隐藏访问结构的高效基于属性加密方案

doi:10.3969/j.issn.1001-2400.2015.03.017

Abstract

Abstract:

Currently, Attribute-Based Encryption (ABE) schemes with Hidden Access Structures are proposed in groups of a composite order or only proved selectively secure without random oracles. Using asymmetric pairings, an anonymous ciphertext-policy attribute-based encryption scheme is proposed in a prime order bilinear group in this paper. The scheme is proved fully secure under the standard model based on the asymmetric decisional bilinear Diffie-Hellman (DBDH) assumption. Moreover, it has a constant size private key, a ciphertext and the number of pairing operations. The proposed scheme improves the security and efficiency of ABE schemes with hidden access structures when compared with the ones in groups of a composite order.

Key words: attribute-based encryption, hidden access structures, asymmetry pairings, full security

XIE Li;REN Yanli. Efficient attribute-based encryption with hidden access structures[J].J4, 2015, 42(3): 97-102.

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Efficient attribute-based encryption with hidden access structures

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