完成DES加密算法，C语言实现，已调试成功，输入字符串明文，按照DES算法输出相应的密文，还可以由密文通过DES算法计算出明文-Completion of the DES encryption algorithm, C language, has been successful commissioning, the input string plaintext, according to the DES algorithm outputs the corresponding ciphertext, the cipher text can also be passed by the DES algorithm to calculate the plaintext