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Title:
Key-policy Attribute-based Encryption for Boolean Circuits from Bilinear Maps
Authors: Ferucio Laurentiu Tiplea, Constantin Catalin Dragan
Abstract:We propose the first Key-policy Attribute-based Encryption (KP-ABE) scheme for (monotone) Boolean circuits based on bilinear maps. The construction is based on secret sharing and just one bilinear map, and can be viewed as an extension of the KP-ABE scheme in [7]. Selective security of the proposed scheme in the standard model is proved, and comparisons with the scheme in [5] based on leveled multilinear maps, are provided. Thus, for Boolean circuits representing multilevel access structures, our KP-ABE scheme is more efficient than the one in [5].
ePrint: https://eprint.iacr.org/2014/608
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