Paper 2004/302

Security of Wang-Li Threshold Signature Scheme

Lifeng Guo

Abstract

In 2003, Wang et al.[1] proposed a $(t, n)$ threshold signature scheme without a trusted party based on the discrete logarithm problem. In this paper, according to [5]'s attacking method, we show that there are still some security leaks in that scheme, and give some methods of forgery attack. Moreover, we point out this scheme is vulnerable to universal forgery by an insider attacker under reasonable assumptions.

Metadata
Available format(s)
PDF
Category
Cryptographic protocols
Publication info
Published elsewhere. Unknown where it was published
Keywords
threshold signaturesecret sharingtrusted party
Contact author(s)
lfguo @ amss ac cn
History
2004-11-14: received
Short URL
https://ia.cr/2004/302
License
Creative Commons Attribution
CC BY

BibTeX

@misc{cryptoeprint:2004/302,
      author = {Lifeng Guo},
      title = {Security  of Wang-Li Threshold Signature Scheme},
      howpublished = {Cryptology ePrint Archive, Paper 2004/302},
      year = {2004},
      note = {\url{https://eprint.iacr.org/2004/302}},
      url = {https://eprint.iacr.org/2004/302}
}
Note: In order to protect the privacy of readers, eprint.iacr.org does not use cookies or embedded third party content.