Method and apparatus for data security for a computer

Details Method and apparatus for data security for a computer Method and apparatus for data security for a computer

1997-04-29

1998-11-03

Beausoliel, Jr., Robert W.

Cryptography

Key management

Having particular key generator

380 4, 380 25, G06F 1300, H04L 900, H04K 100

Patent

active

058322140

ABSTRACT:
A secure password log-in system for a computer having a keyboard with a keyboard data link to a keyboard controller comprises a data diverter circuit interposed in the keyboard data link between the keyboard and the keyboard controller; a boot read-only memory (ROM) having at least one pre-stored password for comparison with a password entered by a user; a boot controller connected to the boot ROM; and a bypass data link between the data diverter circuit and the boot controller. The boot controller, executing a boot routine from the boot ROM, causes entered keystrokes constituting a password to be diverted via the bypass data link to the boot controller.

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patent: 5012514 (1991-04-01), Renton
patent: 5265163 (1993-11-01), Golding et al.
patent: 5355414 (1994-10-01), Hale et al.
patent: 5402492 (1995-03-01), Goodman et al.
Grech, Security Off the Shelf, PC-Computing, Sep. 1992, at 246.
Somerson, Spy-proof Your PC: 13 Ingenious Ways to Keep Your System Secure, PC-Computing, Sep. 1992, at 218.

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