Cryptology ePrint Archive: Report 2008/252

Provable Security of Digital Signatures in the Tamper-Proof Device Model

Nick Varnovsky

Abstract: We study security of digital signature schemes in tamper-proof device model. In this model each participant of the protocol has access to a tamper-proof device to encrypt hash values. This substitutes commonly used random oracle. In the tamper-proof device model we demonstrate security of a modified version of the GOST signature scheme.

Category / Keywords: cryptographic protocols / e-signature, tamper-proof device, GOST signature scheme, provable security

Date: received 2 Jun 2008

Contact author: mathdep at iisi msu ru

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Version: 20080603:031529 (All versions of this report)

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