东南大学学报（自然科学版）2016，Vol.46Issue(5)：945-949,5.DOI:10.3969/j.issn.1001-0505.2016.05.008
基于LWE的单层同态云计算方案
Single-layer homographic cloud computing scheme based on LWE
摘要
Abstract
To achieve safe remote operation,a single-layer homographic cloud computing scheme (sLHCC)based on learning with errors(LWE)is constructed by analyzing one-time-layer or single-layer homomorphic operation.First,according to whether the decryption accesses the random vector in LWE problem or not,two different single-layer homographic encryption schemes,named sLHE1 and sLHE2,are proposed,and the corresponding sLHCC schemes are put forward.The sLHCC schemes can realize one-time homomorphic addition and one-time homomorphic multiplication in cloud with maintaining the difficulty of LWE problem.According to the reasonable operation agree-ment and homomorphism results,users can execute the remote operation and control without leaking operation requirements (ciphertexts).The results show that compared with other homomorphic en-cryption schemes,the size of the public key of the sLHCC schemes reduces from matrix to vector, inducing the decrease of the ciphertext size and the demands of the cloud storage.关键词
云计算/格密码/错误学习/同态/远程操作Key words
cloud computing/lattice-based cryptography/learning with errors(LWE)/homograph-ic/remote operation分类
信息技术与安全科学引用本文复制引用
王旭阳,胡爱群,方昊..基于LWE的单层同态云计算方案[J].东南大学学报（自然科学版）,2016,46(5):945-949,5.基金项目
国家重点基础研究发展计划（973计划）资助项目（2013CB338003）． （）
