本资源是集合了SMS4和自定义的Base64加密算法。SMS4加密算法中提供了如下接口： private static byte[] encode16(byte[] plain, byte[] key); private static byte[] decode16(byte[] cipher, byte[] key); private static byte[] encode32(byte[] plain, byte[] key); private static byte[] decode32(byte[] cipher, byte[] key); public static byte[]