通信学报 ›› 2015, Vol. 36 ›› Issue (10): 92-100.doi: 10.11959/j.issn.1000-436x.2015254

• 学术论文 • 上一篇    下一篇

数据外包环境下一种支持撤销的属性基加密方案

闫玺玺,汤永利   

  1. 河南理工大学 计算机科学与技术学院,河南 焦作 454003
  • 出版日期:2015-10-25 发布日期:2015-10-27
  • 基金资助:
    国家自然科学基金资助项目;河南省科技攻关计划基金资助项目;河南理工大学博士基金资助项目

Attribute-based encryption scheme with efficient revocation in data outsourcing systems

Xi-xi YAN,Yong-li TANG   

  1. School of Computer Science and Technology,Henan Polytechnic University,Jiaozuo 454003,China
  • Online:2015-10-25 Published:2015-10-27
  • Supported by:
    The National Natural Science Foundation of China;The Science and Technology Project of Henan Province;The Research Fund for the Doctoral Program of Henan Polytechnic University

摘要:

针对数据外包环境中属性的细粒度撤销,借助于数据外包管理服务器和密钥加密密钥,提出一种间接模式下支持即时撤销的属性基加密方案。首先给出外包环境中支持撤销的属性基加密定义和安全模型,其次给出具体的支持撤销的密文策略——属性基加密方案并对安全性进行证明,最后,与其他方案进行对比,该方案在密文和密钥长度方面都有所减少。另外,方案实现对用户部分属性进行细粒度撤销,支持属性的即时撤销,即使用户错过密钥即时更新的信息,也只需在解密密文前更新自己的密钥,更加贴近于实际环境。

关键词: 数据外包, 属性基加密, 属性撤销, 访问控制

Abstract:

In order to support fine-grained attribute revocation in data outsourcing systems,an attribute-based encryption scheme with efficient revocation in indirect revocation model was proposed.The model of ABE supporting attribute revocation was given,and a concrete scheme was constructed which proved its security under the standard model.Compared to the existing related schemes,the size of ciphertext and private/secret key is reduced,and the new scheme achieves fine-grained and immediate attribute revocation which is more suitable for the practical applications.

Key words: data outsourcing, attribute-based encryption, attribute revocation, access control

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