Publication Type
Conference Proceeding Article
Version
submittedVersion
Publication Date
9-2004
Abstract
Undeniable signature is an intriguing concept introduced by Chaum and van Antwerpen at Crypto89. In 1999, Lee and Hwang presented two group-oriented undeniable signature schemes with a trusted center. Their schemes are natural generalizations of Chaums zero knowledge undeniable signature scheme proposed in 1990. However, we find that the Lee-Hwang schemes are insecure. In this paper, we demonstrate five effective attacks on their schemes: four of them are insider universal forgeries, in which one dishonest member (maybe colluding with a verifier) can get a valid signature on any chosen massage, and another attack allows a dishonest member to prevent honest members from generating valid signatures. We also suggest heuristic improvements to overcome some of the problems involved in these attacks.
Discipline
Information Security
Research Areas
Cybersecurity
Publication
Trust and Privacy in Digital Business: First International Conference, TrustBus 2004, Zaragoza, Spain, August 30 - September 1: Proceedings
Volume
3184
First Page
289
Last Page
298
ISBN
9783540300793
Identifier
10.1007/978-3-540-30079-3_30
Publisher
Springer
City or Country
Berlin
Citation
WANG, Guilin; ZHOU, Jianying; and DENG, Robert H..
On the Security of the Lee-Hwang Group-Oriented Undeniable Signature Schemes. (2004). Trust and Privacy in Digital Business: First International Conference, TrustBus 2004, Zaragoza, Spain, August 30 - September 1: Proceedings. 3184, 289-298.
Available at: https://ink.library.smu.edu.sg/sis_research/558
Copyright Owner and License
Authors
Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial-No Derivative Works 4.0 International License.
Additional URL
https://doi.org/10.1007/978-3-540-30079-3_30