一种改进的非对称可搜索加密方案  

An Improved Asymmetric Searchable Encryption Scheme

作　　者：伍琦[1] 

机构地区：[1]江西财经大学信息管理学院,南昌330032

出　　处：《计算机工程》2016年第8期123-125,133,共4页Computer Engineering

基　　金：国家自然科学基金资助项目(61462033)

摘　　要：云服务器端在缓解用户本地存储压力的同时,也存在对数据进行窃听的隐患,用户往往选择把数据的密文形式上传到云服务器端。然而,经典的数据加解密算法均未提供搜索功能,影响用户的使用效率。为此,提出一种非对称可搜索加密方案。该方案针对任何人均可生成陷门、密文可随意篡改、密钥对由用户各自生成、对身份进行加密、S形同虚设等5个漏洞作改进。分析结果表明,该方案在延用原方案类似框架的基础上,解决了原方案中的上述5个漏洞,使通信双方的信息语义得到保障。While relieving the stress of local storage for users, cloud servers can eavesdrop on the stored data. Thus, users usually choose to upload data in the encrypted form to cloud servers. However,no classic encryption and decryption algorithm provides the ability of searching, which dramatically affects the use efficiency for users. Therefore, an asymmetric searchable encryption scheme is designed. It aims at fixing five flaws,including ＂trapdoor can be generated by anyone＂ ,＂ ciphertext can be tampered with at will＂ is of no use＂. Analysis results show that the proposed ＂key pairs are generated by users＂,＂ encrypt identities＂, and ＂S scheme perfectly resolves the aforementioned five flaws in the previous scheme while maintaining its framework. The semantic information between communication sides is guaranteed

关 键 词：云服务器 可搜索加密 非对称可搜索加密 密钥对 陷门 

分 类 号：TN918.4[电子电信—通信与信息系统]