说明：  该程序实现了DES数据加解密算法，含加解密和密钥由口令导出。明文分组大小为64bit, //密文分组大小为64bit,明文二进制信息存放于《明文二进制表示.dat》 //密钥二进制存放于《密钥二进制表示.dat》，密文存放于《密文二进制.dat》中
(The program achieved a DES data encryption and decryption algorithms, including encryption and decryption and key derived from the password. Explicit packet size of 64bit,// packet size ciphertext 64bit, specifically the binary information stored in " binary explicitly expressed. Dat" // key stored in binary, " said binary keys. Dat" , stored in ciphertext " binary ciphertext. dat " in the)