Personal computer access control system

Details Personal computer access control system Personal computer access control system

1993-10-21

1995-07-11

Cain, David C.

Cryptography

Particular algorithmic function encoding

Nbs/des algorithm

380 23, 380 4, H04K 100

Patent

active

054328519

ABSTRACT:
An access control system which uses a password token scheme for controlling user access to data within computer systems. The key component in the access control system is an optical token card that is capable of receiving optically encoded information directly from the CRT display of a standard personal computer and processing the information for use in identification and authentication procedures, cryptographic key management schemes, and administrative procedures such as maintaining audit trails. This design permits the use of much longer strings of challenge input data without the addition of peripheral readers to the system.

REFERENCES:
patent: 4599489 (1986-07-01), Cargile
patent: 4890323 (1989-12-01), Beker et al.
patent: 4910775 (1990-03-01), Audebert et al.
patent: 5060263 (1991-10-01), Bosen et al.
patent: 5136644 (1992-08-01), Audebert et al.
patent: 5323465 (1994-06-01), Avarne

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