使用RSA和DES两种算法为基础，设计实现了一个简单的网络传输模型。模型里有两个类，Server和Client，Server端要将自己的公钥发给Client，然后Client将自己的DES密钥通过RSA加密发给Server 端。之后双方可以通过DES对称加密进行通信。-Two algorithms using the RSA and the DES, based on designs and implements a simple model of network transmission. Model, there are two classes, Server and Client, Server-side to their own public key sent to Client, then Client will own DES key encrypted via RSA distributed Server-side. After the two sides can communicate through the DES symmetric encryption.