Protected cryptographic calculation

Details Protected cryptographic calculation Protected cryptographic calculation

2011-07-19

2011-07-19

Shiferaw, Eleni A (Department: 2436)

Cryptography

Particular algorithmic function encoding

C380S044000

Reexamination Certificate

active

07983414

ABSTRACT:
In a method for protected execution of a cryptographic calculation in which a key with at least two key parameters is drawn on, an integrity check of the key is performed, in order to prevent a cryptographic attack in which conclusions are drawn as to at least one second key parameter by corrupting at least one first key parameter. A further method serves to determine a key for a cryptographic calculation with at least two key parameters provided for use in the first-mentioned method. A computer program product and a portable data carrier have corresponding features. The methods enable particularly good protection of cryptographic calculations against attacks.

REFERENCES:
patent: 4405829 (1983-09-01), Rivest et al.
patent: 4924514 (1990-05-01), Matyas et al.
patent: 5390196 (1995-02-01), Cecil et al.
patent: 5533126 (1996-07-01), Hazard
patent: 5675649 (1997-10-01), Brennan et al.
patent: 5799086 (1998-08-01), Sudia
patent: 5991415 (1999-11-01), Shamir
patent: 6052469 (2000-04-01), Johnson et al.
patent: 6914983 (2005-07-01), Chen et al.
patent: 6934887 (2005-08-01), Baldischweiler
patent: 6959091 (2005-10-01), Sabin
patent: 6965673 (2005-11-01), Boneh et al.
patent: 7227947 (2007-06-01), Seysen
patent: 7248700 (2007-07-01), Seifert et al.
patent: 7415110 (2008-08-01), Lee
patent: 2003/0061498 (2003-03-01), Drexler et al.
patent: 2003/0097628 (2003-05-01), Ngo et al.
patent: 2003/0196096 (2003-10-01), Sutton
patent: 2005/0005147 (2005-01-01), Fischer et al.
patent: 2005/0084096 (2005-04-01), Joye et al.
patent: 689 26 005 (1996-10-01), None
patent: 0 365 065 (1990-02-01), None
patent: 0 798 892 (1997-10-01), None
patent: 2 270 446 (1994-03-01), None
patent: WO 98/37525 (1998-08-01), None
patent: WO 01/48974 (2001-07-01), None
patent: WO 01/61918 (2001-08-01), None
patent: WO 03/034649 (2003-04-01), None
D. Boneh et al., “On the Importance of Checking Cryptographic Protocols for Faults,”Advances in Cryptology—EUROCRYPT '97, LNCS 1233, pp. 37-51 (1997) (XP-002202745).
F. Bao et al., “Breaking Public Key Cryptosystems on Tamper Resistant Devices in the Presence of Transient Faults”,Proc. of 5thInt'l Workshop on Security Protocols, 1997, pp. 115-124, ISBN 3-540-64040-1.
G. Ateniese et al., “New Multiparty Authentication Services and Key Agreement Protocols,”IEEE Journal on Selected Areas in Communications, vol. 18, No. 4, Apr. 2000, pp. 628-639.
Sun Microsystems, Inc., “Java Card™ 2.1.1, Application Programming Interface,” 2000, Palo Alto, CA, USA (220 total pages).
V. Klima et al., “Attack on Private Signature Keys of the OpenPGP format, PGP™ programs and other applications compatible with OpenPGP,” Mar. 2001, pp. 1-20.
W. Fung et al., “Protection of Keys against Modification Attack,”Proc. 2001 IEEE Symposium on Security and Privacy, May 2001, pp. 26-36.
C. Aumüller et al., “Fault Attacks on RSA with CRT: Concrete Results and Practical Countermeasures,”Proc. 4th Int'l Workshop on Cryptographic Hardware and Embedded Systems(CHES 2002), Aug. 2002, pp. 260-275.
W. Rankl et al.; “Smart Card Handbook,” 3rdEd., John Wiley & Sons, Ltd., 2003, pp. 168-175 and 550-556.

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