Computer system security device

Details Computer system security device Computer system security device

1990-04-30

1993-11-23

Cangialosi, Salvatore

Cryptography

Particular algorithmic function encoding

Nbs/des algorithm

380 4, H04L 900

Patent

active

052651630

ABSTRACT:
A computer system having a power-on password stored in non-volatile memory wherein entry of the power-on password by a system manager permits access to all of the computer functions. The system also has the facility of at least one additional password held in non-volatile memory, wherein entry of the additional password by a user permits the system to boot in a manner preselected by the system manager. Preferably there are available a plurality of additional passwords providing at least two different levels of security access to the system.

REFERENCES:
patent: 4757533 (1988-07-01), Allen et al.
patent: 5012514 (1991-04-01), Renton
patent: 5058164 (1991-10-01), Elmer et al.
patent: 5115508 (1990-05-01), Hatta
patent: 5204966 (1993-04-01), Wittenberg et al.
IBM Technical Disclosure Bulletin, vol. 30, No. 2, Jul. 1987, pp. 725-726, Personal Computer Security Device.
IBM Technical Disclosure Bulletin, vol. 28, No. 6, Nov. 1985, pp. 25-30, Method of Protecting Data on PC.
IBM Technical Disclosure Bulletin, vol. 29, No. 8, Jan. 1987, pp. 3431-3432.

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