Electrical computers and digital processing systems: support – Multiple computer communication using cryptography – Particular communication authentication technique
Reexamination Certificate
2011-08-23
2011-08-23
El Hady, Nabil M (Department: 2434)
Electrical computers and digital processing systems: support
Multiple computer communication using cryptography
Particular communication authentication technique
C713S002000, C713S168000, C713S169000, C713S193000, C711S152000, C711S163000
Reexamination Certificate
active
08006095
ABSTRACT:
System and method for authenticating data or program code via a configurable signature. Configuration information is retrieved from a protected first memory, e.g., an on-chip register, where the configuration information specifies a plurality of non-contiguous memory locations that store the signature, e.g., in an on-chip memory trailer. The signature is retrieved from the plurality of non-contiguous memory locations based on the configuration information, where the signature is useable to verify security for a system. The signature corresponds to specified data and/or program code stored in a second memory, e.g., in off-chip ROM. The specified data and/or program code may be copied from the second memory to a third memory, and a signature for the specified data and/or program code calculated based on the configuration information. The calculated signature may be compared with the retrieved signature to verify the specified data and/or program code.
REFERENCES:
patent: 5442704 (1995-08-01), Holtey
patent: 5931853 (1999-08-01), McEwen et al.
patent: 6061741 (2000-05-01), Murphy et al.
patent: 6134597 (2000-10-01), Rieth et al.
patent: 6460050 (2002-10-01), Pace et al.
patent: 6735696 (2004-05-01), Hannah
patent: 6981176 (2005-12-01), Fruehling et al.
patent: 7069452 (2006-06-01), Hind et al.
patent: 7096370 (2006-08-01), Klein
patent: 7139890 (2006-11-01), Moran et al.
patent: 7712131 (2010-05-01), Lethe
patent: 2002/0009285 (2002-01-01), Safadi et al.
patent: 2002/0166059 (2002-11-01), Rickey et al.
patent: 2003/0210783 (2003-11-01), Filippi
patent: 2004/0025010 (2004-02-01), Azema et al.
patent: 2005/0076226 (2005-04-01), Boivie et al.
patent: 2005/0228993 (2005-10-01), Silvester et al.
patent: 2006/0112241 (2006-05-01), Weiss et al.
patent: 2006/0129848 (2006-06-01), Paksoy et al.
patent: 2006/0137015 (2006-06-01), Fahrny et al.
patent: 2006/0272022 (2006-11-01), Loukianov et al.
patent: 2006/0282899 (2006-12-01), Raciborski
patent: 2007/0005992 (2007-01-01), Schluessler et al.
patent: 2007/0006150 (2007-01-01), Walmsley
patent: 2007/0226505 (2007-09-01), Brickell
patent: 2008/0034264 (2008-02-01), Kaabouch et al.
patent: 2008/0126810 (2008-05-01), Chiu
patent: 2010/0275029 (2010-10-01), Little et al.
Berenbaum Alan D.
Weiss Raphael
El Hady Nabil M
Hood Jeffrey C.
Meyertons Hood Kivlin Kowert & Goetzel P.C.
Standard Microsystems Corporation
Williams Mark S.
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