Security information packaging system, LSI, and security...

Details Security information packaging system, LSI, and security... Security information packaging system, LSI, and security...

2005-03-30

2009-06-09

Tran, Ellen (Department: 2434)

Cryptography

Key management

Having particular key generator

Reexamination Certificate

active

07545934

ABSTRACT:
To make the strict management of the security information possible, in a security information packaging system120which comprises a storing portion120afor storing first encrypted security information EDK(MK)/address obtained by encrypting final security information DK by using internal security information MK and second encrypted security information EMK(CK)/address obtained by encrypting the internal security information MK by using converted security information CK, and an LSI120b, the LSI120bincludes a seed generating portion131for storing a first constant IDfuse/address containing address information and serving as a generation source of a conversion seed and a second constant IDtst serving as a generation source of a conversion seed for testing and a third constant Const and then outputting either the conversion seed or the conversion seed for testing in response to a test signal.

REFERENCES:
patent: 6240516 (2001-05-01), Vainsencher
patent: 2002/0129246 (2002-09-01), Blumenau et al.
patent: 2002/0194476 (2002-12-01), Lewis et al.
patent: 2003/0074571 (2003-04-01), Fujiwara
patent: 2006/0101288 (2006-05-01), Smeets et al.
patent: 01-270684 (1989-10-01), None
patent: 04-135260 (1992-05-01), None
patent: 11-215117 (1999-08-01), None
patent: 2003-101527 (2003-04-01), None
Menezes, et al, “Handbook of Applied Cryptography”, CRC Press Series on Discrete Mathematics and Its Applications, 1997, pp. 567-570, 577-581, 546-553, XP002356115, Boca Raton, Florida.
Japanese Notification of Reasons for Rejection, w/ English translation thereof, issued in Japanese Patent Application No. JP 2004-103404 dated Jan. 8, 2009.

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