Tamper detection system for securing data

Details Tamper detection system for securing data Tamper detection system for securing data

2005-05-17

2005-05-17

Barron, Gilberto (Department: 2132)

Electrical computers and digital processing systems: support

Multiple computer communication using cryptography

Protection at a particular protocol layer

C713S194000, C380S052000, C257S922000

Reexamination Certificate

active

06895509

ABSTRACT:
A tamper detection system includes a trigger mechanism system and a detection circuit that operate in combination to protect an integrated circuit from attack. The detection circuit connects to the trigger mechanism system that is basically a protective mesh that consists of two separate loops of wire held in close proximity to each other and an optional ground layer. The mesh is such that an attempted penetration is highly likely to cause an open of either loop or a short of one loop to the other. The detection system recognizes shorts and opens in the mesh. The detection circuit is intended to be very simple in its operation it that it does not require a sophisticated stimulus and response set to operate. It is designed to be polled on a regular basis for indications of a change in its operation.

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Fips Pub 140-2 Federal Information Processing Standards Publication—Security Requirements for Cryptographic Modules, Issued May 25, 2001.

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