Security system for a stand-alone computer

Details Security system for a stand-alone computer Security system for a stand-alone computer

1993-06-18

1995-03-28

Barron, Jr., Gilberto

Cryptography

Particular algorithmic function encoding

Nbs/des algorithm

380 4, H04L 932

Patent

active

054024927

ABSTRACT:
A security system for stand alone and portable computer hosts which utilizes both a hardware key and a password key to enable-access to the computer host. The entry of the password key and the hardware key is monitored by the keyboard controller. The keyboard controller alters a status bit during the POST portion of the host code if access is granted. The host security is divided into two levels of security, a first administrative level and a second user level. The administrative level is accessible by the entry of a first password or by the hardware key and enables access to all levels of the host SET-UP configuration. The user level is accessible by the entry of a second password and only enables access to a limited portion of the setup configuration.

REFERENCES:
patent: 4942606 (1990-07-01), Kaiser et al.
patent: 5212729 (1993-05-01), Schafer
patent: 5222133 (1993-06-01), Chou et al.
patent: 5265163 (1993-11-01), Golding et al.
patent: 5297200 (1994-03-01), Murray

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