for ciphering the corresponding frames to protect the video content from unauthorized copying during transmission. The video sink device practices a complementary approach to decipher the received video content. In one embodiment, both devices are each provided with an integrated block/stream cipher to practice the transmission protection method.
REFERENCES:
patent: 3798360 (1974-03-01), Feistel
patent: 4004089 (1977-01-01), Richard et al.
patent: 4316055 (1982-02-01), Feistel
patent: 4605820 (1986-08-01), Campbell, Jr.
patent: 4607137 (1986-08-01), Jansen et al.
patent: 4613901 (1986-09-01), Gilhousen et al.
patent: 4641102 (1987-02-01), Coulthart et al.
patent: 4953208 (1990-08-01), Ideno
patent: 4991208 (1991-02-01), Walker et al.
patent: 5020106 (1991-05-01), Rabold et al.
patent: 5195136 (1993-03-01), Hardy et al.
patent: 5341425 (1994-08-01), Wasilewski et al.
patent: 5341426 (1994-08-01), Barney et al.
patent: 5509073 (1996-04-01), Monnin
patent: 5533127 (1996-07-01), Luther
patent: 5590194 (1996-12-01), Ryan
patent: 5621799 (1997-04-01), Katta et al.
patent: 5657095 (1997-08-01), Yoshida et al.
patent: 5673319 (1997-09-01), Bellare et al.
patent: 5680131 (1997-10-01), Utz
patent: 5825879 (1998-10-01), Davis
patent: 5852472 (1998-12-01), Prasad et al.
patent: 5862150 (1999-01-01), Lavelle et al.
patent: 5940509 (1999-08-01), Jovanovich et al.
patent: 6005940 (1999-12-01), Kulinets
patent: 6061449 (2000-05-01), Candelore et al.
patent: 6118873 (2000-09-01), Lotspiech et al.
patent: 6167136 (2000-12-01), Chou
patent: 6345101 (2002-02-01), Shukla
patent: 6452959 (2002-09-01), McDonough
patent: 6453304 (2002-09-01), Manabu et al.
patent: 6466669 (2002-10-01), Matsui et al.
patent: 6731758 (2004-05-01), Graunke et al.
patent: 0 599 366 (1993-02-01), None
patent: WO 96-06504 (1996-02-01), None
patent: WO 99/18729 (1999-04-01), None
patent: WO 99/19822 (1999-04-01), None
patent: WO 01-17251 (2001-03-01), None
patent: WO 01/17252 (2001-03-01), None
Bruce Schneier et al., Unbalanced Feistel Networks and Block-Cipher Design, Feb. 1996, Third International Workshop Proceedings, pp. 1-24.
William Stallings, “Cryptography and Network Security”, Jun. 4, 1998, Prentice-Hall, Inc. 2nd Edition, Chapter 3.
Infocus Corporation, Digital Visual Interface (DVI) white paper, Nov. 2001, pp. 1-15.
Silicon Image, High-Bandwidth Digital Content Protection white paper, Feb. 2000, pp. 1-11.
High-Bandwidth Digital Content Protection System, Revision 1.0, Feb. 17, 2000, copyright © 1999-2000 by Intel Corporation, pp. 1-59.
Bruce Schneier, “Applied Cryptography : protocols, algorithms, and source code in C”, Second Edition, Library of Congress, Copyright 1996, Chapters 2-6 and 12-17.
Search Report for PCT/US 00/22785, mailed Dec. 6, 2000, 2 pages.
Search Report for PCT/US 00/22834, mailed Dec. 4, 2000, 1 page.
Written Opinion for PCT/US00/22834; 1 page.
Written Opinion for PCT/US/00/22785; 1 page.
International Preliminary Examination Report PCT/US00/22/34, 6 pages, mailed Nov. 19, 2001.
International Preliminary Examination Report PCT/US00/22785, 7 Pages, mailed Nov. 5, 2001.
Heys, Howard M., “An Analysis of the Statistical Self-synchronization of Stream Ciphers”, IEEE INFORCOM 2001, pp. 897-904.
Heys, Howard M., Delay Characteristics of Statistical Cipher Feedback-Mode, IEEE 2001, pp. 5-9.
Simmons, Gustavus J., Symmetric and Asymmetric Encryption, Computing Surveys, vol. 11, No. 4, Dec. 1979, pp. 305-330.
The Art of Computer Programming, vol. 2/Seminumerical Algorithms, © 1969, Addison-Wesley Publishing Company, Inc., Reading Massachusettts; Menlo Park, California; London; Amsterdam; Don Mills, Ontario; Sydney, pp. 30-31.
Faber Robert W.
Graunke Gary L.
Lee David A.
Barron Gilberto
Blakely , Sokoloff, Taylor & Zafman LLP
Gurshman Grigory
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