云计算中面向隐私保护的查询处理技术研究

在云计算环境中既能同时保护数据隐私和用户查询隐私，又能提供给用户满足需求的查询结果是云计算中面向隐私保护的查询处理的关键问题。对云计算中面向隐私保护的查询处理技术的若干关键问题进行了全面的调研，包括数据库索引技术与查询优化、基于加密的隐私保护技术、基于安全多方计算的隐私保护技术以及查询结果完整性验证技术。分析了云计算中面向隐私保护的查询处理技术的挑战性问题，指明了未来研究方向。

A vital concern in cloud computing is how to protect both data privacy and query privacy while providing query services for users. This paper surveys several critical techniques of privacy-preserving query processing in cloud computing, which include cloud database indexing, query optimization, encryption-based privacy-preserving techniques, privacy-preserving techniques based on secure multi-party computation and authorization auditing techniques. Finally, the paper analyzes the challenges of privacy-preserving query processing in cloud computing and figures out the trend of this area.