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The Study Of Fully Homomorphic Encryption Based On Cloud Computing

Posted on:2019-09-11Degree:MasterType:Thesis
Country:ChinaCandidate:L Y LiangFull Text:PDF
GTID:2428330563952964Subject:Master of Statistics
Abstract/Summary:PDF Full Text Request
With the rapid development of electronic computer network technology in recent years,the development of cloud computing is getting faster and faster.The data information security problem in cloud computing has highlighted the trend of hindering its development.To fully homomorphic encryption on the characteristics of cloud computing users to study the influence of data security,in the absence of cloud computing data decryption,can directly to cloud computing data information processing,and processing the resulting and direct users to decrypt it is the clear results of the same.This paper is based on the whole homomorphic encryption scheme on integer and LWE,and studies the security of cloud computing.In this paper,based on the fully DGHV in homomorphic encryption scheme,to build a more efficient on large integer and contracted facilities fully homomorphic encryption methods,the main research fully homomorphic encryption security in cloud computing,the main work arrangement is as follows:(1)Firstly,a whole homomorphic encryption scheme for large integer mathematical puzzles is established.In this paper,we introduce the scheme research and optimization analysis based on DGHV scheme.(2)In addition,an all-homomorphic encryption scheme for LWE problem is analyzed.In this paper,two full homomorphic encryption schemes for LWE problems are established,and the first one is an automatic mode exchange full homomorphic encryption scheme on LWE.The second is a classic LWE issues do not use the mode switching mode has not fully homomorphic encryption scheme,through the analysis of the contrast of the two schemes,on the LWE or ring-LWE can use technology to reduce noise,reduce the public key size to improve operation efficiency and security of the scheme.This paper introduces the whole homomorphic encryption technology application of information security on the cloud data,based on the fully homomorphic encryption scheme proposed by the characteristics,performance,from the key dimension,the comparative analysis of the noise.Based on the DGHV scheme,the simulation experiment is carried out on cloud computing,and the correctness and security are verified.
Keywords/Search Tags:cloud computing, fully homomorphic encryption, LWE problem, DGHV scheme
PDF Full Text Request
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