JavaScript md5
Calculate the md5 hash of a string
1 2 3 4 56 7 8 9 1011 12 13 14 1516 17 18 19 2021 22 23 24 2526 27 28 29 3031 32 33 34 3536 37 38 39 4041 42 43 44 4546 47 48 49 5051 52 53 54 5556 57 58 59 6061 62 63 64 6566 67 68 69 7071 72 73 74 7576 77 78 79 8081 82 83 84 8586 87 88 89 9091 92 93 94 9596 97 98 99 100101 102 103 104 105106 107 108 109 110111 112 113 114 115116 117 118 119 120121 122 123 124 125126 127 128 129 130131 132 133 134 135136 137 138 139 140141 142 143 144 145146 147 148 149 150151 152 153 154 155156 157 158 159 160161 162 163 164 165166 167 168 169 170171 172 173 174 175176 177 178 179 180181 182 183 184 185186 187 188 189 190191 192 193 194 195196 197 198 199 200201 202 203 204 205206 207 208 209 210211 212 213 214 | function md5 (str) { // Calculate the md5 hash of a string // // version: 1109.2015 // discuss at: http://phpjs.org/functions/md5 // + original by: Webtoolkit.info (http://www.webtoolkit.info/) // + namespaced by: Michael White (http://getsprink.com) // + tweaked by: Jack // + improved by: Kevin van Zonneveld (http://kevin.vanzonneveld.net) // + input by: Brett Zamir (http://brett-zamir.me) // + bugfixed by: Kevin van Zonneveld (http://kevin.vanzonneveld.net) // - depends on: utf8_encode // * example 1: md5('Kevin van Zonneveld'); // * returns 1: '6e658d4bfcb59cc13f96c14450ac40b9' var xl; var rotateLeft = function (lValue, iShiftBits) { return (lValue << iShiftBits) | (lValue >>> (32 - iShiftBits)); }; var addUnsigned = function (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); } }; var _F = function (x, y, z) { return (x & y) | ((~x) & z); }; var _G = function (x, y, z) { return (x & z) | (y & (~z)); }; var _H = function (x, y, z) { return (x ^ y ^ z); }; var _I = function (x, y, z) { return (y ^ (x | (~z))); }; var _FF = function (a, b, c, d, x, s, ac) { a = addUnsigned(a, addUnsigned(addUnsigned(_F(b, c, d), x), ac)); return addUnsigned(rotateLeft(a, s), b); }; var _GG = function (a, b, c, d, x, s, ac) { a = addUnsigned(a, addUnsigned(addUnsigned(_G(b, c, d), x), ac)); return addUnsigned(rotateLeft(a, s), b); }; var _HH = function (a, b, c, d, x, s, ac) { a = addUnsigned(a, addUnsigned(addUnsigned(_H(b, c, d), x), ac)); return addUnsigned(rotateLeft(a, s), b); }; var _II = function (a, b, c, d, x, s, ac) { a = addUnsigned(a, addUnsigned(addUnsigned(_I(b, c, d), x), ac)); return addUnsigned(rotateLeft(a, s), b); }; var convertToWordArray = function (str) { var lWordCount; var lMessageLength = str.length; var lNumberOfWords_temp1 = lMessageLength + 8; var lNumberOfWords_temp2 = (lNumberOfWords_temp1 - (lNumberOfWords_temp1 % 64)) / 64; var lNumberOfWords = (lNumberOfWords_temp2 + 1) * 16; var lWordArray = new Array(lNumberOfWords - 1); var lBytePosition = 0; var lByteCount = 0; while (lByteCount < lMessageLength) { lWordCount = (lByteCount - (lByteCount % 4)) / 4; lBytePosition = (lByteCount % 4) * 8; lWordArray[lWordCount] = (lWordArray[lWordCount] | (str.charCodeAt(lByteCount) << lBytePosition)); lByteCount++; } lWordCount = (lByteCount - (lByteCount % 4)) / 4; lBytePosition = (lByteCount % 4) * 8; lWordArray[lWordCount] = lWordArray[lWordCount] | (0x80 << lBytePosition); lWordArray[lNumberOfWords - 2] = lMessageLength << 3; lWordArray[lNumberOfWords - 1] = lMessageLength >>> 29; return lWordArray; }; var wordToHex = function (lValue) { var wordToHexValue = "", wordToHexValue_temp = "", lByte, lCount; for (lCount = 0; lCount <= 3; lCount++) { lByte = (lValue >>> (lCount * 8)) & 255; wordToHexValue_temp = "0" + lByte.toString(16); wordToHexValue = wordToHexValue + wordToHexValue_temp.substr(wordToHexValue_temp.length - 2, 2); } return wordToHexValue; }; var x = [], k, AA, BB, CC, DD, a, b, c, d, S11 = 7, S12 = 12, S13 = 17, S14 = 22, S21 = 5, S22 = 9, S23 = 14, S24 = 20, S31 = 4, S32 = 11, S33 = 16, S34 = 23, S41 = 6, S42 = 10, S43 = 15, S44 = 21; str = this.utf8_encode(str); x = convertToWordArray(str); a = 0x67452301; b = 0xEFCDAB89; c = 0x98BADCFE; d = 0x10325476; xl = x.length; for (k = 0; k < xl; k += 16) { AA = a; BB = b; CC = c; DD = d; a = _FF(a, b, c, d, x[k + 0], S11, 0xD76AA478); d = _FF(d, a, b, c, x[k + 1], S12, 0xE8C7B756); c = _FF(c, d, a, b, x[k + 2], S13, 0x242070DB); b = _FF(b, c, d, a, x[k + 3], S14, 0xC1BDCEEE); a = _FF(a, b, c, d, x[k + 4], S11, 0xF57C0FAF); d = _FF(d, a, b, c, x[k + 5], S12, 0x4787C62A); c = _FF(c, d, a, b, x[k + 6], S13, 0xA8304613); b = _FF(b, c, d, a, x[k + 7], S14, 0xFD469501); a = _FF(a, b, c, d, x[k + 8], S11, 0x698098D8); d = _FF(d, a, b, c, x[k + 9], S12, 0x8B44F7AF); c = _FF(c, d, a, b, x[k + 10], S13, 0xFFFF5BB1); b = _FF(b, c, d, a, x[k + 11], S14, 0x895CD7BE); a = _FF(a, b, c, d, x[k + 12], S11, 0x6B901122); d = _FF(d, a, b, c, x[k + 13], S12, 0xFD987193); c = _FF(c, d, a, b, x[k + 14], S13, 0xA679438E); b = _FF(b, c, d, a, x[k + 15], S14, 0x49B40821); a = _GG(a, b, c, d, x[k + 1], S21, 0xF61E2562); d = _GG(d, a, b, c, x[k + 6], S22, 0xC040B340); c = _GG(c, d, a, b, x[k + 11], S23, 0x265E5A51); b = _GG(b, c, d, a, x[k + 0], S24, 0xE9B6C7AA); a = _GG(a, b, c, d, x[k + 5], S21, 0xD62F105D); d = _GG(d, a, b, c, x[k + 10], S22, 0x2441453); c = _GG(c, d, a, b, x[k + 15], S23, 0xD8A1E681); b = _GG(b, c, d, a, x[k + 4], S24, 0xE7D3FBC8); a = _GG(a, b, c, d, x[k + 9], S21, 0x21E1CDE6); d = _GG(d, a, b, c, x[k + 14], S22, 0xC33707D6); c = _GG(c, d, a, b, x[k + 3], S23, 0xF4D50D87); b = _GG(b, c, d, a, x[k + 8], S24, 0x455A14ED); a = _GG(a, b, c, d, x[k + 13], S21, 0xA9E3E905); d = _GG(d, a, b, c, x[k + 2], S22, 0xFCEFA3F8); c = _GG(c, d, a, b, x[k + 7], S23, 0x676F02D9); b = _GG(b, c, d, a, x[k + 12], S24, 0x8D2A4C8A); a = _HH(a, b, c, d, x[k + 5], S31, 0xFFFA3942); d = _HH(d, a, b, c, x[k + 8], S32, 0x8771F681); c = _HH(c, d, a, b, x[k + 11], S33, 0x6D9D6122); b = _HH(b, c, d, a, x[k + 14], S34, 0xFDE5380C); a = _HH(a, b, c, d, x[k + 1], S31, 0xA4BEEA44); d = _HH(d, a, b, c, x[k + 4], S32, 0x4BDECFA9); c = _HH(c, d, a, b, x[k + 7], S33, 0xF6BB4B60); b = _HH(b, c, d, a, x[k + 10], S34, 0xBEBFBC70); a = _HH(a, b, c, d, x[k + 13], S31, 0x289B7EC6); d = _HH(d, a, b, c, x[k + 0], S32, 0xEAA127FA); c = _HH(c, d, a, b, x[k + 3], S33, 0xD4EF3085); b = _HH(b, c, d, a, x[k + 6], S34, 0x4881D05); a = _HH(a, b, c, d, x[k + 9], S31, 0xD9D4D039); d = _HH(d, a, b, c, x[k + 12], S32, 0xE6DB99E5); c = _HH(c, d, a, b, x[k + 15], S33, 0x1FA27CF8); b = _HH(b, c, d, a, x[k + 2], S34, 0xC4AC5665); a = _II(a, b, c, d, x[k + 0], S41, 0xF4292244); d = _II(d, a, b, c, x[k + 7], S42, 0x432AFF97); c = _II(c, d, a, b, x[k + 14], S43, 0xAB9423A7); b = _II(b, c, d, a, x[k + 5], S44, 0xFC93A039); a = _II(a, b, c, d, x[k + 12], S41, 0x655B59C3); d = _II(d, a, b, c, x[k + 3], S42, 0x8F0CCC92); c = _II(c, d, a, b, x[k + 10], S43, 0xFFEFF47D); b = _II(b, c, d, a, x[k + 1], S44, 0x85845DD1); a = _II(a, b, c, d, x[k + 8], S41, 0x6FA87E4F); d = _II(d, a, b, c, x[k + 15], S42, 0xFE2CE6E0); c = _II(c, d, a, b, x[k + 6], S43, 0xA3014314); b = _II(b, c, d, a, x[k + 13], S44, 0x4E0811A1); a = _II(a, b, c, d, x[k + 4], S41, 0xF7537E82); d = _II(d, a, b, c, x[k + 11], S42, 0xBD3AF235); c = _II(c, d, a, b, x[k + 2], S43, 0x2AD7D2BB); b = _II(b, c, d, a, x[k + 9], S44, 0xEB86D391); a = addUnsigned(a, AA); b = addUnsigned(b, BB); c = addUnsigned(c, CC); d = addUnsigned(d, DD); } var temp = wordToHex(a) + wordToHex(b) + wordToHex(c) + wordToHex(d); return temp.toLowerCase(); } |
Examples
Running
1 | md5('Kevin van Zonneveld'); |
Should return
1 | '6e658d4bfcb59cc13f96c14450ac40b9' |
Dependencies
In order to use this function, you also need:
Open syntax issues
php.js uses JsLint to help us keep our code consistent and prevent some common bugs.
Eventually we want all code to pass or at least take into consideration most fixes suggested by JsLint, following this JsLint configuration we’ve decided on.
Authors
Thanks to the following developers, you get to have md5 goodness in JavaScript.
Brett Zamir
22 Dec '10 
@Rob: Hi Rob, thanks for your input. Someone claimed that unlike ours, http://pajhome.org.uk/crypt/md5/ (under a BSD license) works correctly with non-ASCII characters. Do you have the inclination to test that for us? I'd hate to make patches if we should be working on another code base instead.
Rob
20 Dec '10
There's a minor bug in convertToWordArray() that causes the word array input to the MD5 function to have null values. JavaScript does the right thing anyway, but it may not be desired behavior. Here's one fix:
var convertToWordArray = function (str) {
var lWordCount;
var lMessageLength = str.length;
var lNumberOfWords_temp1=lMessageLength + 8;
var lNumberOfWords_temp2=(lNumberOfWords_temp1-(lNumberOfWords_temp1 % 64))/64;
var lNumberOfWords = (lNumberOfWords_temp2+1)*16;
var lWordArray=new Array(lNumberOfWords-1);
/* Initialize lWordArray */
var i = lWordArray.length; while ( i-- ) { lWordArray[i] = 0; }
var lBytePosition = 0;
var lByteCount = 0;
while ( lByteCount < lMessageLength ) {
lWordCount = (lByteCount-(lByteCount % 4))/4;
lBytePosition = (lByteCount % 4)*8;
lWordArray[lWordCount] = (lWordArray[lWordCount] | (str.charCodeAt(lByteCount)<>>29;
return lWordArray;
};
Also, addUnsigned can be shortened up a lot if you're willing to bet on JavaScript not changing its behavior. Since JavaScript currently has 53 bits of precision for its number type, you can change addUnsigned to:
var addUnsigned = function (lX,lY) {
var x = lX + lY;
return x < 0xFFFFFFFF ? x : x - 0x100000000;
};
Since addUnsigned is an innermost function, that might or might not be a desirable change. I've tested it with known MD5 values on several browsers and they've all handled it correctly.
pilus
10 Jun '09
Sorry if I sound kinda lame coz I am, but what about the second argument to php's md5() that returns raw binary data ? how could I do that in JS ? Anyone know ?
Rob
7 Jun '09
Should the dependency be used even if the page encoding is already set to utf-8 through the Content-Type meta tag?
Kevin van Zonneveld
7 Feb '08
@ Evil Angelica: Guess I haven't.. Do you have any idea what hacking is?
Philip Andrew
30 Jan '08
This is a good idea if you want to combine it with Aptana JAXER then it makes JAXER more like PHP.
http://www.aptana.com/jaxer/
Kevin van Zonneveld
29 Jan '08
@ Eric: Interesting thought.
But that would mean maintaining multiple versions of the same function, just to be able to do a 'solid' benchmark (by eliminating as many variables such as platform, browser, processor, etc. between your workstation and mine).
And storing and maintaining different versions for the sole purpose of a micro benchmark would slow the project down in this phase, I think.
So for now, I think I'll leave it up to the community to suggest speed improvements instead.
But thanks for your input, very much appreciated!
Eric
28 Jan '08
I think it'd be fantastic to see these functions coupled with some performance measurements, both so we can see areas need optimization and to help people understand which operations are unrealistically expensive.
Kevin van Zonneveld
18 Jan '08
@ Ates Goral: I've added it to my queue. You can check out RSS to see when it gets added here. Thank you for that masterpiece!
Ates Goral
18 Jan '08
A while back, I had published a function called phpSerialize() (that does what the PHP serialize() function does) at http://magnetiq.com/2006/07/30/php-style-serialization-of-javascript-objects/
Here's the code copied here:
[CODE="Javascript"]
/* Returns the class name of the argument or undefined if
it's not a valid JavaScript object.
*/
function getObjectClass(obj)
{
if (obj && obj.constructor && obj.constructor.toString)
{
var arr = obj.constructor.toString().match(
/function\s*(\w+)/);
if (arr && arr.length == 2)
{
return arr[1];
}
}
return undefined;
}
/* Serializes the given argument, PHP-style.
The type mapping is as follows:
JavaScript Type PHP Type
--------------- --------
Number Integer or Decimal
String String
Boolean Boolean
Array Array
Object Object
undefined Null
The special JavaScript object null also becomes PHP Null.
This function may not handle associative arrays or array
objects with additional properties well.
*/
function phpSerialize(val)
{
switch (typeof(val))
{
case "number":
return (Math.floor(val) == val ? "i" : "d") + ":" +
val + ";";
case "string":
return "s:" + val.length + ":\"" + val + "\";";
case "boolean":
return "b:" + (val ? "1" : "0") + ";";
case "object":
if (val == null)
{
return "N;";
}
else if ("length" in val)
{
var idxobj = { idx: -1 };
return "a:" + val.length + ":{" + val.map(
function (item)
{
this.idx++;
var ser = phpSerialize(item);
return ser ?
phpSerialize(this.idx) + ser :
false;
}, idxobj).filter(
function (item)
{
return item;
}).join("") + "}";
}
else
{
var class_name = getObjectClass(val);
if (class_name == undefined)
{
return false;
}
var props = new Array();
for (var prop in val)
{
var ser = phpSerialize(val[prop]);
if (ser)
{
props.push(phpSerialize(prop) + ser);
}
}
return "O:" + class_name.length + ":\"" +
class_name + "\":" + props.length + ":{" +
props.join("") + "}";
}
case "undefined":
return "N;";
}
return false;
}
[/CODE]
Steve
22 Jun '11