江汉大学学报(自然科学版) ›› 2013, Vol. 41 ›› Issue (1): 61-66.

• 计算机科学 • 上一篇    下一篇

多认证机构的属性加密方案

邹秀斌   

  1. 江汉大学 数学与计算机科学学院,湖北 武汉 430056
  • 出版日期:2013-02-12 发布日期:2013-12-27
  • 作者简介:邹秀斌(1974—),男,讲师,博士,研究方向:公钥密码体制及其安全分析。
  • 基金资助:
    国家自然科学基金资助项目(60903175);湖北省自然科学基金资助项目(2009CBD307)

Attribute Encryption Scheme of Multi-authority

ZOU Xiu-bin   

  1. School of Mathematics and Computer Science, Jianghan University,Wuhan 430056, Hubei, China
  • Online:2013-02-12 Published:2013-12-27

摘要: 通常情况下,用户所具有的属性集合由不同的认证机构负责分配和认证。针对这种情况,提出了一种多认证机构的属性加密方案。在该方案中,将属性全集分成若干个属性子集,而且各个属性子集之间相交结果是空集。对于每一个属性子集,由一认证机构负责监控用户的属性值并分配对应该属性值的密钥。任意发送者可用一属性集合加密信息,而具有该属性集合的用户可以解密已加密了的信息。所提方案满足IND-sSET-CPA安全。

关键词: 属性加密, 多认证机构的属性加密, 双线性映射

Abstract: A user's attributs are usually distributed and authenticated by the different authorities. Proposes a multi-authority attribute-based encryption scheme for this case. The universal attribute set is divided into a number of attribute subsets,moreover,the attribute subsets intersect is null set. For every attribute subset,an authority takes charge of monitoring the attribute value and as?signs a key corresponding to the attribute value. Every senter can encrypt the information with a certain attribute set,and the user obtaining the attribute set can decrypt the encrypted information. The proposed scheme meets the security of IND-sSET-CPA.

Key words: attribute-based encryption, multi-authority attribute-based encryption, bilinear Map

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