On the analysis of algorithm RSA in this paper a protocol of the digital signature which assures that the receiver can not deny the received message .

• 本文在简单分析了采用 RSA算法的数字签名的基础上 ；针对该方法的弱点 ；提出了一种收方也不可否认的数字签名协议 ；该协议引入第三方 ；RSA算法和传统密码体制并用 .