中国科学院重庆绿色智能技术研究院机构知识库

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	Homomorphically encrypted arithmetic operations over the integer ring
	Xu, Chen; Chen, Jingwei; Wu, Wenyuan; Feng, Yong
	2016
摘要	Fully homomorphic encryption allows cloud servers to evaluate any computable functions for clients without revealing any information. It attracts much attention from both of the scientific community and the industry since Gentry’s seminal scheme. Currently, the Brakerski-Gentry-Vaikuntanathan scheme with its optimizations is one of the most potentially practical schemes and has been implemented in a homomorphic encryption C++ library HElib. HElib supplies friendly interfaces for arithmetic operations of polynomials over finite fields. Based on HElib, Chen and Guang (2015) implemented arithmetic over encrypted integers. In this paper, we revisit the HElib-based implementation of homomorphically arithmetic operations on encrypted integers. Due to several optimizations and more suitable arithmetic circuits for homomorphic encryption evaluation, our implementation is able to homomorphically evaluate 64-bit addition/subtraction and 16-bit multiplication for encrypted integers without bootstrapping. Experiments show that our implementation outperforms Chen and Guang’s significantly. © Springer International Publishing AG 2016.
语种	英语
DOI	10.1007/978-3-319-49151-6_12
会议(录)名称	12th International Conference on Information Security Practice and Experience, ISPEC 2016
页码	167-181
通讯作者	Chen, Jingwei (chenjingwei@cigit.ac.cn)
收录类别	EI
会议地点	Zhangjiajie, China
会议日期	November 16, 2016 - November 18, 2016