同态密码理论与应用进展

Recent Development of Theory and Application on Homomorphic Encryption

随着云计算、云存储等各类云服务的普及应用,云环境下的隐私保护问题逐渐成为业界关注的焦点,同态密码成为解决该问题的关键手段,其中,如何构造高效的全同态加密方案是近年来同态加密研究的热点之一。首先,该文介绍了同态密码的发展情况,从不同角度对同态加密方案进行了分类分析,着重描述了可验证全同态加密方案的研究进展。通过分析近年来公开的同态加密领域知识产权文献,对同态加密在理论研究和实际应用中所取得的进展进行了归纳总结。其次,对比分析了目前主流全同态加密库Helib,SEAL以及TFHE的性能。最后,梳理了同态加密技术的典型应用场景,指出了未来可能的研究与发展方向。

With the popularization of various cloud services such as cloud computing and cloud storage,privacy preservation issues in the cloud environment have gradually become the focus of industrial applications.Homomorphic encryption has become an important method to solve this issue.Among them,how to construct an efficient fully homomorphic encryption scheme is one of the hotspots at present.Firstly,the development of homomorphic encryption is introduced.The homomorphic encryption schemes are analyzed and classified from different perspectives.The research progress of verifiable fully homomorphic encryption schemes is discussed in detail.By analyzing the property rights literature on homomorphic encryption that has been published in recent years,the progress in the theoretical research and application about homomorphic encryption are summarized.Secondly,the working performances of three typical homomorphic encryption libraries,Helib,SEAL and TFHE,are compared and analyzed.Finally,various application scenarios of homomorphic encryption technology are sorted out,and possible research and development directions in the future are proposed.