面向移动终端的密文可验证属性基可搜索加密方案  

A ciphertext verifiable attribute-based searchable encryption scheme for mobile terminals

作　　者：牛淑芬 张美玲 周思玮 闫森 NIU Shu-fen;ZHANG Mei-ling;ZHOU Si-wei;YAN Sen(College of Computer Science and Engineering,Northwest Normal University,Lanzhou 730070,China)

机构地区：[1]西北师范大学计算机科学与工程学院,甘肃兰州730070

出　　处：《计算机工程与科学》2022年第11期1941-1950,共10页Computer Engineering & Science

基　　金：国家自然科学基金(61772022)。

摘　　要：轻量级设备的数据大多都存储在云服务器上。由于云服务不完全可信,且传统的单关键词可搜索加密会产生许多与检索内容无关的信息,因此提出一个面向移动终端的密文可验证属性基可搜索加密方案。该方案结合CP-ABE技术控制访问细粒度,引入可信第三方进行数据完整性验证,同时帮助用户进行部分解密工作。该方案在困难问题假设下被证明是选择性不可区分的密文策略和选择明文攻击IND-sCP-CPA及不可区分的选择关键词攻击IND-CKA。理论分析和数值模拟实验表明,该方案具有更高的效率。The data of lightweight devices are mostly stored in the cloud server.Because the cloud service is not completely trusted,and the traditional single keyword searchable encryption will produce a lot of information irrelevant to the retrieved content,this paper proposes a ciphertext verifiable attribute based searchable encryption scheme for mobile terminals.The scheme combines CP-ABE technology to control access granularity,introduces a trusted third party entity to verify data integrity,and help users to partially decrypt data.The scheme is proved to be selectively indistinguishable ciphertext strategy and selective plaintext attack and indistinguishable selective keyword attack under the assumption of difficult problems.Theoretical analysis and numerical simulation show that this scheme has higher efficiency.

关 键 词：可搜索加密 属性基加密 密文可验证 细粒度访问控制 

分 类 号：TP309.7[自动化与计算机技术—计算机系统结构]