Apparatus and method for ciphering/deciphering a signal in a...

Electrical computers and digital processing systems: support – Multiple computer communication using cryptography – Having particular address related cryptography

Reexamination Certificate

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Details

C713S151000, C380S210000, C380S240000

Reexamination Certificate

active

07904714

ABSTRACT:
In a communication system, second encryption information is generated using first encryption information when data to be transmitted is generated. The data is encrypted using the second encryption information and third encryption information. A signal including the encrypted data and the first encryption information is generated and transmitted.

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