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计算机工程 ›› 2021, Vol. 47 ›› Issue (11): 29-36. doi: 10.19678/j.issn.1000-3428.0061050

• 热点与综述 • 上一篇    下一篇

云存储中支持属性撤销的多关键词可搜索加密方案

黄保华, 黄丕荣, 赵伟宏, 彭丽   

  1. 广西大学 计算机与电子信息学院, 南宁 530004
  • 收稿日期:2021-03-08 修回日期:2021-04-29 发布日期:2021-05-11
  • 作者简介:黄保华(1973-),男,副教授、博士,主研方向为信息安全;黄丕荣、赵伟宏、彭丽,硕士研究生。
  • 基金资助:
    国家自然科学基金(61962005);国家重点研发计划(2018YFB1404404)。

Multi-Keyword Searchable Encryption Scheme Supporting Attribute Revocation in Cloud Storage

HUANG Baohua, HUANG Pirong, ZHAO Weihong, PENG Li   

  1. School of Computer and Electronic Information, Guangxi University, Nanning 530004, China
  • Received:2021-03-08 Revised:2021-04-29 Published:2021-05-11

摘要: 云存储的便捷性和管理高效性使得越来越多的用户选择将数据存放在云端。为支持用户对云端加密数据进行检索,提出云存储中基于属性加密支持属性撤销的多关键词搜索方案。采用线性秘密共享矩阵来表示访问控制结构,实现密文细粒度访问控制,在属性撤销过程中不需要更新密钥,应对用户属性变更的情况,在此基础上构造基于多项式方程的搜索算法支持多关键词搜索,从而提高搜索精度。理论分析和实验结果表明,该方案具有陷门不可伪造性和关键词隐私性,能够保证用户数据的隐私和安全,相比CP-ABE方案,具有较高的存储性能和计算效率,功能性更强。

关键词: 可搜索加密, 属性撤销, 连接关键词, 属性加密, 云存储

Abstract: The convenience and efficiency of cloud storage make more and more users choose to store data in cloud.In order to support users to retrieve encrypted data in cloud,a multi keyword search scheme based on attribute encryption supporting attribute revocation is proposed for cloud storage.The scheme uses the linear secret sharing matrix to represent the access control structure,which can achieve fine-grained control for cipher text access.The scheme does not need to update the key in the process of attribute revocation,and can flexibly deal with the change of user attributes.On this basis,a search algorithm that supports multi-keyword search is constructed based on polynomial equation to improve the search accuracy.Theoretical analysis and experimental results show that the proposed scheme provides trapdoor unforgeability and keyword privacy,which can guarantee the privacy and security of user data.Compared with the existing schemes,the proposed scheme has stronger functionality,higher storage performance and computational efficiency.

Key words: searchable encryption, attribute revocation, connection keywords, attribute encryption, cloud storage

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