Cryptanalysis of the RSA-CEGD protocol

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Recently, Nenadić et al. (2004) proposed the RSA-CEGD protocol for certified delivery of e-goods. This is a relatively complex scheme based on verifiable and recoverable encrypted signatures (VRES) to guarantee properties such as strong fairness and non-repudiation, among others. In this paper, we demonstrate how this protocol cannot achieve fairness by presenting a severe attack and also pointing out some other weaknesses.
8 pages, 1 figure

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Cryptography and Security

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http://salesiana.dossiersoluciones.com/handle/123456789/209429

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/0812.0686
 http://arxiv.org/abs/0812.0686

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arXiv