Method and apparatus for augmenting authentication in a...

Details Method and apparatus for augmenting authentication in a... Method and apparatus for augmenting authentication in a...

2002-09-27

2009-10-06

Revak, Christopher A (Department: 2431)

Electrical computers and digital processing systems: support

Multiple computer communication using cryptography

Particular communication authentication technique

C726S014000

Reexamination Certificate

active

07600118

ABSTRACT:
In a cryptographic system, a nonce is removed from a communication stream. The nonce is encrypted based on a shared secret. The encrypted nonce is inserted into the communication stream. The encrypted nonce is removed from the communication stream. The encrypted nonce is decrypted based on the shared secret formed by an authenticated key exchange. The decrypted nonce is inserted into the communication stream. The nonce may be an Anvalue generated by a HDCP function. The authenticated key exchange may use Diffie-Hellman Key Exchange.

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