代码混淆在密码协议中的应用

The Application of Obfuscation in Cryptographic Protocols

代码混淆是实现程序隐私性的强大工具,在云计算中有着重要的应用。代码混淆能够被用来构造安全高效的同态加密方案。代码混淆还可以用来对云服务器共享数据时的重加密函数进行隐藏,保证用户计算任务的隐私性。文章主要总结代码混淆在密码协议中的应用,从代码混淆的几种定义形式出发,分析其相关研究进展和结果,并指出代码混淆方向亟需解决的问题。

Code obfuscation is a powerful tool of protecting the privacy of programs, and has many applications in cloud computing. For example, code obfuscation can be used for constructing efficient secure homomorphic encryption. Code obfuscation can also hide the information of re-encryption function while sharing data from cloud server to achieve privacy of the computation task. In this paper, the results of the application of obfuscation in cryptographic protocols are summarized. From the aspect of several forms of definition of obfuscation, we analyze the related progress and results, and point out some unsolved problems on obfuscation.