Electrical computers and digital processing systems: support – Data processing protection using cryptography – By stored data protection
Reexamination Certificate
2011-04-12
2011-04-12
Cervetti, David García (Department: 2436)
Electrical computers and digital processing systems: support
Data processing protection using cryptography
By stored data protection
C713S192000, C380S028000
Reexamination Certificate
active
07925896
ABSTRACT:
Apparatus and method to scramble data prior to placing it on a bus or in memory uses embedded hardware keys for encryption/decryption. The hardware keys may be used in addition to software encryption. Different hardware keys may be used to process most significant bits and least significant bits of a data word. Different hardware keys may be used to process messages from/to different channels. The hardware key may be comprise a series of fixed logic cells.
REFERENCES:
patent: 4747139 (1988-05-01), Taaffe
patent: 6084969 (2000-07-01), Wright et al.
patent: 6278783 (2001-08-01), Kocher et al.
patent: 6523119 (2003-02-01), Pavlin et al.
patent: 6687683 (2004-02-01), Harada et al.
patent: 6690795 (2004-02-01), Richards
patent: 6920221 (2005-07-01), Faber et al.
patent: 6922785 (2005-07-01), Brewer et al.
patent: 7024564 (2006-04-01), Pavlin et al.
patent: 7093295 (2006-08-01), Saito
patent: 7120799 (2006-10-01), Leung et al.
patent: 7231373 (2007-06-01), Kidd et al.
patent: 7278016 (2007-10-01), Detrick et al.
patent: 7478235 (2009-01-01), England et al.
patent: 7636844 (2009-12-01), Bajikar
patent: 2001/0056539 (2001-12-01), Pavlin et al.
patent: 2002/0108051 (2002-08-01), Fougeroux et al.
patent: 2003/0110388 (2003-06-01), Pavlin et al.
patent: 2003/0177401 (2003-09-01), Arnold
patent: 2005/0114697 (2005-05-01), Cornell et al.
patent: 2005/0177504 (2005-08-01), Crosson Smith
patent: 2005/0232415 (2005-10-01), Little et al.
patent: 2005/0289355 (2005-12-01), Kitariev et al.
patent: 2006/0041934 (2006-02-01), Hetzler
patent: 2006/0067528 (2006-03-01), Kimura
patent: 2006/0242465 (2006-10-01), Cruzado et al.
patent: 2006/0242696 (2006-10-01), Cruzado et al.
patent: 2007/0043978 (2007-02-01), Cruzado et al.
patent: 2007/0044158 (2007-02-01), Cruzado et al.
patent: 2007/0192874 (2007-08-01), Tucker
patent: 2006295405 (2006-10-01), None
Morozov et al., Hardware Key for Inforamtion Systems Users Authentification, 2004, TCSET, ACM.
Cilardo et al., An FPGA-based Key-Store for Improving the Dependability of Security Services, 2005, IEEE.
“DES Encryption,” at http://www.tropsoft.com/strongenc/des.htm.
“Triple DES” at http://www.tropsoft.com/strongenc/des3.htm.
U.S. Appl. No. 11/859,131, filed Sep. 21, 2007.
Elder Garry R.
Thodur Ramanujam
Brady III Wade J.
Cervetti David García
Patti John J.
Telecky , Jr. Frederick J.
Texas Instruments Incorporated
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