外包数据库中数据加密的设计和实现

Design and implementation of encrypted data in outsourced database

加密技术是保护外包数据库中数据安全的一种有效方法,但如何对加密数据进行高效查询是一个热点,引起了研究界的重视。针对这个问题,提出了一种基于DBMS内核的加密模式,通过安全字典和SQL语句的扩展,实现数据的加密存储和高效查询。实验证明了该方法的有效性和可行性。

Encryption technology has become an important mechanism of securing data stored in the outsourced database.However,it is a difficulty to query efficiently the encrypted data and many researchers take it into consideration.To solve the problem,an encrypted schema,based on the inner DBMS,is proposed.Through the security dictionary and the extended SQL,the approach implements the encrypted storage and efficient query over the data in the outsourced databases.Results of experiments validate the efficiency and feasibility of the approach.