BASE64+DES+3DES算法调用Base64单元中的两个函数来实现Base64加密解密算法重新定义函数并调用DES单元中的两个函数来实现3DES加密解密算法 Key为16位.-BASE64+DES+3DES algorithm calls two functions Base64 unit to implement the the Base64 encryption and decryption algorithms redefine the function and call the the DES unit in the two functions to implement 3DES encryption and decryption algorithms Key 16.