Supplying cryptographic algorithm constants to a...

Details Supplying cryptographic algorithm constants to a... Supplying cryptographic algorithm constants to a...

2008-05-07

2011-12-27

Barron, Jr., Gilberto (Department: 2432)

Electrical computers and digital processing systems: support

Multiple computer communication using cryptography

Particular communication authentication technique

C380S262000

Reexamination Certificate

active

08086865

ABSTRACT:
The present invention provides for authenticating a message, A security function is performed upon the message, The message is sent to a target. The output of the security function is sent to the target. At least one publicly known constant is sent to the target. The received message is authenticated as a function of at least a shared key, the received publicly known constants, the security function, the received message, and the output of the security function. If the output of the security function received by the target is the same as the output generated as a function of at least the received message, the received publicly known constants, the security function, and the shared key, neither the message nor the constants have been altered.

REFERENCES:
patent: 6173400 (2001-01-01), Perlman et al.
patent: 6311276 (2001-10-01), Connery et al.
patent: 6832316 (2004-12-01), Sibert
patent: 2004/0083368 (2004-04-01), Gehrmann
patent: 2005/0033988 (2005-02-01), Chandrashekhar et al.

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