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A Formal Treatment of Non-repudiation Protocols
IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2004/02/01
Print ISSN: 0916-8508
Type of Manuscript: PAPER
Category: Information Security
non-repudiation, digital signatures, concurrent composition, universal composition,
Full Text: PDF(187.1KB)>>
Non-repudiation is a basic security requirement for electronic business applications to protect against a sender's false denial of having created and sent a message. Typically non-repudiation protocols are constructed based on digital signatures. However, there has been no theoretical treatment of such non-repudiation protocols. In this paper, we provide a formal security definition of non-repudiation protocols and analyze the security of a signature-based protocol. Our security definition and analysis are based on Canetti's framework of universally composable security.