Method and apparatus for preventing cloning of security...

Details Method and apparatus for preventing cloning of security... Method and apparatus for preventing cloning of security...

2003-03-31

2008-05-06

Peeso, Thomas R. (Department: 2132)

Electrical computers and digital processing systems: support

Reconfiguration

C713S155000, C713S161000

Reexamination Certificate

active

07370192

ABSTRACT:
A method for preventing cloning of a genuine security element is described. The method includes associating a random number generator (RNG) in the security element with a portion of a non-volatile memory (NVM) in the security element, and activating the RNG to automatically write, during a normal operation mode of the security element, a new random number into the portion of the NVM whenever an attempt is made to write into the portion of the NVM. Any unit other than the RNG is preferably prevented from writing data into the portion of the NVM during the normal operation mode of the security element. Related apparatus and method are also described.

REFERENCES:
patent: 5832090 (1998-11-01), Raspotnik
patent: 6012636 (2000-01-01), Smith
patent: 2002/0047049 (2002-04-01), Perron et al.
patent: WO 96/21225 (1996-07-01), None
A. Menezes, P. van Oorschot, and S. Vanstone,Handbook of Applied Cryptography, Chapter 5, Pseudorandom Bits and Sequences (CRC Press, 1996).

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