《计算机应用研究》|Application Research of Computers

完全隐藏策略的基于属性可搜索加密方案

Attribute-based encryption scheme with fully hidden access structure

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作者 许盛伟,王荣荣,赵海
机构 1.北京电子科技学院,北京 100070;2.西安电子科技大学 通信工程学院,西安 710071
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文章编号 1001-3695(2019)06-046-1824-04
DOI 10.19734/j.issn.1001-3695.2017.12.0857
摘要 目前基于属性可搜索加密方案(ATT-PEKS)虽然解决了关键词密文只能被唯一用户搜索的限制,实现了加密数据的多用户共享,但是却没有隐藏访问策略,访问策略一旦被好奇且不可信赖的服务器攻击者获取到,就可能会造成机密信息的泄露。为了解决此问题,提出了完全隐藏策略的基于属性可搜索加密方案,并给出了具体的算法构造,使得方案不仅具有多用户数据共享的优势,还实现了访问策略的完全隐藏。对此方案进行了安全性以及性能分析,证明了方案具有在属性集合模型下的抗攻击性安全,还能保证索引和关键词明文的机密性。在性能方面使用较少的运算量就可以实现隐藏访问策略和加密数据共享两大功能。
关键词 基于属性; 可搜索加密; 隐藏访问策略; 数据共享
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本文URL http://www.arocmag.com/article/01-2019-06-046.html
英文标题 Attribute-based encryption scheme with fully hidden access structure
作者英文名 Xu Shengwei, Wang Rongrong, Zhao Hai
机构英文名 1.Beijing Electronic Science & Technology Institute,Beijing 100070,China;2.School of Telecommunications Engineering,Xidian University,Xi'an 710071,China
英文摘要 The current attribute-based public encryption with keyword search(ATT-PEKS) solves the problem that the keyword ciphertext can only be uniquely searched by the user to enable multi-user share of encrypted data, but it does not hide the access structure. Once the access structure is obtained by unreliable servers attackers, it may be exposed to confidential information. Therefore, in order to solve this problem, this paper proposed an attribute-based public encryption scheme with keyword search that completely hided the access structure, which not only preserved the advantages of ATT-PEKS to realize multi-user data sharing, but also realized the complete concealment of the access structure that prevented the policy information leaking. At last, this paper analyzed the security and performance of the scheme. The simulation result proves that the scheme has the anti-attack security under the attribute set model, and also ensures the confidentiality of the index and the key words. The use of less computing power in terms of performance can achieve hidden access policies and encrypt data sharing two functions.
英文关键词 attribute-based; searchable encryption; hidden access structure; data-sharing
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收稿日期 2017/12/19
修回日期 2018/2/22
页码 1824-1827
中图分类号 TP309.7
文献标志码 A