Paper 2005/040
Unfairness of a protocol for certified delivery
Juan M. Estevez-Tapiador and Almudena Alcaide
Abstract
Recently, Nenadić \emph{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.
Metadata
- Available format(s)
-
PDF
PS
- Category
- Cryptographic protocols
- Publication info
- Published elsewhere. Technical report
- Keywords
- fair exchangenon-repudiationattacks
- Contact author(s)
- jestevez @ inf uc3m es
- History
- 2005-02-16: revised
- 2005-02-16: received
- See all versions
- Short URL
- https://ia.cr/2005/040
- License
-
CC BY
BibTeX
@misc{cryptoeprint:2005/040,
author = {Juan M. Estevez-Tapiador and Almudena Alcaide},
title = {Unfairness of a protocol for certified delivery},
howpublished = {Cryptology {ePrint} Archive, Paper 2005/040},
year = {2005},
url = {https://eprint.iacr.org/2005/040}
}
