二十多年来,纠错码成功地用于构造诸多纠错码公钥密码体制。文中首先研究了N公钥体制的性能指标,给出了它的计算机模拟曲线;通过分析N公钥体制的安全性,给出了一种攻击N公钥体制的新方法;然后探讨M公钥体制与N公钥体制的内在关系,揭示了它们之间安全性等价的事实,给出了M公钥与N公钥体制性能比较的结果。 For more than two decades, error-correcting codes have been successfully used to construct many error-correcting code public key cryptosystems. Firstly, the performance index of N public key system is studied, and its computer simulation curve is given. A new method to attack N public key system is given by analyzing the security of N public key system. Then, System and the N public key system, reveals the fact that they are equivalent in security, and gives the result of the comparison between M public key and N public key system performance.