Cryptanalysis of a threshold proxy signature with known signers

Fuw-Yi Yang; Jinn-Ke Jan; Woei-Jiunn Jeng

Paper 2004/313

Cryptanalysis of a threshold proxy signature with known signers

Fuw-Yi Yang, Jinn-Ke Jan, and Woei-Jiunn Jeng

Abstract

A scheme of threshold proxy signature with known signers was proposed by Hwang et al. In their scheme, the receiver can identify the proxy signers that actually generated a proxy signature. Tzeng et al. demonstrated that this signature scheme is insecure and proposed an improvement to mend the information leakage. This paper shows that the improved scheme is still insecure under the original signer¡¦s forgery attack.

Metadata

Available format(s): PDF PS
Category: Cryptographic protocols
Publication info: Published elsewhere. Unknown where it was published
Keywords: proxy signature threshold proxy signature
Contact author(s): jkjan @ cs nchu edu tw
History: 2004-11-17: received
Short URL: https://ia.cr/2004/313
License: CC BY

BibTeX

@misc{cryptoeprint:2004/313,
      author = {Fuw-Yi Yang and Jinn-Ke Jan and Woei-Jiunn Jeng},
      title = {Cryptanalysis of a threshold proxy signature with known signers},
      howpublished = {Cryptology {ePrint} Archive, Paper 2004/313},
      year = {2004},
      url = {https://eprint.iacr.org/2004/313}
}