Wireless proximity containment security

Details Wireless proximity containment security Wireless proximity containment security

1996-05-20

1998-01-27

Hua, Ly V.

Cryptography

Key management

Having particular key generator

380 4, 380 25, H04L 900

Patent

active

057129738

ABSTRACT:
A personal computer system has security features enabling control over access to data retained in such system. The system cooperates with a transmitter of radiation having a predefined characteristic. A radiation detector within the system detects such radiation and produces an alarm signal when detection fails or is lost. The alarm signal is retained and triggers security logic cooperating with power-on-sequence logic to prevent the system from becoming operative. It is preferred to also provide an erasable memory element that when switched to an active state stores a privileged-access password. Logic is provided to cooperate with such element and override the security logic when the correct password is input to the system.
As an added security feature the transmitter may be deactivated if an intrusion is detected at the site to shut down all systems responding to the radiation in the security zone.

REFERENCES:
patent: 4494114 (1985-01-01), Kaisk
patent: 5022077 (1991-06-01), Bealkowski et al.
patent: 5111185 (1992-05-01), Kozaki
patent: 5117457 (1992-05-01), Comerford et al.
patent: 5388156 (1995-02-01), Blackledge, Jr. et al.
patent: 5574786 (1996-11-01), Dayan et al.

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