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Attribute-Based Encryption with Non-Monotonic Access Structures
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Abstract: | We construct an Attribute-Based Encryption (ABE) scheme that allows a user's private key to be expressed in terms of any access formula over attributes. Previous ABE schemes were limited to expressing only monotonic access structures. We provide a proof of security for our scheme based on the Decisional Bilinear Diffie-Hellman (BDH) assumption. Furthermore, the performance of our new scheme compares favorably with existing, less-expressive schemes. |
BibTeX
@misc{eprint-2007-13603, title={Attribute-Based Encryption with Non-Monotonic Access Structures}, booktitle={IACR Eprint archive}, keywords={public-key cryptography /}, url={http://eprint.iacr.org/2007/323}, note={Full paper of an extended abstract that will appear at CCS 2007 bwaters@csl.sri.com 13741 received 16 Aug 2007}, author={Rafail Ostrovsky and Amit Sahai and Brent Waters}, year=2007 }