Paper 2004/117

Efficient and Forward-Secure Identity-Based Signcryption

Noel McCullagh and Paulo S. L. M. Barreto

Abstract

Several signcryption schemes proposed in the literature are known to lack semantic security, and semantically secure signcryption schemes tend to be more computationally expensive. In fact, devising an efficient signcryption scheme providing both public verifiability and forward security was until now an open problem. In this paper, we show how a particular kind of signcryption scheme may become completely insecure when implemented with certain efficient instantiations of the Tate or Weil pairing. We also address the drawbacks of the secure schemes by proposing efficient, semantically and forward-secure signcryption schemes, in both transferable and non-transferable form, that can be realised on top of any pairing instantiation. As a bonus, we also derive from them a new, efficient identity-based signature scheme.

Metadata
Available format(s)
PDF PS
Category
Public-key cryptography
Publication info
Published elsewhere. Unknown where it was published
Keywords
identity-based cryptosystems
Contact author(s)
pbarreto @ larc usp br
History
2004-11-19: revised
2004-05-17: received
See all versions
Short URL
https://ia.cr/2004/117
License
Creative Commons Attribution
CC BY

BibTeX

@misc{cryptoeprint:2004/117,
      author = {Noel McCullagh and Paulo S.  L.  M.  Barreto},
      title = {Efficient and Forward-Secure Identity-Based Signcryption},
      howpublished = {Cryptology {ePrint} Archive, Paper 2004/117},
      year = {2004},
      url = {https://eprint.iacr.org/2004/117}
}
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