面向云存储的数据加密系统与技术研究

To order to address the problem of cloud storage data security, the generic proxy-based data protection system was proposed, which could automatically and transparently secure sensitive data in browser-based cloud storage applications. A novel dynamic program analysis technique was adopted based on JavaScript API function hooking for automatically extending to various cloud applications. And a novel proxy executed searchable encryption solution was presented so that it could achieve data encryption while maintaining the original functions of cloud applications. Experimental results show that the system can support a variety of typical cloud services, effectively protect sensitive data, and bring a relatively low overhead.