Confidential information implementation system and LSI

Details Confidential information implementation system and LSI Confidential information implementation system and LSI

2011-06-07

2011-06-07

Pich, Ponnoreay (Department: 2435)

Cryptography

Key management

Having particular key generator

C380S045000, C380S046000, C380S264000, C711S103000

Reexamination Certificate

active

07957526

ABSTRACT:
A security information implementation system includes a storage section120afor storing first encrypted security information EDK (MK) provided by encrypting final security information DK according to internal security information MK and second encrypted security information EMK (CK) provided by encrypting the internal security information MK according to conversion security information CK and an LSI120bincluding a seed generation section131for storing a first constant value containing address information on which a conversion seed is generated based and a second constant value and a third constant value on which a test conversion seed is generated based and outputting the first constant value and the second constant value or the third constant value as the conversion seed or the test conversion seed in response to a test signal and a mode setup value; a one-way function circuit32for converting the conversion seed or the test conversion seed output from the seed generation section131according to the first encrypted security information EDK (MK) input from the storage section120ato generate the conversion security information CK or test conversion security information; a decryption circuit33for decrypting the second encrypted security information EMK (CK) input from the storage section120ausing the output of the one-way function circuit32as a key; and a decryption circuit34for decrypting the first encrypted security information EDK (MK) input from the storage section120ausing the output of the decryption circuit33as a key.

REFERENCES:
patent: 5201000 (1993-04-01), Matyas et al.
patent: 5559889 (1996-09-01), Easter et al.
patent: 5563950 (1996-10-01), Easter et al.
patent: 6615348 (2003-09-01), Gibbs
patent: 7133524 (2006-11-01), Fujiwara et al.
patent: 7424622 (2008-09-01), Hashimoto et al.
patent: 7545934 (2009-06-01), Fujiwara et al.
patent: 2002/0194476 (2002-12-01), Lewis et al.
patent: 2003/0074571 (2003-04-01), Fujiwara et al.
patent: 2004/0174997 (2004-09-01), Yamamichi et al.
patent: 2005/0018854 (2005-01-01), Yamamoto et al.
patent: 2005/0131990 (2005-06-01), Jewell
patent: 2005/0226410 (2005-10-01), Fujiwara et al.
patent: 2006/0059434 (2006-03-01), Boss et al.
patent: 2006/0101288 (2006-05-01), Smeets et al.
patent: 2006/0265563 (2006-11-01), Goettfert et al.
patent: 2007/0185793 (2007-08-01), George
patent: 2007/0203957 (2007-08-01), Desai et al.
patent: 1 185 022 (2002-03-01), None
patent: 01-270684 (1989-10-01), None
patent: 04-135260 (1992-05-01), None
patent: 2003-101527 (2003-04-01), None
patent: 2004-096666 (2004-03-01), None
patent: 2005-294952 (2005-10-01), None
Japanese Office Action, with English Translation, issued in Japanese Patent Application No. 2005-193948, dated Jan. 14, 2009.
European Search Report issued in European Patent Application No. EP 06116117 dated Jun. 3, 2009.

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