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Paper: Ciphertext-Policy Attribute-Based Encryption: An Expressive, Efficient, and Provably Secure Realization

Authors:
Brent Waters
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URL: http://eprint.iacr.org/2008/290
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Abstract: We present new techniques for realizing Ciphertext-Policy Attribute Encryption (CP-ABE) under concrete and noninteractive cryptographic assumptions. Our solutions allow any encryptor to specify access control in terms of an LSSS matrix, $M$, over the attributes in the system. We present three different constructions that allow different tradeoffs between the systems efficiency and the complexity of the assumptions used. All three constructions use a common methodology of ``directly'' solving the CP-ABE problem that enable us to get much better efficiency than prior approaches.
BibTeX
@misc{eprint-2008-17967,
  title={Ciphertext-Policy Attribute-Based Encryption: An Expressive, Efficient, and Provably Secure Realization},
  booktitle={IACR Eprint archive},
  keywords={},
  url={http://eprint.iacr.org/2008/290},
  note={ bwaters@csl.sri.com 14123 received 27 Jun 2008, last revised 1 Sep 2008},
  author={Brent Waters},
  year=2008
}