Abstract：A Niederreiter public-key cryptosystem based on QC-LDPC codes was proposed. As the check matrix of QC-LDPC codes is spare，who has the structure of circulative blocks and high error correction capability, compared with other public-key cryptosystem，the key sizes of the new cryptosystem is reduced and transmission rate is improved. A new parity-check matrix was mapped by invertible transformation matrix Q with diagonal form. The sparse characteristic of is countervailed. Through analyzing existing attacking methods，the security of the cryptosystem is confirmed to be improved.
杨磊鑫 杜伟章. 基于QC-LDPC码的Niederreiter公钥密码体制[J]. 计算机应用, 2011, 31(07): 1906-1908.
Lei-Xin YANG Wei-zhang DU. Niederreiter public-key cryptosystem based on QC-LDPC. Journal of Computer Applications, 2011, 31(07): 1906-1908.
2011, Vol. 31 
