Authentication system

Details Authentication system Authentication system

1991-11-21

1993-09-28

Cain, David

Cryptography

Particular algorithmic function encoding

Nbs/des algorithm

380 30, H04K 100

Patent

active

052492303

ABSTRACT:
An environment which includes a communications network, user terminals, and an authentication center provides communication services only to legitimate subscribers. The center receives an equipment ID for each terminal and uses a secret key to encrypt the equipment ID with a user ID and an error detection code to form an encrypted block. This block is programmed into an authentication module and sent to the subscriber for installation in the subscriber's terminal. The center sends a public key to authentication nodes of the network. When the subscriber operates the terminal to gain access to the network, a log-on message, which includes the encrypted block and an unencrypted version of the equipment ID, is sent to an authentication node. The authentication node decrypts the encrypted block and evaluates the IDs to determine whether to grant access to services offered by the network.

REFERENCES:
patent: H510 (1988-08-01), Clinch
patent: 4761807 (1988-08-01), Matthews et al.
patent: 4904851 (1990-02-01), Yukino
patent: 4984270 (1991-01-01), LaBounty
patent: 5003595 (1991-03-01), Collins et al.
patent: 5128997 (1992-07-01), Pailles et al.
patent: 5146499 (1992-09-01), Geffrotin

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