javabean实现MD5加密
<div style="padding-right: 5.4pt; padding-left: 5.4pt; background: #e6e6e6; padding-bottom: 4px; width: 95%; padding-top: 4px;">http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ExpandedBlockStart.gifhttp://images.csdn.net/syntaxhighlighting/OutliningIndicators/ContractedBlock.gif/** *//************************************************http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gifMD5 算法的Java Bean
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif@author:Topcat Tuppin
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gifLast Modified:10,Mar,2001
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http://images.csdn.net/syntaxhighlighting/OutliningIndicators/None.gifpackage com.shop.bean;
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/None.gifimport java.lang.reflect.*;
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ExpandedBlockStart.gifhttp://images.csdn.net/syntaxhighlighting/OutliningIndicators/ContractedBlock.gif/** *//*************************************************
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gifmd5 类实现了RSA Data Security, Inc.在提交给IETF
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif的RFC1321中的MD5 message-digest 算法。
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http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ExpandedBlockStart.gifhttp://images.csdn.net/syntaxhighlighting/OutliningIndicators/ContractedBlock.gifpublic class MD5 ...{
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ExpandedSubBlockStart.gifhttp://images.csdn.net/syntaxhighlighting/OutliningIndicators/ContractedSubBlock.gif /**//* 下面这些S11-S44实际上是一个4*4的矩阵，在原始的C实现中是用#define 实现的，
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif 这里把它们实现成为static final是表示了只读，切能在同一个进程空间内的多个
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ExpandedSubBlockEnd.gif Instance间共享*/
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif static final int S11 = 7;
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif static final int S12 = 12;
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif static final int S13 = 17;
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif static final int S14 = 22;
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif static final int S21 = 5;
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif static final int S22 = 9;
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif static final int S23 = 14;
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif static final int S24 = 20;
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif static final int S31 = 4;
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif static final int S32 = 11;
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif static final int S33 = 16;
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif static final int S34 = 23;
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif static final int S41 = 6;
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif static final int S42 = 10;
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif static final int S43 = 15;
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif static final int S44 = 21;
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ExpandedSubBlockStart.gifhttp://images.csdn.net/syntaxhighlighting/OutliningIndicators/ContractedSubBlock.gif static final byte[] PADDING = ...{ -128, 0, 0, 0, 0, 0, 0, 0, 0,
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ExpandedSubBlockEnd.gif 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ExpandedSubBlockStart.gifhttp://images.csdn.net/syntaxhighlighting/OutliningIndicators/ContractedSubBlock.gif /**//* 下面的三个成员是MD5计算过程中用到的3个核心数据，在原始的C实现中
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif 被定义到MD5_CTX结构中
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ExpandedSubBlockEnd.gif */
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif private long[] state = new long[4]; // state (ABCD)
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif private long[] count = new long[2]; // number of bits, modulo 2^64 (lsb first)
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif private byte[] buffer = new byte[64]; // input buffer
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ExpandedSubBlockStart.gifhttp://images.csdn.net/syntaxhighlighting/OutliningIndicators/ContractedSubBlock.gif /**//* digestHexStr是MD5的唯一一个公共成员，是最新一次计算结果的
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif 16进制ASCII表示.
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ExpandedSubBlockEnd.gif */
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif public String digestHexStr;
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ExpandedSubBlockStart.gifhttp://images.csdn.net/syntaxhighlighting/OutliningIndicators/ContractedSubBlock.gif /**//* digest,是最新一次计算结果的2进制内部表示，表示128bit的MD5值.
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ExpandedSubBlockEnd.gif */
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif private byte[] digest = new byte[16];
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ExpandedSubBlockStart.gifhttp://images.csdn.net/syntaxhighlighting/OutliningIndicators/ContractedSubBlock.gif /**//*
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif getMD5ofStr是类MD5最主要的公共方法，入口参数是你想要进行MD5变换的字符串
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif 返回的是变换完的结果，这个结果是从公共成员digestHexStr取得的．
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ExpandedSubBlockEnd.gif */
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ExpandedSubBlockStart.gifhttp://images.csdn.net/syntaxhighlighting/OutliningIndicators/ContractedSubBlock.gif public String getMD5ofStr(String inbuf) ...{
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif md5Init();
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif md5Update(inbuf.getBytes(), inbuf.length());
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif md5Final();
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif digestHexStr = "";
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ExpandedSubBlockStart.gifhttp://images.csdn.net/syntaxhighlighting/OutliningIndicators/ContractedSubBlock.gif for (int i = 0; i < 16; i++) ...{
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif digestHexStr += byteHEX(digest);
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ExpandedSubBlockEnd.gif }
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif return digestHexStr;
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http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif // 这是MD5这个类的标准构造函数，JavaBean要求有一个public的并且没有参数的构造函数
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ExpandedSubBlockStart.gifhttp://images.csdn.net/syntaxhighlighting/OutliningIndicators/ContractedSubBlock.gif public MD5() ...{
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif md5Init();
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif return;
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ExpandedSubBlockEnd.gif }
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ExpandedSubBlockStart.gifhttp://images.csdn.net/syntaxhighlighting/OutliningIndicators/ContractedSubBlock.gif /**//* md5Init是一个初始化函数，初始化核心变量，装入标准的幻数 */
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ExpandedSubBlockStart.gifhttp://images.csdn.net/syntaxhighlighting/OutliningIndicators/ContractedSubBlock.gif private void md5Init() ...{
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif count[0] = 0L;
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif count[1] = 0L;
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif ///* Load magic initialization constants.
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif state[0] = 0x67452301L;
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif state[1] = 0xefcdab89L;
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif state[2] = 0x98badcfeL;
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif state[3] = 0x10325476L;
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif return;
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ExpandedSubBlockEnd.gif }
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ExpandedSubBlockStart.gifhttp://images.csdn.net/syntaxhighlighting/OutliningIndicators/ContractedSubBlock.gif /**//* F, G, H ,I 是4个基本的MD5函数，在原始的MD5的C实现中，由于它们是
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif 简单的位运算，可能出于效率的考虑把它们实现成了宏，在java中，我们把它们
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ExpandedSubBlockEnd.gif 实现成了private方法，名字保持了原来C中的。 */
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ExpandedSubBlockStart.gifhttp://images.csdn.net/syntaxhighlighting/OutliningIndicators/ContractedSubBlock.gif private long F(long x, long y, long z) ...{
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif return (x & y) | ((~x) & z);
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ExpandedSubBlockEnd.gif }
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ExpandedSubBlockStart.gifhttp://images.csdn.net/syntaxhighlighting/OutliningIndicators/ContractedSubBlock.gif private long G(long x, long y, long z) ...{
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif return (x & z) | (y & (~z));
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ExpandedSubBlockEnd.gif }
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ExpandedSubBlockStart.gifhttp://images.csdn.net/syntaxhighlighting/OutliningIndicators/ContractedSubBlock.gif private long H(long x, long y, long z) ...{
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif return x ^ y ^ z;
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ExpandedSubBlockEnd.gif }
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ExpandedSubBlockStart.gifhttp://images.csdn.net/syntaxhighlighting/OutliningIndicators/ContractedSubBlock.gif private long I(long x, long y, long z) ...{
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif return y ^ (x | (~z));
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ExpandedSubBlockEnd.gif }
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ExpandedSubBlockStart.gifhttp://images.csdn.net/syntaxhighlighting/OutliningIndicators/ContractedSubBlock.gif /**//*
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif FF,GG,HH和II将调用F,G,H,I进行近一步变换
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif FF, GG, HH, and II transformations for rounds 1, 2, 3, and 4.
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif Rotation is separate from addition to prevent recomputation.
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ExpandedSubBlockEnd.gif */
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif private long FF(long a, long b, long c, long d,
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