这是哈工大计算机专业密码学课程的实验四的源代码，主要实现的功能是制作一个密码系统实现加密解密，认证等功能，除此以外还设置成为p2p模式的网络文件共享系统！-This is the Harbin Institute of Technology computer science courses Experiment 4 cryptography source code, the main function is to create a password system to achieve encry

客户机通过该协议可以 　　访问服务器上的共享文件系统、打印机及其他资源-The client can be accessed through the agreement shared file system on the server, printers and other resources

实现的一个DES文件加密传输系统,能够在共享密钥的基础上实现DES加解密和传输功能。-Achieve a DES encrypted file transfer system, to achieve DES encryption and decryption and transmission functions on the basis of shared key.