Cryptology ePrint Archive: Report 2014/401

Software implementation of an Attribute-Based Encryption scheme

Eric Zavattoni and Luis J. Dominguez Perez and Shigeo Mitsunari and Ana H. Sánchez-Ramírez and Tadanori Teruya and Francisco Rodríguez-Henríquez

Abstract: A ciphertext-policy attribute-based encryption protocol uses bilinear pairings to provide control access mechanisms, where the set of user's attributes is specified by means of a linear secret sharing scheme. In this paper we present the design of a software cryptographic library that achieves record timings for the computation of a 126-bit security level attribute-based encryption scheme. We developed all the required auxiliary building blocks and compared the computational weight that each of them adds to the overall performance of this protocol. In particular, our single pairing and multi-pairing implementations achieve state-of-the-art time performance at the 126-bit security level.

Category / Keywords: attribute-based-encryption, pairing-based protocols, bilinear pairings, scalar multiplication

Date: received 30 May 2014, last revised 1 Jun 2014

Contact author: francisco at cs cinvestav mx

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Version: 20140602:070831 (All versions of this report)

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