Paper 2006/346

Generic Transformation to Strongly Unforgeable Signatures

Qiong Huang, Duncan S. Wong, and Yiming Zhao

Abstract

Recently, there are several generic transformation techniques proposed for converting unforgeable signature schemes (the message in the forgery has not been signed yet) into strongly unforgeable ones (the message in the forgery could have been signed previously). Most of the techniques are based on trapdoor hash functions and all of them require adding supplementary components onto the original key pair of the signature scheme. In this paper, we propose a new generic transformation which converts \emph{any} unforgeable signature scheme into a strongly unforgeable one, and also keeps the key pair of the signature scheme unchanged. Our technique is based on \emph{strong one-time signature schemes}. We show that they can be constructed efficiently from any one-time signature scheme that is based on one-way functions. The performance of our technique also compares favorably with that of those trapdoor-hash-function-based ones. In addition, this new generic transformation can also be used for attaining strongly unforgeable signature schemes in other cryptographic settings which include certificateless signature, identity-based signature, and several others. To the best of our knowledge, similar extent of versatility is not known to be supported by any of those comparable techniques. Finally and of independent interest, we show that our generic transformation technique can be modified to an \emph{on-line/off-line} signature scheme, which possesses a very efficient signing process.

Note: This is the full version.

Metadata
Available format(s)
PDF
Category
Public-key cryptography
Publication info
Published elsewhere. ACNS 2007
Keywords
digital signaturesstrong unforgeability
Contact author(s)
csqhuang @ cityu edu hk
History
2007-03-21: last of 2 revisions
2006-10-20: received
See all versions
Short URL
https://ia.cr/2006/346
License
Creative Commons Attribution
CC BY

BibTeX

@misc{cryptoeprint:2006/346,
      author = {Qiong Huang and Duncan S.  Wong and Yiming Zhao},
      title = {Generic Transformation to Strongly Unforgeable Signatures},
      howpublished = {Cryptology ePrint Archive, Paper 2006/346},
      year = {2006},
      note = {\url{https://eprint.iacr.org/2006/346}},
      url = {https://eprint.iacr.org/2006/346}
}
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