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Paper: Secure and {\sl Practical} Identity-Based Encryption

Authors:
David Naccache
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URL: http://eprint.iacr.org/2005/369
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Abstract: In this paper, we present a variant of Waters' Identity-Based Encryption scheme with a much smaller public-key size (only a few kilobytes). We show that this variant is semantically secure against passive adversaries in the standard model.\smallskip In essence, the new scheme divides Waters' public key size by a factor $\ell$ at the cost of (negligibly) reducing security by $\ell$ bits. Therefore, our construction settles an open question asked by Waters and constitutes the first fully secure {\sl practical} Identity-Based Encryption scheme.
BibTeX
@misc{eprint-2005-12703,
  title={Secure and {\sl Practical} Identity-Based Encryption},
  booktitle={IACR Eprint archive},
  keywords={public-key cryptography / IBE, Waters, Identity},
  url={http://eprint.iacr.org/2005/369},
  note={ david.naccache@ens.fr 13071 received 15 Oct 2005},
  author={David Naccache},
  year=2005
}