System and method for protecting a computer network against...

Details System and method for protecting a computer network against... System and method for protecting a computer network against...

2005-04-26

2005-04-26

Morse, Gregory (Department: 2134)

Electrical computers and digital processing systems: support

Multiple computer communication using cryptography

Protection at a particular protocol layer

C713S178000, C713S168000, C713S184000, C709S206000

Reexamination Certificate

active

06886102

ABSTRACT:
A system and method are disclosed for determining whether a sender seeking to send a message to a receiving computer system via a network is an authorized sender. A request to communicate is received from the sender. A number N1is selected. A hash value for the number N1is calculated. The hash value is sent to the sender.

REFERENCES:
patent: 5107489 (1992-04-01), Brown et al.
patent: 5790808 (1998-08-01), Seaman
patent: 5892903 (1999-04-01), Klaus
patent: 6049546 (2000-04-01), Ramakrishnan
patent: 08032611 (1996-02-01), None
patent: 2000174794 (2000-06-01), None
Menezes et al., Handbook Applied Cryprography, 1997, CRC Press LLC, pp. 397-405.

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