资 源 简 介
应用密码学：协议、算法与C源程序 DES 源码
Additional functions not in the MIT library are:
des_dea - Identical to des_ecb_encrypt.
des_key - Same as des_set_key without any parity
or weak-key test.
des_ecb2_encrypt - The Electronic Code Book mode of
encryption/decryption on
