【摘要】 针对Rao-Nam私钥密码体制修正案进行分析及改进.首先,考虑密文通过有扰信道时对修正案进行改进,提出加密与纠错相结合的加密纠错体制.其次,利用错误图样携带附加信息的方法提高了修正案的传信率.分析表明,新方案与修正案相比,在安全性、纠错能力、传信率、有扰信道的正确解密概率、长密钥问题等方面有很大提高.更多还原

【Abstract】 The revised scheme of Rao-Nam’s private-key cryptosystem was analyzed and improved.When the ciphertext was transmitted through interference channels,the revised scheme was improved and a private-key cryptosystem with error correcting capability was proposed.In addition,the information rate of the revised scheme was improved using the added error vector to carry additional information.Comparing with the original revised scheme,the generalized scheme is better in the aspects of security,error correcting capability,information rate,probability of correct decipher,and long keys.更多还原