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计算机工程

• 安全技术 • 上一篇    下一篇

适应性安全且支持属性撤销的CP-ABE 方案

彭开锋,张 席   

  1. (深圳大学计算机与软件学院,广东深圳518060)
  • 收稿日期:2014-05-12 出版日期:2015-04-15 发布日期:2015-04-15
  • 作者简介:彭开锋(1988 - ),男,硕士研究生,主研方向:信息安全,密码学;张 席,副教授。
  • 基金资助:
    广东省自然科学基金资助项目(S2011010001206)。

Adaptively Security CP-ABE Scheme Supporting Attribute Revocation

PENG Kaifeng,ZHANG Xi   

  1. (College of Computer Science and Software Engineering,Shenzhen University,Shenzhen 518060,China)
  • Received:2014-05-12 Online:2015-04-15 Published:2015-04-15

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。

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

Abstract: 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 shows that,compared with the ABE schemes proposed before,the proposed scheme is more flexible and efficient in the access policy and attribute revocation.

Key words: attribute revocation, indirect revocation mode, Attribute-based Encryption(ABE), adaptive security, cipher policy, dual system encryption

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