Cryptanalysis of the RSA-CEGD protocol
Cryptography and Security
2008-12-04 v1
Abstract
Recently, Nenadi\'c 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.
Cite
@article{arxiv.0812.0686,
title = {Cryptanalysis of the RSA-CEGD protocol},
author = {Juan M. E. Tapiador and Almudena Alcaide and Julio C. Hernandez-Castro and Arturo Ribagorda},
journal= {arXiv preprint arXiv:0812.0686},
year = {2008}
}
Comments
8 pages, 1 figure