公钥可搜索加密

Public-key Searchable Encryption

传统的公钥加密控制粒度是比较粗糙的,发送方使用公钥PK对一个消息M进行加密,并且只有拥有与PK对应的私钥的接收方才能够对密文进行解密得到原消息。这样的语义使得第三方不能对加密数据进行有效的检索,本文提出一种新的公钥可搜索加密方案,允许对加密后的数据进行检索,并证明了方案的安全性。

Available public key encryption schemes allows only binary semantic.Message M encrypted by public-key PK can only be decrypted by owner of private-key.This kind of semantic doesn t allow search operation of third-party.In this thesis a public-key searchable encryption scheme is proposed,which enables search operations on encrypted data.Moreover the proof of security is given.