Technology of Information Security
|
App. Res. of Comp. Printed Article
Vol. 36, 2019 No. 1
243-245

Improved R-LWE homomorphic masking scheme

Li Zichen1,2
Sun Yafei1
Yang Yatao1,3
Liang Lan1
Cao Guangcan3
1. College of Communication Engineering, Xidian University, Xi'an 710071, China
2. Beijng Institute of Graphic Communication, Beijing 102600, China
3. Beijing Electronic Science & Technology Institute, Beijing 100070, China
DOI: 10.19734/j.issn.1001-3695.2017.07.0703

Abstract

Aiming at the differential power attack of the encryption scheme based on lattice, Reparaz proposed an additively homomorphic R-LWE masking scheme in PQC 2016. This scheme could against the differential power attack effectively, but the additively homomorphic algorithm between the ciphertexts made the size of noise increase. It declined the rate of decryption correctness. In view of this problem, this paper proposed an improved R-LWE homomorphic masking scheme. By introducing the modular switching technology, it made a modular reduction with the cipher text of additively homomorphic. Under the premising that plaintext and the ciphertext were corresponding, it declined the size of noise in the ciphertext. And it could improve the decryption correctness of the scheme. In order to protect the sub keys, it introduced a random matrix to mask the sub key. And it made the correctness analysis and the safety proof. The proposed scheme has better security and efficiency compared to the original scheme.

Foundation Support

国家自然科学基金资助项目(61370188)
“十三五”国家密码发展基金资助项目(MMJJ20170110)

Publish Information

DOI: 10.19734/j.issn.1001-3695.2017.07.0703
Publish at: Application Research of Computers Printed Article, Vol. 36, 2019 No. 1
Section: Technology of Information Security
Pages: 243-245
Serial Number: 1001-3695(2019)01-056-0243-03

Publish History

[2019-01-05] Printed Article

Cite This Article

李子臣, 孙亚飞, 杨亚涛, 等. 一种改进的R-LWE同态掩码方案 [J]. 计算机应用研究, 2019, 36 (1): 243-245. (Li Zichen, Sun Yafei, Yang Yatao, et al. Improved R-LWE homomorphic masking scheme [J]. Application Research of Computers, 2019, 36 (1): 243-245. )

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Application Research of Computers, founded in 1984, is an academic journal of computing technology sponsored by Sichuan Institute of Computer Sciences under the Science and Technology Department of Sichuan Province.

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