摘要：

可搜索加密技术节省用户的本地存储资源,简便用户对所要查询加密文件的搜索操作,但是多数可搜索加密方案都只是静态搜索。为此,提出一种基于双线性对的可以删除指定身份文件的动态可搜索加密方案。引进认证技术,在服务器删除文件之前对删除用户的合法性进行认证,以防止非法用户的恶意删除。分析结果表明,该方案在实现删除功能基础上,具有选择明文攻击下的不可区分安全性。

关键词: 可搜索加密, 认证, 选择明文攻击, 身份, 动态搜索, 双线性对

Abstract:

Searchable encryption technology saves user’s local storage resources and simplifies user’s search operation.However,most searchable encryption schemes are only static search.Therefore,this paper presents a dynamic searchable encryption scheme based on bilinear pairings which can delete specified Identity(ID) files.At the same time,the authentication technology is introduced.Before server deletes file,server authenticates user who issued the deletion request and effectively prevents malicious user from deleting maliciously.Analysis results show that the scheme achieves Indistinguishability Under Chosen Plaintext Attack(IND-CPA) security on the basis of the realization of deletion function.

Key words: searchable encryption, authentication, chosen plaintext attack, Identity(ID), dynamic search, bilinear pairings

中图分类号: 

• TN918.4