Multi-bit LWE-based Encryption Scheme without Decryption Errors
The emergence of practical quantum computers will have a threat to classic computer,it makes the resistant quantum cryptography so important and urgent,where lattice cryptography attracted widespread attention for its feature of resistant quantum and easy to implement.The lattice problem LWE enjoys its provable security,related to worst-case and other characteristic,these make LWE become a hot topic in lattice cryptography,lattice based cryptography has commonly decryption errors occurred currently,such as GGH NTRU,encryption scheme based on LWE.LWE problem was introduced by Regev since 2005,and he proposed a single-bit encryption scheme based on LWE,subsequently multi-bit based on LWE was constructed by Peikert and etc.The decryption errors still exist.This paper is based on this,we proposed a multi-bit encryption scheme without decryption errors occurred based on LWE and SIS problem.At last this paper gave the property of the scheme under the homomorphic operations,and the application in the IBE scheme without identity information leakage.This scheme has the advantages of resistant quantum,provable security,multi-bit,no decryption errors,strong extensibility and easy to implement.
LWE encryption scheme resistant quantumr multi-bit decryption error
国内会议
湖北恩施
英文
1-12
2014-09-13（万方平台首次上网日期，不代表论文的发表时间）