Efficient attribute-based encryption with hidden access structures

被引：1
|
作者：
School of Communication and Information Engineering, Shanghai Univ., Shanghai [1 ]
200444, China
机构：
来源：
Xi'an Dianzi Keji Daxue Xuebao | / 3卷 / 97-102期
关键词：
Asymmetry pairings - Attribute-based encryptions - Bilinear groups - Ciphertext-policy attribute-based encryptions - Full security - Hidden access structures - The standard model - Without random oracles;
D O I：
10.3969/j.issn.1001-2400.2015.03.017
中图分类号：
学科分类号：
摘要：
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. ©, 2015, Science Press. All right reserved.
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