JS常用加密编码与算法实例总结


Posted in Javascript onDecember 22, 2016

本文实例讲述了JS常用加密编码与算法。分享给大家供大家参考,具体如下:

一:UTF8编码函数

function URLEncode(Str){
 if(Str==null||Str=="")
  return "";
 var newStr="";
 function toCase(sStr){
  return sStr.toString(16).toUpperCase();
  }
 for(var i=0,icode,len=Str.length;i<len;i++){
  icode=Str.charCodeAt(i);
  if( icode<0x10)
   newStr+="%0"+icode.toString(16).toUpperCase();
  else if(icode<0x80){
   if(icode==0x20)
    newStr+="+";
   else if((icode>=0x30&&icode<=0x39)||(icode>=0x41&&icode<=0x5A)||(icode>=0x61&&icode<=0x7A))
    newStr+=Str.charAt(i);
   else
    newStr+="%"+toCase(icode);
   }
  else if(icode<0x800){
   newStr+="%"+toCase(0xC0+(icode>>6));
   newStr+="%"+toCase(0x80+icode%0x40);
   }
  else{
   newStr+="%"+toCase(0xE0+(icode>>12));
   newStr+="%"+toCase(0x80+(icode>>6)%0x40);
   newStr+="%"+toCase(0x80+icode%0x40);
   }
  }
 return newStr;
 }

二:Base64编码,解码函数

var base64EncodeChars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
var base64DecodeChars = new Array(
  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 62, -1, -1, -1, 63,
  52, 53, 54, 55, 56, 57, 58, 59, 60, 61, -1, -1, -1, -1, -1, -1,
  -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
  15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, -1, -1, -1, -1, -1,
  -1, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40,
  41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, -1, -1, -1, -1, -1);
function base64encode(str) {
  var out, i, len;
  var c1, c2, c3;
  len = str.length;
  i = 0;
  out = "";
  while(i < len) {
  c1 = str.charCodeAt(i++) & 0xff;
  if(i == len)
  {
    out += base64EncodeChars.charAt(c1 >> 2);
    out += base64EncodeChars.charAt((c1 & 0x3) << 4);
    out += "==";
    break;
  }
  c2 = str.charCodeAt(i++);
  if(i == len)
  {
    out += base64EncodeChars.charAt(c1 >> 2);
    out += base64EncodeChars.charAt(((c1 & 0x3)<< 4) | ((c2 & 0xF0) >> 4));
    out += base64EncodeChars.charAt((c2 & 0xF) << 2);
    out += "=";
    break;
  }
  c3 = str.charCodeAt(i++);
  out += base64EncodeChars.charAt(c1 >> 2);
  out += base64EncodeChars.charAt(((c1 & 0x3)<< 4) | ((c2 & 0xF0) >> 4));
  out += base64EncodeChars.charAt(((c2 & 0xF) << 2) | ((c3 & 0xC0) >>6));
  out += base64EncodeChars.charAt(c3 & 0x3F);
  }
  return out;
}
function base64decode(str) {
  var c1, c2, c3, c4;
  var i, len, out;
  len = str.length;
  i = 0;
  out = "";
  while(i < len) {
  /* c1 */
  do {
    c1 = base64DecodeChars[str.charCodeAt(i++) & 0xff];
  } while(i < len && c1 == -1);
  if(c1 == -1)
    break;
  /* c2 */
  do {
    c2 = base64DecodeChars[str.charCodeAt(i++) & 0xff];
  } while(i < len && c2 == -1);
  if(c2 == -1)
    break;
  out += String.fromCharCode((c1 << 2) | ((c2 & 0x30) >> 4));
  /* c3 */
  do {
    c3 = str.charCodeAt(i++) & 0xff;
    if(c3 == 61)
    return out;
    c3 = base64DecodeChars[c3];
  } while(i < len && c3 == -1);
  if(c3 == -1)
    break;
  out += String.fromCharCode(((c2 & 0XF) << 4) | ((c3 & 0x3C) >> 2));
  /* c4 */
  do {
    c4 = str.charCodeAt(i++) & 0xff;
    if(c4 == 61)
    return out;
    c4 = base64DecodeChars[c4];
  } while(i < len && c4 == -1);
  if(c4 == -1)
    break;
  out += String.fromCharCode(((c3 & 0x03) << 6) | c4);
  }
  return out;
}
function utf16to8(str) {
  var out, i, len, c;
  out = "";
  len = str.length;
  for(i = 0; i < len; i++) {
  c = str.charCodeAt(i);
  if ((c >= 0x0001) && (c <= 0x007F)) {
    out += str.charAt(i);
  } else if (c > 0x07FF) {
    out += String.fromCharCode(0xE0 | ((c >> 12) & 0x0F));
    out += String.fromCharCode(0x80 | ((c >> 6) & 0x3F));
    out += String.fromCharCode(0x80 | ((c >> 0) & 0x3F));
  } else {
    out += String.fromCharCode(0xC0 | ((c >> 6) & 0x1F));
    out += String.fromCharCode(0x80 | ((c >> 0) & 0x3F));
  }
  }
  return out;
}
function utf8to16(str) {
  var out, i, len, c;
  var char2, char3;
  out = "";
  len = str.length;
  i = 0;
  while(i < len) {
  c = str.charCodeAt(i++);
  switch(c >> 4)
  {
   case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
    // 0xxxxxxx
    out += str.charAt(i-1);
    break;
   case 12: case 13:
    // 110x xxxx 10xx xxxx
    char2 = str.charCodeAt(i++);
    out += String.fromCharCode(((c & 0x1F) << 6) | (char2 & 0x3F));
    break;
   case 14:
    // 1110 xxxx 10xx xxxx 10xx xxxx
    char2 = str.charCodeAt(i++);
    char3 = str.charCodeAt(i++);
    out += String.fromCharCode(((c & 0x0F) << 12) |
            ((char2 & 0x3F) << 6) |
            ((char3 & 0x3F) << 0));
    break;
  }
  }
  return out;
}
function doit() {
  var f = document.f
  f.output.value = base64encode(utf16to8(f.source.value))
  f.decode.value = utf8to16(base64decode(f.output.value))
}

三:MD5

/*
 * A JavaScript implementation of the RSA Data Security, Inc. MD5 Message
 * Digest Algorithm, as defined in RFC 1321.
 * Version 2.1 Copyright (C) Paul Johnston 1999 - 2002.
 * Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet
 * Distributed under the BSD License
 * See http://pajhome.org.uk/crypt/md5 for more info.
 */
/*
 * Configurable variables. You may need to tweak these to be compatible with
 * the server-side, but the defaults work in most cases.
 */
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 << ((len) % 32);
 x[(((len + 64) >>> 9) << 4) + 14] = len;
 var a = 1732584193;
 var b = -271733879;
 var c = -1732584194;
 var d = 271733878;
 for(var i = 0; i < x.length; i += 16)
 {
  var olda = a;
  var oldb = b;
  var oldc = c;
  var oldd = d;
  a = md5_ff(a, b, c, d, x[i+ 0], 7 , -680876936);
  d = md5_ff(d, a, b, c, x[i+ 1], 12, -389564586);
  c = md5_ff(c, d, a, b, x[i+ 2], 17, 606105819);
  b = md5_ff(b, c, d, a, x[i+ 3], 22, -1044525330);
  a = md5_ff(a, b, c, d, x[i+ 4], 7 , -176418897);
  d = md5_ff(d, a, b, c, x[i+ 5], 12, 1200080426);
  c = md5_ff(c, d, a, b, x[i+ 6], 17, -1473231341);
  b = md5_ff(b, c, d, a, x[i+ 7], 22, -45705983);
  a = md5_ff(a, b, c, d, x[i+ 8], 7 , 1770035416);
  d = md5_ff(d, a, b, c, x[i+ 9], 12, -1958414417);
  c = md5_ff(c, d, a, b, x[i+10], 17, -42063);
  b = md5_ff(b, c, d, a, x[i+11], 22, -1990404162);
  a = md5_ff(a, b, c, d, x[i+12], 7 , 1804603682);
  d = md5_ff(d, a, b, c, x[i+13], 12, -40341101);
  c = md5_ff(c, d, a, b, x[i+14], 17, -1502002290);
  b = md5_ff(b, c, d, a, x[i+15], 22, 1236535329);
  a = md5_gg(a, b, c, d, x[i+ 1], 5 , -165796510);
  d = md5_gg(d, a, b, c, x[i+ 6], 9 , -1069501632);
  c = md5_gg(c, d, a, b, x[i+11], 14, 643717713);
  b = md5_gg(b, c, d, a, x[i+ 0], 20, -373897302);
  a = md5_gg(a, b, c, d, x[i+ 5], 5 , -701558691);
  d = md5_gg(d, a, b, c, x[i+10], 9 , 38016083);
  c = md5_gg(c, d, a, b, x[i+15], 14, -660478335);
  b = md5_gg(b, c, d, a, x[i+ 4], 20, -405537848);
  a = md5_gg(a, b, c, d, x[i+ 9], 5 , 568446438);
  d = md5_gg(d, a, b, c, x[i+14], 9 , -1019803690);
  c = md5_gg(c, d, a, b, x[i+ 3], 14, -187363961);
  b = md5_gg(b, c, d, a, x[i+ 8], 20, 1163531501);
  a = md5_gg(a, b, c, d, x[i+13], 5 , -1444681467);
  d = md5_gg(d, a, b, c, x[i+ 2], 9 , -51403784);
  c = md5_gg(c, d, a, b, x[i+ 7], 14, 1735328473);
  b = md5_gg(b, c, d, a, x[i+12], 20, -1926607734);
  a = md5_hh(a, b, c, d, x[i+ 5], 4 , -378558);
  d = md5_hh(d, a, b, c, x[i+ 8], 11, -2022574463);
  c = md5_hh(c, d, a, b, x[i+11], 16, 1839030562);
  b = md5_hh(b, c, d, a, x[i+14], 23, -35309556);
  a = md5_hh(a, b, c, d, x[i+ 1], 4 , -1530992060);
  d = md5_hh(d, a, b, c, x[i+ 4], 11, 1272893353);
  c = md5_hh(c, d, a, b, x[i+ 7], 16, -155497632);
  b = md5_hh(b, c, d, a, x[i+10], 23, -1094730640);
  a = md5_hh(a, b, c, d, x[i+13], 4 , 681279174);
  d = md5_hh(d, a, b, c, x[i+ 0], 11, -358537222);
  c = md5_hh(c, d, a, b, x[i+ 3], 16, -722521979);
  b = md5_hh(b, c, d, a, x[i+ 6], 23, 76029189);
  a = md5_hh(a, b, c, d, x[i+ 9], 4 , -640364487);
  d = md5_hh(d, a, b, c, x[i+12], 11, -421815835);
  c = md5_hh(c, d, a, b, x[i+15], 16, 530742520);
  b = md5_hh(b, c, d, a, x[i+ 2], 23, -995338651);
  a = md5_ii(a, b, c, d, x[i+ 0], 6 , -198630844);
  d = md5_ii(d, a, b, c, x[i+ 7], 10, 1126891415);
  c = md5_ii(c, d, a, b, x[i+14], 15, -1416354905);
  b = md5_ii(b, c, d, a, x[i+ 5], 21, -57434055);
  a = md5_ii(a, b, c, d, x[i+12], 6 , 1700485571);
  d = md5_ii(d, a, b, c, x[i+ 3], 10, -1894986606);
  c = md5_ii(c, d, a, b, x[i+10], 15, -1051523);
  b = md5_ii(b, c, d, a, x[i+ 1], 21, -2054922799);
  a = md5_ii(a, b, c, d, x[i+ 8], 6 , 1873313359);
  d = md5_ii(d, a, b, c, x[i+15], 10, -30611744);
  c = md5_ii(c, d, a, b, x[i+ 6], 15, -1560198380);
  b = md5_ii(b, c, d, a, x[i+13], 21, 1309151649);
  a = md5_ii(a, b, c, d, x[i+ 4], 6 , -145523070);
  d = md5_ii(d, a, b, c, x[i+11], 10, -1120210379);
  c = md5_ii(c, d, a, b, x[i+ 2], 15, 718787259);
  b = md5_ii(b, c, d, a, x[i+ 9], 21, -343485551);
  a = safe_add(a, olda);
  b = safe_add(b, oldb);
  c = safe_add(c, oldc);
  d = safe_add(d, oldd);
 }
 return Array(a, b, c, d);
}
/*
 * These functions implement the four basic operations the algorithm uses.
 */
function md5_cmn(q, a, b, x, s, t)
{
 return safe_add(bit_rol(safe_add(safe_add(a, q), safe_add(x, t)), s),b);
}
function md5_ff(a, b, c, d, x, s, t)
{
 return md5_cmn((b & c) | ((~b) & d), a, b, x, s, t);
}
function md5_gg(a, b, c, d, x, s, t)
{
 return md5_cmn((b & d) | (c & (~d)), a, b, x, s, t);
}
function md5_hh(a, b, c, d, x, s, t)
{
 return md5_cmn(b ^ c ^ d, a, b, x, s, t);
}
function md5_ii(a, b, c, d, x, s, t)
{
 return md5_cmn(c ^ (b | (~d)), a, b, x, s, t);
}
/*
 * Calculate the HMAC-MD5, of a key and some data
 */
function core_hmac_md5(key, data)
{
 var bkey = str2binl(key);
 if(bkey.length > 16) bkey = core_md5(bkey, key.length * chrsz);
 var ipad = Array(16), opad = Array(16);
 for(var i = 0; i < 16; i++)
 {
  ipad[i] = bkey[i] ^ 0x36363636;
  opad[i] = bkey[i] ^ 0x5C5C5C5C;
 }
 var hash = core_md5(ipad.concat(str2binl(data)), 512 + data.length * chrsz);
 return core_md5(opad.concat(hash), 512 + 128);
}
/*
 * Add integers, wrapping at 2^32. This uses 16-bit operations internally
 * to work around bugs in some JS interpreters.
 */
function safe_add(x, y)
{
 var lsw = (x & 0xFFFF) + (y & 0xFFFF);
 var msw = (x >> 16) + (y >> 16) + (lsw >> 16);
 return (msw << 16) | (lsw & 0xFFFF);
}
/*
 * Bitwise rotate a 32-bit number to the left.
 */
function bit_rol(num, cnt)
{
 return (num << cnt) | (num >>> (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 << chrsz) - 1;
 for(var i = 0; i < str.length * chrsz; i += chrsz)
  bin[i>>5] |= (str.charCodeAt(i / chrsz) & mask) << (i%32);
 return bin;
}
/*
 * Convert an array of little-endian words to a string
 */
function binl2str(bin)
{
 var str = "";
 var mask = (1 << chrsz) - 1;
 for(var i = 0; i < bin.length * 32; i += chrsz)
  str += String.fromCharCode((bin[i>>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 < binarray.length * 4; i++)
 {
  str += hex_tab.charAt((binarray[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 < binarray.length * 4; i += 3)
 {
  var triplet = (((binarray[i  >> 2] >> 8 * ( i  %4)) & 0xFF) << 16)
        | (((binarray[i+1 >> 2] >> 8 * ((i+1)%4)) & 0xFF) << 8 )
        | ((binarray[i+2 >> 2] >> 8 * ((i+2)%4)) & 0xFF);
  for(var j = 0; j < 4; j++)
  {
   if(i * 8 + j * 6 > binarray.length * 32) str += b64pad;
   else str += tab.charAt((triplet >> 6*(3-j)) & 0x3F);
  }
 }
 return str;
}

MD4算法

/*
 * A JavaScript implementation of the RSA Data Security, Inc. MD4 Message
 * Digest Algorithm, as defined in RFC 1320.
 * Version 2.1 Copyright (C) Jerrad Pierce, Paul Johnston 1999 - 2002.
 * Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet
 * Distributed under the BSD License
 * See http://pajhome.org.uk/crypt/md5 for more info.
 */
/*
 * Configurable variables. You may need to tweak these to be compatible with
 * the server-side, but the defaults work in most cases.
 */
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
 */
function hex_md4(s){ return binl2hex(core_md4(str2binl(s), s.length * chrsz));}
function b64_md4(s){ return binl2b64(core_md4(str2binl(s), s.length * chrsz));}
function str_md4(s){ return binl2str(core_md4(str2binl(s), s.length * chrsz));}
function hex_hmac_md4(key, data) { return binl2hex(core_hmac_md4(key, data)); }
function b64_hmac_md4(key, data) { return binl2b64(core_hmac_md4(key, data)); }
function str_hmac_md4(key, data) { return binl2str(core_hmac_md4(key, data)); }
/*
 * Perform a simple self-test to see if the VM is working
 */
function md4_vm_test()
{
 return hex_md4("abc") == "a448017aaf21d8525fc10ae87aa6729d";
}
/*
 * Calculate the MD4 of an array of little-endian words, and a bit length
 */
function core_md4(x, len)
{
 /* append padding */
 x[len >> 5] |= 0x80 << (len % 32);
 x[(((len + 64) >>> 9) << 4) + 14] = len;
 var a = 1732584193;
 var b = -271733879;
 var c = -1732584194;
 var d = 271733878;
 for(var i = 0; i < x.length; i += 16)
 {
  var olda = a;
  var oldb = b;
  var oldc = c;
  var oldd = d;
  a = md4_ff(a, b, c, d, x[i+ 0], 3 );
  d = md4_ff(d, a, b, c, x[i+ 1], 7 );
  c = md4_ff(c, d, a, b, x[i+ 2], 11);
  b = md4_ff(b, c, d, a, x[i+ 3], 19);
  a = md4_ff(a, b, c, d, x[i+ 4], 3 );
  d = md4_ff(d, a, b, c, x[i+ 5], 7 );
  c = md4_ff(c, d, a, b, x[i+ 6], 11);
  b = md4_ff(b, c, d, a, x[i+ 7], 19);
  a = md4_ff(a, b, c, d, x[i+ 8], 3 );
  d = md4_ff(d, a, b, c, x[i+ 9], 7 );
  c = md4_ff(c, d, a, b, x[i+10], 11);
  b = md4_ff(b, c, d, a, x[i+11], 19);
  a = md4_ff(a, b, c, d, x[i+12], 3 );
  d = md4_ff(d, a, b, c, x[i+13], 7 );
  c = md4_ff(c, d, a, b, x[i+14], 11);
  b = md4_ff(b, c, d, a, x[i+15], 19);
  a = md4_gg(a, b, c, d, x[i+ 0], 3 );
  d = md4_gg(d, a, b, c, x[i+ 4], 5 );
  c = md4_gg(c, d, a, b, x[i+ 8], 9 );
  b = md4_gg(b, c, d, a, x[i+12], 13);
  a = md4_gg(a, b, c, d, x[i+ 1], 3 );
  d = md4_gg(d, a, b, c, x[i+ 5], 5 );
  c = md4_gg(c, d, a, b, x[i+ 9], 9 );
  b = md4_gg(b, c, d, a, x[i+13], 13);
  a = md4_gg(a, b, c, d, x[i+ 2], 3 );
  d = md4_gg(d, a, b, c, x[i+ 6], 5 );
  c = md4_gg(c, d, a, b, x[i+10], 9 );
  b = md4_gg(b, c, d, a, x[i+14], 13);
  a = md4_gg(a, b, c, d, x[i+ 3], 3 );
  d = md4_gg(d, a, b, c, x[i+ 7], 5 );
  c = md4_gg(c, d, a, b, x[i+11], 9 );
  b = md4_gg(b, c, d, a, x[i+15], 13);
  a = md4_hh(a, b, c, d, x[i+ 0], 3 );
  d = md4_hh(d, a, b, c, x[i+ 8], 9 );
  c = md4_hh(c, d, a, b, x[i+ 4], 11);
  b = md4_hh(b, c, d, a, x[i+12], 15);
  a = md4_hh(a, b, c, d, x[i+ 2], 3 );
  d = md4_hh(d, a, b, c, x[i+10], 9 );
  c = md4_hh(c, d, a, b, x[i+ 6], 11);
  b = md4_hh(b, c, d, a, x[i+14], 15);
  a = md4_hh(a, b, c, d, x[i+ 1], 3 );
  d = md4_hh(d, a, b, c, x[i+ 9], 9 );
  c = md4_hh(c, d, a, b, x[i+ 5], 11);
  b = md4_hh(b, c, d, a, x[i+13], 15);
  a = md4_hh(a, b, c, d, x[i+ 3], 3 );
  d = md4_hh(d, a, b, c, x[i+11], 9 );
  c = md4_hh(c, d, a, b, x[i+ 7], 11);
  b = md4_hh(b, c, d, a, x[i+15], 15);
  a = safe_add(a, olda);
  b = safe_add(b, oldb);
  c = safe_add(c, oldc);
  d = safe_add(d, oldd);
 }
 return Array(a, b, c, d);
}
/*
 * These functions implement the basic operation for each round of the
 * algorithm.
 */
function md4_cmn(q, a, b, x, s, t)
{
 return safe_add(rol(safe_add(safe_add(a, q), safe_add(x, t)), s), b);
}
function md4_ff(a, b, c, d, x, s)
{
 return md4_cmn((b & c) | ((~b) & d), a, 0, x, s, 0);
}
function md4_gg(a, b, c, d, x, s)
{
 return md4_cmn((b & c) | (b & d) | (c & d), a, 0, x, s, 1518500249);
}
function md4_hh(a, b, c, d, x, s)
{
 return md4_cmn(b ^ c ^ d, a, 0, x, s, 1859775393);
}
/*
 * Calculate the HMAC-MD4, of a key and some data
 */
function core_hmac_md4(key, data)
{
 var bkey = str2binl(key);
 if(bkey.length > 16) bkey = core_md4(bkey, key.length * chrsz);
 var ipad = Array(16), opad = Array(16);
 for(var i = 0; i < 16; i++)
 {
  ipad[i] = bkey[i] ^ 0x36363636;
  opad[i] = bkey[i] ^ 0x5C5C5C5C;
 }
 var hash = core_md4(ipad.concat(str2binl(data)), 512 + data.length * chrsz);
 return core_md4(opad.concat(hash), 512 + 128);
}
/*
 * Add integers, wrapping at 2^32. This uses 16-bit operations internally
 * to work around bugs in some JS interpreters.
 */
function safe_add(x, y)
{
 var lsw = (x & 0xFFFF) + (y & 0xFFFF);
 var msw = (x >> 16) + (y >> 16) + (lsw >> 16);
 return (msw << 16) | (lsw & 0xFFFF);
}
/*
 * Bitwise rotate a 32-bit number to the left.
 */
function rol(num, cnt)
{
 return (num << cnt) | (num >>> (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 << chrsz) - 1;
 for(var i = 0; i < str.length * chrsz; i += chrsz)
  bin[i>>5] |= (str.charCodeAt(i / chrsz) & mask) << (i%32);
 return bin;
}
/*
 * Convert an array of little-endian words to a string
 */
function binl2str(bin)
{
 var str = "";
 var mask = (1 << chrsz) - 1;
 for(var i = 0; i < bin.length * 32; i += chrsz)
  str += String.fromCharCode((bin[i>>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 < binarray.length * 4; i++)
 {
  str += hex_tab.charAt((binarray[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 < binarray.length * 4; i += 3)
 {
  var triplet = (((binarray[i  >> 2] >> 8 * ( i  %4)) & 0xFF) << 16)
        | (((binarray[i+1 >> 2] >> 8 * ((i+1)%4)) & 0xFF) << 8 )
        | ((binarray[i+2 >> 2] >> 8 * ((i+2)%4)) & 0xFF);
  for(var j = 0; j < 4; j++)
  {
   if(i * 8 + j * 6 > binarray.length * 32) str += b64pad;
   else str += tab.charAt((triplet >> 6*(3-j)) & 0x3F);
  }
 }
 return str;
}

SHA1算法

/*
 * A JavaScript implementation of the Secure Hash Algorithm, SHA-1, as defined
 * in FIPS PUB 180-1
 * Version 2.1a Copyright Paul Johnston 2000 - 2002.
 * Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet
 * Distributed under the BSD License
 * See http://pajhome.org.uk/crypt/md5 for details.
 */
/*
 * Configurable variables. You may need to tweak these to be compatible with
 * the server-side, but the defaults work in most cases.
 */
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_sha1(s){return binb2hex(core_sha1(str2binb(s),s.length * chrsz));}
function b64_sha1(s){return binb2b64(core_sha1(str2binb(s),s.length * chrsz));}
function str_sha1(s){return binb2str(core_sha1(str2binb(s),s.length * chrsz));}
function hex_hmac_sha1(key, data){ return binb2hex(core_hmac_sha1(key, data));}
function b64_hmac_sha1(key, data){ return binb2b64(core_hmac_sha1(key, data));}
function str_hmac_sha1(key, data){ return binb2str(core_hmac_sha1(key, data));}
/*
 * Perform a simple self-test to see if the VM is working
 */
function sha1_vm_test()
{
 return hex_sha1("abc") == "a9993e364706816aba3e25717850c26c9cd0d89d";
}
/*
 * Calculate the SHA-1 of an array of big-endian words, and a bit length
 */
function core_sha1(x, len)
{
 /* append padding */
 x[len >> 5] |= 0x80 << (24 - len % 32);
 x[((len + 64 >> 9) << 4) + 15] = len;
 var w = Array(80);
 var a = 1732584193;
 var b = -271733879;
 var c = -1732584194;
 var d = 271733878;
 var e = -1009589776;
 for(var i = 0; i < x.length; i += 16)
 {
  var olda = a;
  var oldb = b;
  var oldc = c;
  var oldd = d;
  var olde = e;
  for(var j = 0; j < 80; j++)
  {
   if(j < 16) w[j] = x[i + j];
   else w[j] = rol(w[j-3] ^ w[j-8] ^ w[j-14] ^ w[j-16], 1);
   var t = safe_add(safe_add(rol(a, 5), sha1_ft(j, b, c, d)),
            safe_add(safe_add(e, w[j]), sha1_kt(j)));
   e = d;
   d = c;
   c = rol(b, 30);
   b = a;
   a = t;
  }
  a = safe_add(a, olda);
  b = safe_add(b, oldb);
  c = safe_add(c, oldc);
  d = safe_add(d, oldd);
  e = safe_add(e, olde);
 }
 return Array(a, b, c, d, e);
}
/*
 * Perform the appropriate triplet combination function for the current
 * iteration
 */
function sha1_ft(t, b, c, d)
{
 if(t < 20) return (b & c) | ((~b) & d);
 if(t < 40) return b ^ c ^ d;
 if(t < 60) return (b & c) | (b & d) | (c & d);
 return b ^ c ^ d;
}
/*
 * Determine the appropriate additive constant for the current iteration
 */
function sha1_kt(t)
{
 return (t < 20) ? 1518500249 : (t < 40) ? 1859775393 :
     (t < 60) ? -1894007588 : -899497514;
}
/*
 * Calculate the HMAC-SHA1 of a key and some data
 */
function core_hmac_sha1(key, data)
{
 var bkey = str2binb(key);
 if(bkey.length > 16) bkey = core_sha1(bkey, key.length * chrsz);
 var ipad = Array(16), opad = Array(16);
 for(var i = 0; i < 16; i++)
 {
  ipad[i] = bkey[i] ^ 0x36363636;
  opad[i] = bkey[i] ^ 0x5C5C5C5C;
 }
 var hash = core_sha1(ipad.concat(str2binb(data)), 512 + data.length * chrsz);
 return core_sha1(opad.concat(hash), 512 + 160);
}
/*
 * Add integers, wrapping at 2^32. This uses 16-bit operations internally
 * to work around bugs in some JS interpreters.
 */
function safe_add(x, y)
{
 var lsw = (x & 0xFFFF) + (y & 0xFFFF);
 var msw = (x >> 16) + (y >> 16) + (lsw >> 16);
 return (msw << 16) | (lsw & 0xFFFF);
}
/*
 * Bitwise rotate a 32-bit number to the left.
 */
function rol(num, cnt)
{
 return (num << cnt) | (num >>> (32 - cnt));
}
/*
 * Convert an 8-bit or 16-bit string to an array of big-endian words
 * In 8-bit function, characters >255 have their hi-byte silently ignored.
 */
function str2binb(str)
{
 var bin = Array();
 var mask = (1 << chrsz) - 1;
 for(var i = 0; i < str.length * chrsz; i += chrsz)
  bin[i>>5] |= (str.charCodeAt(i / chrsz) & mask) << (32 - chrsz - i%32);
 return bin;
}
/*
 * Convert an array of big-endian words to a string
 */
function binb2str(bin)
{
 var str = "";
 var mask = (1 << chrsz) - 1;
 for(var i = 0; i < bin.length * 32; i += chrsz)
  str += String.fromCharCode((bin[i>>5] >>> (32 - chrsz - i%32)) & mask);
 return str;
}
/*
 * Convert an array of big-endian words to a hex string.
 */
function binb2hex(binarray)
{
 var hex_tab = hexcase ? "0123456789ABCDEF" : "0123456789abcdef";
 var str = "";
 for(var i = 0; i < binarray.length * 4; i++)
 {
  str += hex_tab.charAt((binarray[i>>2] >> ((3 - i%4)*8+4)) & 0xF) +
      hex_tab.charAt((binarray[i>>2] >> ((3 - i%4)*8 )) & 0xF);
 }
 return str;
}
/*
 * Convert an array of big-endian words to a base-64 string
 */
function binb2b64(binarray)
{
 var tab = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
 var str = "";
 for(var i = 0; i < binarray.length * 4; i += 3)
 {
  var triplet = (((binarray[i  >> 2] >> 8 * (3 - i  %4)) & 0xFF) << 16)
        | (((binarray[i+1 >> 2] >> 8 * (3 - (i+1)%4)) & 0xFF) << 8 )
        | ((binarray[i+2 >> 2] >> 8 * (3 - (i+2)%4)) & 0xFF);
  for(var j = 0; j < 4; j++)
  {
   if(i * 8 + j * 6 > binarray.length * 32) str += b64pad;
   else str += tab.charAt((triplet >> 6*(3-j)) & 0x3F);
  }
 }
 return str;
}

Javascript 相关文章推荐
犀利的js 函数集合
Jun 11 Javascript
关于取不到由location.href提交而来的上级页面地址的解决办法
Jul 30 Javascript
juqery 学习之三 选择器 层级 基本
Nov 25 Javascript
jquery获取html元素的绝对位置和相对位置的方法
Jun 20 Javascript
JavaScript实现函数返回多个值的方法
Jun 09 Javascript
简单实现兼容各大浏览器的js复制内容到剪切板
Sep 09 Javascript
你不知道的高性能JAVASCRIPT
Jan 18 Javascript
JavaScript获取当前运行脚本文件所在目录的方法
Feb 03 Javascript
Javascript的无new构建实例详解
May 15 Javascript
vue绑定class与行间样式style详解
Aug 16 Javascript
浅谈Vue.js中的v-on(事件处理)
Sep 05 Javascript
npm 下载指定版本的组件方法
May 17 Javascript
Javascript 制作图形验证码实例详解
Dec 22 #Javascript
jquery中用函数来设置css样式
Dec 22 #Javascript
jquery实现(textarea)placeholder自动换行
Dec 22 #Javascript
js数组去重的hash方法
Dec 22 #Javascript
JavaScript生成.xls文件的代码
Dec 22 #Javascript
微信小程序 表单Form实例详解(附源码)
Dec 22 #Javascript
微信小程序 122100版本更新问题解决方案
Dec 22 #Javascript
You might like
PHP获取表单textarea数据中的换行问题
2010/09/10 PHP
php json_encode()函数返回json数据实例代码
2014/10/10 PHP
jquery 双色表格实现代码
2009/12/08 Javascript
js保存当前路径(cookies记录)
2010/12/14 Javascript
查看图片(前进后退)功能实现js代码
2013/04/24 Javascript
javascript为按钮注册回车事件(设置默认按钮)的方法
2015/05/09 Javascript
JQuery中DOM实现事件移除的方法
2015/06/13 Javascript
原生js实现模拟滚动条
2015/06/15 Javascript
值得学习的bootstrap fileinput文件上传工具
2016/11/08 Javascript
JS公共小方法之判断对象是否为domElement的实例
2016/11/25 Javascript
jQuery实现给input绑定回车事件的方法
2017/02/09 Javascript
AngularJS通过ng-Img-Crop实现头像截取的示例
2017/08/17 Javascript
AngularJS中filter的使用实例详解
2017/08/25 Javascript
vue2.0+vue-dplayer实现hls播放的示例
2018/03/02 Javascript
Vue在页面数据渲染完成之后的调用方法
2018/09/11 Javascript
用jQuery将JavaScript对象转换为querystring查询字符串的方法
2018/11/12 jQuery
JS实现给数组对象排序的方法分析
2019/06/24 Javascript
layui 上传文件_批量导入数据UI的方法
2019/09/23 Javascript
vue打包静态资源后显示空白及static文件路径报错的解决
2020/09/02 Javascript
Vue父组件监听子组件生命周期
2020/09/03 Javascript
用Python的pandas框架操作Excel文件中的数据教程
2015/03/31 Python
在python中pandas的series合并方法
2018/11/12 Python
使用python从三个角度解决josephus问题的方法
2020/03/27 Python
Python使用graphviz画流程图过程解析
2020/03/31 Python
用React加CSS3实现微信拆红包动画效果
2017/03/13 HTML / CSS
Html5实现单张、多张图片上传功能
2019/04/28 HTML / CSS
印度尼西亚在线时尚购物网站:ZALORA印尼
2016/08/02 全球购物
python+selenium小米商城红米K40手机自动抢购的示例代码
2021/03/24 Python
水务局局长岗位职责
2013/11/28 职场文书
《骑牛比赛》教后反思
2014/04/22 职场文书
竞选副班长演讲稿
2014/04/24 职场文书
廉政教育的心得体会
2014/09/01 职场文书
公司法定代表人授权委托书
2014/09/29 职场文书
先进工作者主要事迹材料
2015/11/03 职场文书
《老人与海鸥》教学反思
2016/02/16 职场文书
2019开业庆典剪彩仪式主持词!
2019/07/22 职场文书