适应性安全且支持属性撤销的CP-ABE方案  

Adaptively Security CP-ABE Scheme Supporting Attribute Revocation

作　　者：彭开锋 张席[1] 

机构地区：[1]深圳大学计算机与软件学院,广东深圳518060

出　　处：《计算机工程》2015年第4期151-155,共5页Computer Engineering

基　　金：广东省自然科学基金资助项目(S2011010001206)

摘　　要：现有支持属性间接撤销的CP-ABE方案存在撤销代价与安全性难以兼顾的问题,为此,借鉴属性间接撤销思想和双系统加密技术,提出一个适应性安全且支持属性撤销的CP-ABE方案,并基于3素数子群判定问题证明该方案的安全性。分析结果表明,与经典ABE属性撤销方案相比,该方案的效率较高,访问策略表达更为灵活。In the existing CP-ABE schemes that supporting attribute indirect revocation,the cost of revocation and its security can not be taken into account in the model simultaneously. Based on the idea of attribute indirect revocation and the dual system encryption technique,this paper constructs an adaptively security CP-ABE scheme that supports attribute revocation,and proves the security of the scheme using the 3P-SDP. Analysis result show s that,compared w ith the ABE schemes proposed before,the proposed scheme is more flexible and efficient in the access policy and attribute revocation.

关 键 词：属性撤销 间接撤销模式 属性基加密 适应性安全 密文策略 双系统加密 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]