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Paper: Multipurpose Identity-Based Signcryption : A Swiss Army Knife for Identity-Based Cryptography

Authors:
Xavier Boyen
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URL: http://eprint.iacr.org/2003/163
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Abstract: A combined Identity-Based Signature/Encryption system with multiple security properties is presented. The scheme allows Alice to sign a message and encrypt it for Bob ("confidentiality") in such a way that the ciphertext does not reveal anything about their identities ("anonymity"); upon receipt, Bob is convinced that he is Alice's intended addressee ("authentication") but is unable to prove this to a third party ("unlinkability"); nevertheless, the decrypted message bears a signature by Alice that anyone can verify ("non-repudiation"). The construction is based on the Bilinear Diffie-Hellman assumption, and proved secure in the random oracle model.
BibTeX
@misc{eprint-2003-11877,
  title={Multipurpose Identity-Based Signcryption : A Swiss Army Knife for Identity-Based Cryptography},
  booktitle={IACR Eprint archive},
  keywords={public-key cryptography / ID-based cryptography, signcryption, multiple security properties.},
  url={http://eprint.iacr.org/2003/163},
  note={An extended abstract appears in CRYPTO 2003. eprint@boyen.org 12474 received 8 Aug 2003, last revised 25 Feb 2004},
  author={Xavier Boyen},
  year=2003
}