Security  of Wang-Li Threshold Signature Scheme

Lifeng Guo

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 signature secret sharing trusted party
Contact author(s): lfguo @ amss ac cn
History: 2004-11-14: received
Short URL: https://ia.cr/2004/302
License: 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},
      url = {https://eprint.iacr.org/2004/302}
}