分享JavaScript与Java中MD5使用两个例子_javascript技巧

在网上查了一下，在网上收集了Java与JavaScript中使用的两个例子，试验过，分享下。
1、Java：

package org.bearfly.test.md5;
 
import java.io.UnsupportedEncodingException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
 
public class MD5Utils {
 public static void main(String[] args){
 System.out.println(getMd5String(""));
 System.out.println(MD5("good"));
 }
 
 
 public final static String MD5(String s) {
 char hexDigits[] = { '0', '1', '2', '3', '4',
    '5', '6', '7', '8', '9',
    'A', 'B', 'C', 'D', 'E', 'F' };
 try {
  byte[] btInput = s.getBytes();
 //获得MD5摘要算法的 MessageDigest 对象
  MessageDigest mdInst = MessageDigest.getInstance("MD5");
 //使用指定的字节更新摘要
  mdInst.update(btInput);
 //获得密文
  byte[] md = mdInst.digest();
 //把密文转换成十六进制的字符串形式
  int j = md.length;
  char str[] = new char[j * 2];
  int k = 0;
  for (int i = 0; i >> 4 & 0xf];
  str[k++] = hexDigits[byte0 & 0xf];
  }
  return new String(str);
 }
 catch (Exception e) {
  e.printStackTrace();
  return null;
 }
 }
 
 
 
 public static String getMd5String(String str){
 MessageDigest messageDigest = null; 
  
 try { 
  messageDigest = MessageDigest.getInstance("MD5"); 
 
  messageDigest.reset(); 
 
  messageDigest.update(str.getBytes("UTF-8")); 
 } catch (NoSuchAlgorithmException e) { 
  System.out.println("NoSuchAlgorithmException caught!"); 
  System.exit(-1); 
 } catch (UnsupportedEncodingException e) { 
  e.printStackTrace(); 
 } 
 
 byte[] byteArray = messageDigest.digest(); 
 
 StringBuffer md5StrBuff = new StringBuffer(); 
 
 for (int i = 0; i 

2、JavaScript:
md5.js

var hexcase = 0; /* hex output format. 0 - lowercase; 1 - uppercase */
var b64pad = ""; /* base-64 pad character. "=" for strict RFC compliance */
var chrsz = 8; /* bits per input character. 8 - ASCII; 16 - Unicode */
 
/*
 * These are the functions you'll usually want to call
 * They take string arguments and return either hex or base-64 encoded strings
 */
function hex_md5(s){ return binl2hex(core_md5(str2binl(s), s.length * chrsz));}
function b64_md5(s){ return binl2b64(core_md5(str2binl(s), s.length * chrsz));}
function str_md5(s){ return binl2str(core_md5(str2binl(s), s.length * chrsz));}
function hex_hmac_md5(key, data) { return binl2hex(core_hmac_md5(key, data)); }
function b64_hmac_md5(key, data) { return binl2b64(core_hmac_md5(key, data)); }
function str_hmac_md5(key, data) { return binl2str(core_hmac_md5(key, data)); }
 
/*
 * Perform a simple self-test to see if the VM is working
 */
function md5_vm_test()
{
 return hex_md5("abc") == "900150983cd24fb0d6963f7d28e17f72";
}
 
/*
 * Calculate the MD5 of an array of little-endian words, and a bit length
 */
function core_md5(x, len)
{
 /* append padding */
 x[len >> 5] |= 0x80 >> 9)  16) bkey = core_md5(bkey, key.length * chrsz);
 
 var ipad = Array(16), opad = Array(16);
 for(var i = 0; i > 16) + (y >> 16) + (lsw >> 16);
 return (msw >> (32 - cnt));
}
 
/*
 * Convert a string to an array of little-endian words
 * If chrsz is ASCII, characters >255 have their hi-byte silently ignored.
 */
function str2binl(str)
{
 var bin = Array();
 var mask = (1 >5] |= (str.charCodeAt(i / chrsz) & mask) >5] >>> (i % 32)) & mask);
 return str;
}
 
/*
 * Convert an array of little-endian words to a hex string.
 */
function binl2hex(binarray)
{
 var hex_tab = hexcase ? "0123456789ABCDEF" : "0123456789abcdef";
 var str = "";
 for(var i = 0; i >2] >> ((i%4)*8+4)) & 0xF) +
  hex_tab.charAt((binarray[i>>2] >> ((i%4)*8 )) & 0xF);
 }
 return str;
}
 
/*
 * Convert an array of little-endian words to a base-64 string
 */
function binl2b64(binarray)
{
 var tab = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
 var str = "";
 for(var i = 0; i > 2] >> 8 * ( i %4)) & 0xFF) > 2] >> 8 * ((i+1)%4)) & 0xFF) > 2] >> 8 * ((i+2)%4)) & 0xFF);
 for(var j = 0; j  binarray.length * 32) str += b64pad;
 else str += tab.charAt((triplet >> 6*(3-j)) & 0x3F);
 }
 }
 return str;
}

md5.html

补充：javascript 的MD5代码备份，跟java互通

 var MD5 = function (string) { 
 
 function RotateLeft(lValue, iShiftBits) { 
  return (lValue>>(32-iShiftBits)); 
 } 
 
 function AddUnsigned(lX,lY) { 
  var lX4,lY4,lX8,lY8,lResult; 
  lX8 = (lX & 0x80000000); 
  lY8 = (lY & 0x80000000); 
  lX4 = (lX & 0x40000000); 
  lY4 = (lY & 0x40000000); 
  lResult = (lX & 0x3FFFFFFF)+(lY & 0x3FFFFFFF); 
  if (lX4 & lY4) { 
  return (lResult ^ 0x80000000 ^ lX8 ^ lY8); 
  } 
  if (lX4 | lY4) { 
  if (lResult & 0x40000000) { 
   return (lResult ^ 0xC0000000 ^ lX8 ^ lY8); 
  } else { 
   return (lResult ^ 0x40000000 ^ lX8 ^ lY8); 
  } 
  } else { 
  return (lResult ^ lX8 ^ lY8); 
  } 
 } 
 
 function F(x,y,z) { return (x & y) | ((~x) & z); } 
 function G(x,y,z) { return (x & z) | (y & (~z)); } 
 function H(x,y,z) { return (x ^ y ^ z); } 
 function I(x,y,z) { return (y ^ (x | (~z))); } 
 
 function FF(a,b,c,d,x,s,ac) { 
  a = AddUnsigned(a, AddUnsigned(AddUnsigned(F(b, c, d), x), ac)); 
  return AddUnsigned(RotateLeft(a, s), b); 
 }; 
 
 function GG(a,b,c,d,x,s,ac) { 
  a = AddUnsigned(a, AddUnsigned(AddUnsigned(G(b, c, d), x), ac)); 
  return AddUnsigned(RotateLeft(a, s), b); 
 }; 
 
 function HH(a,b,c,d,x,s,ac) { 
  a = AddUnsigned(a, AddUnsigned(AddUnsigned(H(b, c, d), x), ac)); 
  return AddUnsigned(RotateLeft(a, s), b); 
 }; 
 
 function II(a,b,c,d,x,s,ac) { 
  a = AddUnsigned(a, AddUnsigned(AddUnsigned(I(b, c, d), x), ac)); 
  return AddUnsigned(RotateLeft(a, s), b); 
 }; 
 
 function ConvertToWordArray(string) { 
  var lWordCount; 
  var lMessageLength = string.length; 
  var lNumberOfWords_temp1=lMessageLength + 8; 
  var lNumberOfWords_temp2=(lNumberOfWords_temp1-(lNumberOfWords_temp1 % 64))/64; 
  var lNumberOfWords = (lNumberOfWords_temp2+1)*16; 
  var lWordArray=Array(lNumberOfWords-1); 
  var lBytePosition = 0; 
  var lByteCount = 0; 
  while ( lByteCount >>29; 
  return lWordArray; 
 }; 
 
 function WordToHex(lValue) { 
  var WordToHexValue="",WordToHexValue_temp="",lByte,lCount; 
  for (lCount = 0;lCount>>(lCount*8)) & 255; 
  WordToHexValue_temp = "0" + lByte.toString(16); 
  WordToHexValue = WordToHexValue + WordToHexValue_temp.substr(WordToHexValue_temp.length-2,2); 
  } 
  return WordToHexValue; 
 }; 
 
 function Utf8Encode(string) { 
  string = string.replace(/\r\n/g,"\n"); 
  var utftext = ""; 
 
  for (var n = 0; n  127) && (c > 6) | 192); 
   utftext += String.fromCharCode((c & 63) | 128); 
  } 
  else { 
   utftext += String.fromCharCode((c >> 12) | 224); 
   utftext += String.fromCharCode(((c >> 6) & 63) | 128); 
   utftext += String.fromCharCode((c & 63) | 128); 
  } 
 
  } 
 
  return utftext; 
 }; 
 
 var x=Array(); 
 var k,AA,BB,CC,DD,a,b,c,d; 
 var S11=7, S12=12, S13=17, S14=22; 
 var S21=5, S22=9 , S23=14, S24=20; 
 var S31=4, S32=11, S33=16, S34=23; 
 var S41=6, S42=10, S43=15, S44=21; 
 
 string = Utf8Encode(string); 
 
 x = ConvertToWordArray(string); 
 
 a = 0x67452301; b = 0xEFCDAB89; c = 0x98BADCFE; d = 0x10325476; 
 
 for (k=0;k

以上就是本文的全部内容，java、javascript、MD5三者之间的关系，使用，希望对大家的学习有所帮助。