(Convertible) Undeniable Signatures without Random Oracles

Tsz Hon Yuen; Man Ho Au; Joseph K.  Liu; Willy Susilo

Paper 2007/386

(Convertible) Undeniable Signatures without Random Oracles

Tsz Hon Yuen, Man Ho Au, Joseph K. Liu, and Willy Susilo

Abstract

We propose a convertible undeniable signature scheme without random oracles. Our construction is based on Waters' and Kurosawa and Heng's schemes that were proposed in Eurocrypt 2005. The security of our scheme is based on the CDH and the decision linear assumption. Comparing only the part of undeniable signatures, our scheme uses more standard assumptions than the existing undeniable signatures without random oracles due to Laguillamie and Vergnaud.

Metadata

Available format(s): PDF PS
Category: Public-key cryptography
Publication info: Published elsewhere. Revised version of the paper in ICICS 2007
Keywords: undeniable signature
Contact author(s): thy738 @ uow edu au
History: 2009-09-25: revised; 2007-10-04: received; See all versions
Short URL: https://ia.cr/2007/386
License: CC BY

BibTeX

@misc{cryptoeprint:2007/386,
      author = {Tsz Hon Yuen and Man Ho Au and Joseph K.  Liu and Willy Susilo},
      title = {(Convertible) Undeniable Signatures without Random Oracles},
      howpublished = {Cryptology ePrint Archive, Paper 2007/386},
      year = {2007},
      note = {\url{https://eprint.iacr.org/2007/386}},
      url = {https://eprint.iacr.org/2007/386}
}