JP Journal of Algebra, Number Theory and Applications
Volume 40, Issue 1, Pages 29 - 90
(February 2018) http://dx.doi.org/10.17654/NT040010029 |
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A PROOF OF SECURITY FOR A KEY-POLICY RS-ABE SCHEME
Federico Giacon, Riccardo Aragona and Massimiliano Sala
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Abstract: A revocable-storage attribute-based encryption (RS-ABE) scheme is an encryption scheme which extends attribute-based encryption by introducing user revocation. A key-policy RS-ABE scheme links each key to an access structure. We propose a new key-policy RS-ABE scheme in composite order bilinear groups under variants of subgroup decision and composite Diffie-Hellman assumptions and we prove its security in terms of indistinguishability under a chosen-plaintext attack (IND-CPA). |
Keywords and phrases: key-policy, attribute-based encryption, indistinguishability under a chosen-plaintext attack, composite order bilinear group, subgroup decision problem, composite Diffie-Hellman problem. |
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