说明：  本论文为计算机专业毕业设计论文,密码体制的描述与RSA算法及在数字签名中的应用与前景分析,包括具体应用的密聊源程序.
(thesis for the graduate design computer professional papers, Cryptography with the RSA algorithm described in the digital signature and the application and prospects, including specific application of the Federated chat source.)