通信学报 ›› 2016, Vol. 37 ›› Issue (5): 44-50.doi: 10.11959/j.issn.1000-436x.2016091

• 学术论文 • 上一篇    下一篇

支持直接撤销的密文策略属性基加密方案

闫玺玺,孟慧   

  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:2016-05-25 发布日期:2016-06-01
  • 基金资助:
    :国家自然科学基金资助项目(;河南省科技攻关基金资助项目;河南省科技攻关基金资助项目;河南省教育厅科研项目;河南省教育厅科研项目;河南理工大学博士基金资助项目

Ciphertext policy attribute-based encryption scheme supporting direct revocation

Xi-xi YAN,Hui MENG   

  1. School of Computer Science and Technology,Henan Poly nic University,Jiaozuo 454003,China
  • Online:2016-05-25 Published:2016-06-01
  • Supported by:
    The National Natural Science Foundation of China;Project of Science and Technology Depart-ment of Henan Province;Project of Science and Technology Depart-ment of Henan Province;Foundation of Henan Educational Committee;Foundation of Henan Educational Committee;Doctoral Program of Henan Polytechnic University

摘要:

提出一种支持直接撤销的属性基加密方案,首先给出支持直接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,与其他方案对比显示,该方案在密文和密钥长度方面都有所减少。该方案可以实现对用户进行即时撤销,当且仅当用户所拥有的属性满足密文的访问结构且不在用户撤销列表内时,才能使用自己的私钥解密出明文。

关键词: 属性基加密, 属性撤销, 直接撤销, 访问控制

Abstract:

In order to support fine-grained attribute revocation in direct revocation mode an attribute-based encryption scheme with efficient revocation was proposed.The model of ABE supporting attribute revocation was given,and a con-crete scheme was constructed which was proven its security under the standard model.Compared to the existing related schemes,the size of ciphertext and private/secret key was reduced.In additional,the new scheme achieved fine-grained and immediate attribute revocation which is more suitable for the practical applications.

Key words: attribute-based encryption, attribute revocation, direct revocation, access control

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