Failsafe security system and method

Details Failsafe security system and method Failsafe security system and method

1997-04-07

1999-11-30

Laufer, Pinchus M.

Cryptography

Key management

Having particular key generator

380 2, 380 4, H04K 100, H04L 900

Patent

active

059956283

ABSTRACT:
Controllable functions (210, 220, 230) and controllable connection managers (212, 222, 216, 226) are used to provide a fail-safe security system implemented on a single processor (200). Red subsystems, black subsystems and clear bypass subsystems ensure separation between red data and black data. Connection managers (212, 222, 216, 226) are used to isolate and control red data ports (214), black data ports (224), red crypto ports (218), and black crypto ports (228). Subsystems are configured to control data flow, provide data separation, access control and prevent single failures from compromising security system (200). Each subsystem is managed separately, and each subsystem has unique access protection provided by controller (202). Within security system (200), the subsystems are kept separate. Functional separation of the red data memory and black data memory is maintained to provide fail-safe data isolation.

REFERENCES:
patent: 4368357 (1983-01-01), Gurak
patent: 4987595 (1991-01-01), Marino, Jr. et al.
patent: 5029206 (1991-07-01), Marino, Jr. et al.
patent: 5365591 (1994-11-01), Carswell et al.

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