一个适用于云计算环境的高效属性加密方案

一个适用于云计算环境的高效属性加密方案 An Efficient Attribute-Based Encryption Scheme for Cloud Computing 张宇 ZHANG Yu 1 2 first-author 陈晶 CHEN Jing 1 杜瑞颖 DU Ruiying 1 周庆 ZHOU Qing 2 王文武 WANG Wenwu 1 武汉大学计算机学院 武汉大学计算机学院 Science and Technology on Information Assurance Laboratory Science and Technology on Information Assurance Laboratory 信息保障技术重点实验室 信息保障技术重点实验室 School of Computer,Wuhan University School of Computer,Wuhan University 针对云计算环境下成员关系复杂多变的特点,本文在属性加密机制CP-ABE-DM的基础上,提出了一个安全的属性加密机制S-CP-ABE-DM,并在标准模型下给出了安全性证明.S-CP-ABE-DM继承了CP-ABE-DM的优点,支持动态成员管理和任意属性值,修补了CP-ABE-DM的安全漏洞,能够抵御本文构造的针对CP-ABEDM的攻击.实验结果显示与已有的属性加密方案相比,S-CP-ABE-DM更适合用于保护云计算环境下用户数据的安全性和隐私性. According to the complex membership under cloud computing environment,this paper proposes a secure attribute-based encryption scheme S-CP-ABE-DM based on CP-ABE-DM.Besides,we prove in the standard model that our scheme is secure.S-CP-ABE-DM inherits the advantages of CP-ABE-DM,supports dynamic membership and arbitrary-state attributes.S-CP-ABE-DM also avoids the security vulnerability of CP-ABE-DM,resists the attack on CP-ABE-DM constructed by this paper.Compared with the existing schemes,S-CP-ABE-DM is more suitable to protect the security and privacy of user data in cloud computing environment. 云计算 属性加密 动态成员管理 任意属性值 双线性对 cloud computing attribute-based encryption dynamic membership arbitrary-state attributes bilinear pairing 10.14188/j.1671-8836.2015.04.013 TP309.7 信息保障技术重点实验室开放基金（KJ-13-104） 2015-04-01 2021-03-31 4 61