谁有openssl md5标准算法的源码(JAVA的)
急!!!
在线等
各位大哥、大姐们帮帮忙啊~!
急!!!
在线等
各位大哥、大姐们帮帮忙啊~!
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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];
private long[] count = new long[2];
private byte[] buffer = new byte[64];
public String digestHexStr;
private byte[] digest = new byte[16]; public String md5(String inbuf) {
md5Init();
md5Update(inbuf.getBytes(), inbuf.length());
md5Final();
digestHexStr = "";
for (int i = 0; i < 16; i++) {
digestHexStr += byteHEX(digest[i]);
}
return digestHexStr.substring(8,24); } public MD5() {
md5Init(); return;
} private void md5Init() {
count[0] = 0L;
count[1] = 0L;
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;
if ((count[0] += (inputLen << 3)) < (inputLen << 3))
count[1]++;
count[1] += (inputLen >>> 29); partLen = 64 - index;
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;
md5Memcpy(buffer, inbuf, index, i, inputLen - i); } private void md5Final () {
byte[] bits = new byte[8];
int index, padLen;
Encode (bits, count, 8);
index = (int)(count[0] >>> 3) & 0x3f;
padLen = (index < 56) ? (56 - index) : (120 - index);
md5Update (PADDING, padLen);
md5Update(bits, 8);
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];
}
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);
d = FF (d, a, b, c, x[1], S12, 0xe8c7b756L);
c = FF (c, d, a, b, x[2], S13, 0x242070dbL);
b = FF (b, c, d, a, x[3], S14, 0xc1bdceeeL);
a = FF (a, b, c, d, x[4], S11, 0xf57c0fafL);
d = FF (d, a, b, c, x[5], S12, 0x4787c62aL);
c = FF (c, d, a, b, x[6], S13, 0xa8304613L);
b = FF (b, c, d, a, x[7], S14, 0xfd469501L);
a = FF (a, b, c, d, x[8], S11, 0x698098d8L);
d = FF (d, a, b, c, x[9], S12, 0x8b44f7afL);
c = FF (c, d, a, b, x[10], S13, 0xffff5bb1L);
b = FF (b, c, d, a, x[11], S14, 0x895cd7beL);
a = FF (a, b, c, d, x[12], S11, 0x6b901122L);
d = FF (d, a, b, c, x[13], S12, 0xfd987193L);
c = FF (c, d, a, b, x[14], S13, 0xa679438eL);
b = FF (b, c, d, a, x[15], S14, 0x49b40821L);
/* Round 2 */
a = GG (a, b, c, d, x[1], S21, 0xf61e2562L);
d = GG (d, a, b, c, x[6], S22, 0xc040b340L);
c = GG (c, d, a, b, x[11], S23, 0x265e5a51L);
b = GG (b, c, d, a, x[0], S24, 0xe9b6c7aaL);
a = GG (a, b, c, d, x[5], S21, 0xd62f105dL);
d = GG (d, a, b, c, x[10], S22, 0x2441453L);
c = GG (c, d, a, b, x[15], S23, 0xd8a1e681L);
b = GG (b, c, d, a, x[4], S24, 0xe7d3fbc8L);
a = GG (a, b, c, d, x[9], S21, 0x21e1cde6L);
d = GG (d, a, b, c, x[14], S22, 0xc33707d6L);
c = GG (c, d, a, b, x[3], S23, 0xf4d50d87L);
b = GG (b, c, d, a, x[8], S24, 0x455a14edL);
a = GG (a, b, c, d, x[13], S21, 0xa9e3e905L);
d = GG (d, a, b, c, x[2], S22, 0xfcefa3f8L);
c = GG (c, d, a, b, x[7], S23, 0x676f02d9L);
b = GG (b, c, d, a, x[12], S24, 0x8d2a4c8aL);
/* Round 3 */
a = HH (a, b, c, d, x[5], S31, 0xfffa3942L);
d = HH (d, a, b, c, x[8], S32, 0x8771f681L);
c = HH (c, d, a, b, x[11], S33, 0x6d9d6122L);
b = HH (b, c, d, a, x[14], S34, 0xfde5380cL);
a = HH (a, b, c, d, x[1], S31, 0xa4beea44L);
d = HH (d, a, b, c, x[4], S32, 0x4bdecfa9L);
c = HH (c, d, a, b, x[7], S33, 0xf6bb4b60L);
b = HH (b, c, d, a, x[10], S34, 0xbebfbc70L);
a = HH (a, b, c, d, x[13], S31, 0x289b7ec6L);
d = HH (d, a, b, c, x[0], S32, 0xeaa127faL);
c = HH (c, d, a, b, x[3], S33, 0xd4ef3085L);
b = HH (b, c, d, a, x[6], S34, 0x4881d05L);
a = HH (a, b, c, d, x[9], S31, 0xd9d4d039L);
d = HH (d, a, b, c, x[12], S32, 0xe6db99e5L);
c = HH (c, d, a, b, x[15], S33, 0x1fa27cf8L);
b = HH (b, c, d, a, x[2], S34, 0xc4ac5665L);
/* Round 4 */
a = II (a, b, c, d, x[0], S41, 0xf4292244L);
d = II (d, a, b, c, x[7], S42, 0x432aff97L);
c = II (c, d, a, b, x[14], S43, 0xab9423a7L);
b = II (b, c, d, a, x[5], S44, 0xfc93a039L);
a = II (a, b, c, d, x[12], S41, 0x655b59c3L);
d = II (d, a, b, c, x[3], S42, 0x8f0ccc92L);
c = II (c, d, a, b, x[10], S43, 0xffeff47dL);
b = II (b, c, d, a, x[1], S44, 0x85845dd1L);
a = II (a, b, c, d, x[8], S41, 0x6fa87e4fL);
d = II (d, a, b, c, x[15], S42, 0xfe2ce6e0L);
c = II (c, d, a, b, x[6], S43, 0xa3014314L);
b = II (b, c, d, a, x[13], S44, 0x4e0811a1L);
a = II (a, b, c, d, x[4], S41, 0xf7537e82L);
d = II (d, a, b, c, x[11], S42, 0xbd3af235L);
c = II (c, d, a, b, x[2], S43, 0x2ad7d2bbL);
b = II (b, c, d, a, x[9], S44, 0xeb86d391L);
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 toMD5(String source){
MD5 md5 = new MD5();
return md5.md5(source);
}
}
如果为了学习,你直接研究jdk的实现就可以了。
对加密出来的,如何在进行base64编码呢?
BASE64Encoder base64 = new BASE64Encoder();
MD5 md5 = new MD5();
String str = base64.encode(md5.md5("****").getBytes());
我不是学JAVA的,我是学.NET的
我为了写个这还专门去学下JDK?
基本上跟
你对着一只公鸡说--求求你给我生个蛋吧
一样的结果。任何人都可以写一个MD5算法,但所有人写出来的MD5算法运算结果都一样!
BASE64也是这样。
不信你把上面那个兄弟贴出来的代码跟我发给你的代码都运行一下,看看有区别没有。
我也不懂啊!
可是让我做的人就是这么说的啊。
你能贴出来个BASE64的么?
这下被你耍了,这个地方好像是java基础板块,我认为发的所有问题应该都是java语言为基础的。
结果你说你不弄java,而弄.net。
话又说回来,微软不是扬言.net是要超过java的语言么,java里面有的东西,我觉得.net应该不会落下,更何况是加密这种很基本的安全功能,你放心好了,java里面有一个安全包,那么.net下就会有一个安全命名空间,照那个学习一下一样的,而且现在学习了,以后用的机会还大着呢。
那你能帮我写个BASE64类么,就把1楼的MD5加密出来的字符串
再进行BASE64编码下
谢谢了~~~
import java.io.IOException;
import java.security.MessageDigest;import sun.misc.BASE64Encoder;
import sun.misc.BASE64Decoder;/**
* 本类提供通用的安全算法
*/
public class SecurityArithmetic {
public final static byte[] md5(String s) {
byte[] md=null;
try {
byte[] btInput = s.getBytes();
MessageDigest mdInst = MessageDigest.getInstance("MD5");
mdInst.update(btInput);
md = mdInst.digest();
}
catch (Exception e) {
// e.printStackTrace();
return null;
}
return md;
}
public static String base64Encode(byte[] b){
return new BASE64Encoder().encode(b);
} public static byte[] base64Decode(String b){
try {
return new BASE64Decoder().decodeBuffer(b);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
return null;
}
}
public static String md5AndHex(String s){
byte[] b=md5(s);
String temp="";
for (int i=0;i<b.length;i++){
temp+=StringUtils.pad(Integer.toHexString(b[i] & 0xff), 2, '0', true);
}
return temp;
}
public static String md5AndBase64(String s){
return base64Encode(md5(s));
}
/**
* @param args
*/
public static void main(String[] args) {
//d41d8cd98f00b204e9800998ecf8427e
//d41d8cd98f00b204e9800998ecf8427e
System.out.println(md5AndBase64("123456"));
System.out.println(md5AndHex(""));
}}
一楼给出的MD5算法不是标准的MD5算法,MD5的结果应该是16个字节,而一楼给出的代码只是这16个字节中间的8个字节。
对于一个""(什么内容都没有的字符串),MD5然后BASE64后的结果应该是:
1B2M2Y8AsgTpgAmY7PhCfg==
MD5然后HEX(转化为16进制表示)应该是:
d41d8cd98f00b204e9800998ecf8427e
而1楼给出的是MD5后结果截取中间8个字节然后再HEX,所以他给出的结果是:
8f00b204e9800998
MD5 算法的Java Bean
@author:Topcat Tuppin
Last Modified:10,Mar,2005
author:(East)张栋芳
*************************************************/
import java.lang.reflect.*;
/*************************************************
md5 类实现了RSA Data Security, Inc.在提交给IETF
的RFC1321中的MD5 message-digest 算法。
*************************************************/public class MD5 {
/* 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,
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
Instance间共享*/
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 };
/* 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
被定义到MD5_CTX结构中
*/
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
/* digestHexStr是MD5的唯一一个公共成员,是最新一次计算结果的
16进制ASCII表示.
*/
public String digestHexStr;
/* digest,是最新一次计算结果的2进制内部表示,表示128bit的MD5值.
*/
private byte[] digest = new byte[16];
/*
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
返回的是变换完的结果,这个结果是从公共成员digestHexStr取得的.
*/
public String getMD5ofStr(String inbuf) {
md5Init();
md5Update(inbuf.getBytes(), inbuf.length());
md5Final();
digestHexStr = "";
for (int i = 0; i < 16; i++) {
digestHexStr += byteHEX(digest[i]);
}
return digestHexStr; }
// 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
public MD5() {
md5Init(); return;
}
/* md5Init是一个初始化函数,初始化核心变量,装入标准的幻数 */
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;
}
/* 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
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
实现成了private方法,名字保持了原来C中的。 */ 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));
}
/*
FF,GG,HH和II将调用F,G,H,I进行近一步变换
FF, GG, HH, and II transformations for rounds 1, 2, 3, and 4.
Rotation is separate from addition to prevent recomputation.
*/ 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;
}
/*
md5Update是MD5的主计算过程,inbuf是要变换的字节串,inputlen是长度,这个
函数由getMD5ofStr调用,调用之前需要调用md5init,因此把它设计成private的
*/
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); }
/*
md5Final整理和填写输出结果
*/
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); }
/* md5Memcpy是一个内部使用的byte数组的块拷贝函数,从input的inpos开始把len长度的
字节拷贝到output的outpos位置开始
*/ 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];
}
md5Transform是MD5核心变换程序,有md5Update调用,block是分块的原始字节
*/
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; }
/*Encode把long数组按顺序拆成byte数组,因为java的long类型是64bit的,
只拆低32bit,以适应原始C实现的用途
*/
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);
}
}
只合成低32bit,高32bit清零,以适应原始C实现的用途
*/
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;
}
/*
b2iu是我写的一个把byte按照不考虑正负号的原则的"升位"程序,因为java没有unsigned运算
*/
public static long b2iu(byte b) {
return b < 0 ? b & 0x7F + 128 : b;
}
/*byteHEX(),用来把一个byte类型的数转换成十六进制的ASCII表示,
因为java中的byte的toString无法实现这一点,我们又没有C语言中的
sprintf(outbuf,"%02X",ib)
*/
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 void main(String args[]) {
MD5 m = new MD5();
if (Array.getLength(args) == 0) { //如果没有参数,执行标准的Test Suite
System.out.println("MD5 Test suite:");
System.out.println("MD5(\"\"):"+m.getMD5ofStr(""));
System.out.println("MD5(\"a\"):"+m.getMD5ofStr("a"));
System.out.println("MD5(\"abc\"):"+m.getMD5ofStr("abc"));
System.out.println("MD5(\"message digest\"):"+m.getMD5ofStr("message digest"));
System.out.println("MD5(\"abcdefghijklmnopqrstuvwxyz\"):"+
m.getMD5ofStr("abcdefghijklmnopqrstuvwxyz"));
System.out.println("MD5(\"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789\"):"+
m.getMD5ofStr("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"));
}
else
System.out.println("MD5(" + args[0] + ")=" + m.getMD5ofStr(args[0]));
}}