Cryptography – Video cryptography – Video electric signal modification
Reexamination Certificate
2005-10-25
2005-10-25
Morse, Gregory (Department: 2134)
Cryptography
Video cryptography
Video electric signal modification
Reexamination Certificate
active
06959089
ABSTRACT:
An apparatus and method are utilized for transmitting data across an interface between a sender and a receiver. The sender and receiver can be provided with a shared key, a receiver—key and a sender—key. A payload message can be combined with the keys to generate a unique message for transmission across the interface. The payload message can be authenticated utilizing the same input and the same algorithm on the receiving end of the transmission. The resulting confirmatory payload message can be utilized with the authenticating payload message to authenticate the payload message.
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Menezes, Oorschott, Vanstone: Handbook of Applied Cyptography, CRC Press Series on Discrete Mathematics and its Applications, pp. 400-402 and 497-499; U.S. Boca Raton, FL, CRC Press, 1997, XP002171432, ISBN: 0-8493-8523-7.
Eskicioglu A.M., Delp, E.J., An Overview of Multimedia Content Protection in Consumer Electronic Devices, pp. 681-699; Signal Processing Image communication, Elsevier Science Publishers, Amsterdam, NL, vol. 16, No. 7, Apr. 2001.
General Instrument Corporation
Morse Gregory
Townsend and Townsend / and Crew LLP
Tran Ellen C
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