计算机与现代化

• 算法设计与分析 • 上一篇    下一篇

支持多关键字搜索的条件代理重加密

  

  1. (河海大学计算机与信息学院,江苏南京211100)
  • 收稿日期:2019-05-30 出版日期:2020-02-13 发布日期:2020-02-13
  • 作者简介:秦璐璐(1993-),女,江苏赣榆人,硕士研究生,研究方向:可搜索加密,E-mail: 542193946@qq.com; 周李京(1993-),男,硕士研究生,研究方向:可搜索加密,E-mail: 1095631457@qq.com; 王敏(1991-),男,硕士研究生,研究方向:属性基加密,E-mail: 2700484062@qq.com。
  • 基金资助:
    国家自然科学基金资助项目(61772009)

A Conditional Proxy Re-encryption Supporting Multi-keyword Search

  1. (College of Computer and Information, Hohai University, Nanjing 211100, China)
  • Received:2019-05-30 Online:2020-02-13 Published:2020-02-13

摘要: 为了实现细粒度的访问控制和多个关键字数据搜索,本文引入满足条件树和强一次性签名,提出一个可用于多个关键字搜索的条件代理重加密方案。与已有的方案相比,本文方案在计算效率上有明显的提升。该方案可抵抗选择密文攻击,在随机预言机模型下,满足选择密文攻击安全性。本文提出的方案对解决金融等行业中的敏感数据安全问题有重要的作用。

关键词: 关键字搜索, 代理重加密; 满足条件树; 数据安全

Abstract: In order to realize fine granularity access control and multiple keyword data search, this paper introduces access tree and strong one-time signature, and proposes a conditional proxy re-encryption scheme which can be used for multiple keyword search. Compared with the existing schemes, this scheme has obvious improvement in computational efficiency. The scheme can resist the selective cipher-text attack and satisfy the security of the chosen cipher-text attack under the random prophet model. The scheme proposed in this paper plays an important role in solving the security problem of sensitive data in industries such as finance.

Key words:  keyword search, proxy re-encryption, access tree, data security

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