Java安全工具,生成MD5,Base64,UUID

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 /*
 * EncryptUtils.java
 * Copyright (C) 2007-3-19 <[email protected]>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 */
 package org.lambdasoft.utils;
 import java.io.ByteArrayInputStream;
 import java.io.ByteArrayOutputStream;
 import java.io.IOException;
 import java.io.ObjectInputStream;
 import java.io.ObjectOutputStream;
 import java.io.Serializable;
 import java.util.Date;
 import java.util.UUID;
 import sun.misc.BASE64Decoder;
 import sun.misc.BASE64Encoder;
 /**
 * @author TangLei <[email protected]>
 * @date 2008-11-28
 */
 public class EncryptUtils {
 static final int S11 = 7;
 static final int S12 = 12;
 static final int S13 = 17;
 static final int S14 = 22;
 static final int S21 = 5;
 static final int S22 = 9;
 static final int S23 = 14;
 static final int S24 = 20;
 static final int S31 = 4;
 static final int S32 = 11;
 static final int S33 = 16;
 static final int S34 = 23;
 static final int S41 = 6;
 static final int S42 = 10;
 static final int S43 = 15;
 static final int S44 = 21;
 static final byte[] PADDING = { -128, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
 0, 0, 0, 0, 0, 0, 0 };
 private long[] state = new long[4]; // state (ABCD)
 private long[] count = new long[2]; // number of bits, modulo 2^64 (lsb first)
 private byte[] buffer = new byte[64]; // input buffer
 public static String digestHexStr;
 private static byte[] digest = new byte[16];
 public static String getMD5ofStr(String inbuf) {
 EncryptUtils md5 = new EncryptUtils();
 md5.md5Init();
 md5.md5Update(inbuf.getBytes(), inbuf.length());
 md5.md5Final();
 digestHexStr = "";
 for (int i = 0; i < 16; i++) {
 digestHexStr += byteHEX(digest[i]);
 }
 return digestHexStr;
 }
 public EncryptUtils() {
 md5Init();
 }
 private void md5Init() {
 count[0] = 0L;
 count[1] = 0L;
 // /* Load magic initialization constants.
 state[0] = 0x67452301L;
 state[1] = 0xefcdab89L;
 state[2] = 0x98badcfeL;
 state[3] = 0x10325476L;
 return;
 }
 private long F(long x, long y, long z) {
 return (x & y) | ((~x) & z);
 }
 private long G(long x, long y, long z) {
 return (x & z) | (y & (~z));
 }
 private long H(long x, long y, long z) {
 return x ^ y ^ z;
 }
 private long I(long x, long y, long z) {
 return y ^ (x | (~z));
 }
 private long FF(long a, long b, long c, long d, long x, long s, long ac) {
 a += F(b, c, d) + x + ac;
 a = ((int) a << s) | ((int) a >>> (32 - s));
 a += b;
 return a;
 }
 private long GG(long a, long b, long c, long d, long x, long s, long ac) {
 a += G(b, c, d) + x + ac;
 a = ((int) a << s) | ((int) a >>> (32 - s));
 a += b;
 return a;
 }
 private long HH(long a, long b, long c, long d, long x, long s, long ac) {
 a += H(b, c, d) + x + ac;
 a = ((int) a << s) | ((int) a >>> (32 - s));
 a += b;
 return a;
 }
 private long II(long a, long b, long c, long d, long x, long s, long ac) {
 a += I(b, c, d) + x + ac;
 a = ((int) a << s) | ((int) a >>> (32 - s));
 a += b;
 return a;
 }
 private void md5Update(byte[] inbuf, int inputLen) {
 int i, index, partLen;
 byte[] block = new byte[64];
 index = (int) (count[0] >>> 3) & 0x3F;
 // /* Update number of bits */
 if ((count[0] += (inputLen << 3)) < (inputLen << 3))
 count[1]++;
 count[1] += (inputLen >>> 29);
 partLen = 64 - index;
 // Transform as many times as possible.
 if (inputLen >= partLen) {
 md5Memcpy(buffer, inbuf, index, 0, partLen);
 md5Transform(buffer);
 for (i = partLen; i + 63 < inputLen; i += 64) {
 md5Memcpy(block, inbuf, 0, i, 64);
 md5Transform(block);
 }
 index = 0;
 } else
 i = 0;
 // /* Buffer remaining input */
 md5Memcpy(buffer, inbuf, index, i, inputLen - i);
 }
 private void md5Final() {
 byte[] bits = new byte[8];
 int index, padLen;
 // /* Save number of bits */
 Encode(bits, count, 8);
 // /* Pad out to 56 mod 64.
 index = (int) (count[0] >>> 3) & 0x3f;
 padLen = (index < 56) ? (56 - index) : (120 - index);
 md5Update(PADDING, padLen);
 // /* Append length (before padding) */
 md5Update(bits, 8);
 // /* Store state in digest */
 Encode(digest, state, 16);
 }
 private void md5Memcpy(byte[] output, byte[] input, int outpos, int inpos,
 int len) {
 int i;
 for (i = 0; i < len; i++)
 output[outpos + i] = input[inpos + i];
 }
 private void md5Transform(byte block[]) {
 long a = state[0], b = state[1], c = state[2], d = state[3];
 long[] x = new long[16];
 Decode(x, block, 64);
 /* Round 1 */
 a = FF(a, b, c, d, x[0], S11, 0xd76aa478L); /* 1 */
 d = FF(d, a, b, c, x[1], S12, 0xe8c7b756L); /* 2 */
 c = FF(c, d, a, b, x[2], S13, 0x242070dbL); /* 3 */
 b = FF(b, c, d, a, x[3], S14, 0xc1bdceeeL); /* 4 */
 a = FF(a, b, c, d, x[4], S11, 0xf57c0fafL); /* 5 */
 d = FF(d, a, b, c, x[5], S12, 0x4787c62aL); /* 6 */
 c = FF(c, d, a, b, x[6], S13, 0xa8304613L); /* 7 */
 b = FF(b, c, d, a, x[7], S14, 0xfd469501L); /* 8 */
 a = FF(a, b, c, d, x[8], S11, 0x698098d8L); /* 9 */
 d = FF(d, a, b, c, x[9], S12, 0x8b44f7afL); /* 10 */
 c = FF(c, d, a, b, x[10], S13, 0xffff5bb1L); /* 11 */
 b = FF(b, c, d, a, x[11], S14, 0x895cd7beL); /* 12 */
 a = FF(a, b, c, d, x[12], S11, 0x6b901122L); /* 13 */
 d = FF(d, a, b, c, x[13], S12, 0xfd987193L); /* 14 */
 c = FF(c, d, a, b, x[14], S13, 0xa679438eL); /* 15 */
 b = FF(b, c, d, a, x[15], S14, 0x49b40821L); /* 16 */
 /* Round 2 */
 a = GG(a, b, c, d, x[1], S21, 0xf61e2562L); /* 17 */
 d = GG(d, a, b, c, x[6], S22, 0xc040b340L); /* 18 */
 c = GG(c, d, a, b, x[11], S23, 0x265e5a51L); /* 19 */
 b = GG(b, c, d, a, x[0], S24, 0xe9b6c7aaL); /* 20 */
 a = GG(a, b, c, d, x[5], S21, 0xd62f105dL); /* 21 */
 d = GG(d, a, b, c, x[10], S22, 0x2441453L); /* 22 */
 c = GG(c, d, a, b, x[15], S23, 0xd8a1e681L); /* 23 */
 b = GG(b, c, d, a, x[4], S24, 0xe7d3fbc8L); /* 24 */
 a = GG(a, b, c, d, x[9], S21, 0x21e1cde6L); /* 25 */
 d = GG(d, a, b, c, x[14], S22, 0xc33707d6L); /* 26 */
 c = GG(c, d, a, b, x[3], S23, 0xf4d50d87L); /* 27 */
 b = GG(b, c, d, a, x[8], S24, 0x455a14edL); /* 28 */
 a = GG(a, b, c, d, x[13], S21, 0xa9e3e905L); /* 29 */
 d = GG(d, a, b, c, x[2], S22, 0xfcefa3f8L); /* 30 */
 c = GG(c, d, a, b, x[7], S23, 0x676f02d9L); /* 31 */
 b = GG(b, c, d, a, x[12], S24, 0x8d2a4c8aL); /* 32 */
 /* Round 3 */
 a = HH(a, b, c, d, x[5], S31, 0xfffa3942L); /* 33 */
 d = HH(d, a, b, c, x[8], S32, 0x8771f681L); /* 34 */
 c = HH(c, d, a, b, x[11], S33, 0x6d9d6122L); /* 35 */
 b = HH(b, c, d, a, x[14], S34, 0xfde5380cL); /* 36 */
 a = HH(a, b, c, d, x[1], S31, 0xa4beea44L); /* 37 */
 d = HH(d, a, b, c, x[4], S32, 0x4bdecfa9L); /* 38 */
 c = HH(c, d, a, b, x[7], S33, 0xf6bb4b60L); /* 39 */
 b = HH(b, c, d, a, x[10], S34, 0xbebfbc70L); /* 40 */
 a = HH(a, b, c, d, x[13], S31, 0x289b7ec6L); /* 41 */
 d = HH(d, a, b, c, x[0], S32, 0xeaa127faL); /* 42 */
 c = HH(c, d, a, b, x[3], S33, 0xd4ef3085L); /* 43 */
 b = HH(b, c, d, a, x[6], S34, 0x4881d05L); /* 44 */
 a = HH(a, b, c, d, x[9], S31, 0xd9d4d039L); /* 45 */
 d = HH(d, a, b, c, x[12], S32, 0xe6db99e5L); /* 46 */
 c = HH(c, d, a, b, x[15], S33, 0x1fa27cf8L); /* 47 */
 b = HH(b, c, d, a, x[2], S34, 0xc4ac5665L); /* 48 */
 /* Round 4 */
 a = II(a, b, c, d, x[0], S41, 0xf4292244L); /* 49 */
 d = II(d, a, b, c, x[7], S42, 0x432aff97L); /* 50 */
 c = II(c, d, a, b, x[14], S43, 0xab9423a7L); /* 51 */
 b = II(b, c, d, a, x[5], S44, 0xfc93a039L); /* 52 */
 a = II(a, b, c, d, x[12], S41, 0x655b59c3L); /* 53 */
 d = II(d, a, b, c, x[3], S42, 0x8f0ccc92L); /* 54 */
 c = II(c, d, a, b, x[10], S43, 0xffeff47dL); /* 55 */
 b = II(b, c, d, a, x[1], S44, 0x85845dd1L); /* 56 */
 a = II(a, b, c, d, x[8], S41, 0x6fa87e4fL); /* 57 */
 d = II(d, a, b, c, x[15], S42, 0xfe2ce6e0L); /* 58 */
 c = II(c, d, a, b, x[6], S43, 0xa3014314L); /* 59 */
 b = II(b, c, d, a, x[13], S44, 0x4e0811a1L); /* 60 */
 a = II(a, b, c, d, x[4], S41, 0xf7537e82L); /* 61 */
 d = II(d, a, b, c, x[11], S42, 0xbd3af235L); /* 62 */
 c = II(c, d, a, b, x[2], S43, 0x2ad7d2bbL); /* 63 */
 b = II(b, c, d, a, x[9], S44, 0xeb86d391L); /* 64 */
 state[0] += a;
 state[1] += b;
 state[2] += c;
 state[3] += d;
 }
 private void Encode(byte[] output, long[] input, int len) {
 int i, j;
 for (i = 0, j = 0; j < len; i++, j += 4) {
 output[j] = (byte) (input[i] & 0xffL);
 output[j + 1] = (byte) ((input[i] >>> 8) & 0xffL);
 output[j + 2] = (byte) ((input[i] >>> 16) & 0xffL);
 output[j + 3] = (byte) ((input[i] >>> 24) & 0xffL);
 }
 }
 private void Decode(long[] output, byte[] input, int len) {
 int i, j;
 for (i = 0, j = 0; j < len; i++, j += 4)
 output[i] = b2iu(input[j]) | (b2iu(input[j + 1]) << 8)
 | (b2iu(input[j + 2]) << 16) | (b2iu(input[j + 3]) << 24);
 return;
 }
 public static long b2iu(byte b) {
 return b < 0 ? b & 0x7F + 128 : b;
 }
 public static String byteHEX(byte ib) {
 char[] Digit = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A',
 'B', 'C', 'D', 'E', 'F' };
 char[] ob = new char[2];
 ob[0] = Digit[(ib >>> 4) & 0X0F];
 ob[1] = Digit[ib & 0X0F];
 String s = new String(ob);
 return s;
 }
 public static String getBase64String(byte[] bytes) {
 return new BASE64Encoder().encode(bytes);
 }
 public static byte[] getBase64DecondigString(String base64String) {
 try {
 return new BASE64Decoder().decodeBuffer(base64String);
 } catch (IOException e) {
 return null;
 }
 }

 public static Object getBase64Object(String objectValue) {
 try {
 byte[] objBytes = new BASE64Decoder().decodeBuffer(objectValue);
 ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(
 objBytes);
 ObjectInputStream inputStream = new ObjectInputStream(
 byteArrayInputStream);
 return inputStream.readObject();
 } catch (Exception e) {
 return null;
 }
 }
 public static String getBase64ObjectString(Serializable serObject) {
 try {
 ByteArrayOutputStream arrayOutputStream = new ByteArrayOutputStream();
 ObjectOutputStream outputStream = new ObjectOutputStream(
 arrayOutputStream);
 outputStream.writeObject(serObject);
 return new BASE64Encoder().encode(arrayOutputStream.toByteArray());
 } catch (Exception e) {
 e.printStackTrace();
 }
 return null;
 }
 public static String getUUIDFromDateTime(Date date) {
 if(date == null)
 date = new Date();
 String uuid = UUID.nameUUIDFromBytes(Long.valueOf(date.getTime()).toString().getBytes()).toString();
 return uuid.replaceAll("-", "");
 }
 public static String getRandomUUID() {
 String uuid = UUID.randomUUID().toString();
 return uuid.replaceAll("-", "");
 }
 }