Paper 2003/243
An Attack on Not-interactive Designated Verifier Proofs for Undeniable Signatures
Guilin Wang
Abstract
At Crypto'89, Chaum and van Antwerpen first introduced the concept of undeniable signatures, which has a special property such that a signature cannot be verified without the signer's cooperation. In 1996, Jakobsson, Sako, and Impagliazzo proposed a not-interactive undeniable signature scheme by employing a new primitive called designated verifier proofs. However, this paper shows that their scheme is insecure by demonstrating a simple attack that allows a dishonest signer to convince a designated verifier receiving invalid signatures. In addition, two intuitive countermeasures are presented.
Metadata
- Available format(s)
-
PDF
PS
- Category
- Public-key cryptography
- Publication info
- Published elsewhere. Technical Report.
- Keywords
- digital signatureundeniable signaturedesignated verifier proof.
- Contact author(s)
- glwang @ i2r a-star edu sg
- History
- 2003-11-26: received
- Short URL
- https://ia.cr/2003/243
- License
-
CC BY
BibTeX
@misc{cryptoeprint:2003/243,
author = {Guilin Wang},
title = {An Attack on Not-interactive Designated Verifier Proofs for Undeniable Signatures},
howpublished = {Cryptology {ePrint} Archive, Paper 2003/243},
year = {2003},
url = {https://eprint.iacr.org/2003/243}
}
