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An Efficient Identity-based Ring Signcryption Scheme

Authors:
FengjiaoWANG
Yuqing ZHANG
Zhenchao ZHU
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URL: http://eprint.iacr.org/2008/254
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Abstract: ID-based ring signcryption schemes (IDRSC) are usually derived from bilinear parings, a powerful but computationally expensive primitive. The number of paring computations of all existing ID-based ring signcryption schemes from bilinear pairings grows linearly with the group size, which makes the efficiency of ID-based schemes over traditional schemes questionable. In this paper, we present a new identity-based ring signcryption scheme, which only takes four pairing operations for any group size and the scheme is proven to be indistinguishable against adaptive chosen ciphertext ring attacks (IND-IDRSC-CCA2) and secure against an existential forgery for adaptive chosen messages attacks (EF-IDRSC-ACMA).
BibTeX
@misc{eprint-2008-17931,
  title={An Efficient Identity-based Ring Signcryption Scheme},
  booktitle={IACR Eprint archive},
  keywords={cryptographic protocols / Identity-based cryptography, ring signcryption, bilinear pairing},
  url={http://eprint.iacr.org/2008/254},
  note={ chao0121@126.com 14034 received 3 Jun 2008},
  author={FengjiaoWANG and Yuqing ZHANG and Zhenchao ZHU},
  year=2008
}