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Vol. 21No. 2 Journal of Beijing Electronic Science and Technology Institute
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6.RLWENTRU J. . 2012. 5. 15. 7.NTRU
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A New Publickey Cryptosystem Based on RLWE
Bai Jian12 Liu Hui12 Zhang Ruoqing12 Yang Yatao2
1. Beijing Electronic Science and Technology InstituteBeijing 100070China
2. School of Telecommunication EngineeringXidian UniversityXian710071China Abstract: Publickey cryptosystems based on lattice is postquantum cryptography and the efficiency is highwhich now becomes a hot topic. Publickey cryptosystem is designed based on the learning with errors over ring in lattice. We give the choice of parameters and how to generate the keysencrypt
theplaintextanddecryptthecipertextindetails. Andalsothesecurityofthispublickeycryptosys tem and the analysis of efficiency are discussed. In the endwe compare the publickey cryptosystem with NTRU.
Keywords: Cryptography; Postquantum Cryptosystem; Publickey Cryptosystem Based on Lattice; RLWELearning with Errors over Rings ; Publickey Cryptosystem Based on RLWE
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