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

J4 ›› 2015, Vol. 42 ›› Issue (3): 97-102.doi: 10.3969/j.issn.1001-2400.2015.03.017

隐藏访问结构的高效基于属性加密方案

解理;任艳丽

(上海大学通信与信息工程学院，上海 200444)

收稿日期:2014-01-08 出版日期:2015-06-20 发布日期:2015-07-27
通讯作者: 任艳丽
作者简介:解理(1990-)，男，上海大学硕士研究生，E-mail: xieli@shu.edu.cn．
基金资助:
国家自然科学基金资助项目( 61202367)；上海市自然科学基金资助项目( 12ZR1443700)；上海市教委创新基金资助项目(14YZ020)

Efficient attribute-based encryption with hidden access structures

XIE Li;REN Yanli

(School of Communication and Information Engineering, Shanghai Univ., Shanghai 200444, China)

Received:2014-01-08 Online:2015-06-20 Published:2015-07-27
Contact: REN Yanli

摘要/Abstract

摘要：

现有隐藏访问结构的基于属性加密方案基于合数阶群或仅在标准模型中是选择安全的．使用非对称双线性映射，提出了一个能在素数阶群中实现隐藏访问结构的密文策略基于属性加密方案．基于非对称DBDH(Decisional Bilinear Diffie-Hellman)假设，在标准模型下证明该方案是完全安全的，而且用户私钥、密文长度及解密过程双线性对计算次数均为常数．与合数阶群的方案相比，这种方案同时提高了隐藏访问结构基于属性加密方案的安全性和实现效率．

关键词: 基于属性加密, 隐藏访问结构, 非对称双线性群, 完全安全

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

解理;任艳丽. 隐藏访问结构的高效基于属性加密方案[J]. J4, 2015, 42(3): 97-102.

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

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隐藏访问结构的高效基于属性加密方案

Efficient attribute-based encryption with hidden access structures

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