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FONCTION MD5
Information sur la source
Description
Une fonction qui calcule le md5 d'une chaîne de caractères avec en option le résultat en majuscule et le format de la chaîne (ansi ou unicode).
Source
- /**
- * Message Digest 5 hash code function
- *
- * @author Dri
- * @version 1.0
- *
- * @param String message
- * @param bool upper_case
- * @param bool unicode
- */
-
- function md5(message, upper_case, unicode) {
-
- //misc functions
-
- var add = function(x, y) {
- var lsw = (x & 0xFFFF) + (y & 0xFFFF);
- var msw = (x >>> 16) + (y >>> 16) + (lsw >>> 16);
- return (msw << 16) | (lsw & 0xFFFF);
- }
-
- var rol = function(x, y){
- return (x << y) | (x >>> (32 - y));
- }
-
- var hex = function(abcd) {
- var hex_string = "";
- var hex_buffer = "0123456789abcdef";
-
- if(upper_case) hex_buffer = hex_buffer.toUpperCase();
-
- for(var i = 0; i < abcd.length; i++) for(var j = 0; j < 32; j += 8)
- hex_string += hex_buffer.charAt( (abcd[i] >> (j+4)) & 0xF) + hex_buffer.charAt( (abcd[i] >> j) & 0xF);
-
- return hex_string;
- }
-
- //md5 functions
-
- var xx = function(q, a, b, x, s, ac) {
- return add(rol(add(add(a, q), add(x, ac)), s),b);
- }
-
- var ff = function(a, b, c, d, x, s, ac) {
- return xx((b & c) | ((~b) & d), a, b, x, s, ac);
- }
-
- var gg = function(a, b, c, d, x, s, ac) {
- return xx((b & d) | (c & (~d)), a, b, x, s, ac);
- }
-
- var hh = function(a, b, c, d, x, s, ac) {
- return xx(b ^ c ^ d, a, b, x, s, ac);
- }
-
- var ii = function(a, b, c, d, x, s, ac) {
- return xx(c ^ (b | (~d)), a, b, x, s, ac);
- }
-
- //message digest buffer
-
- message = message.toString();
-
- var i;
- var buffer = [];
- var char_size = unicode ? 16 : 8;
- var char_mask = (1 << char_size) - 1;
-
- for(i = 0; i < message.length * char_size; i += char_size)
- buffer[i >> 5] |= (message.charCodeAt(i / char_size) & char_mask) << (i & 0x1F);
-
- //message digest padding
-
- buffer[i >> 5] |= 0x80 << (i & 0x1F);
- buffer[(((i + 64) >>> 5) & ~0xF) + 14] = i;
-
- //message digest loop
-
- var a = 0x67452301;
- var b = 0xEFCDAB89;
- var c = 0x98BADCFE;
- var d = 0x10325476;
-
- for(i = 0; i < buffer.length; i += 16) {
- var temp_a = a;
- var temp_b = b;
- var temp_c = c;
- var temp_d = d;
-
- a = ff(a, b, c, d, buffer[i+ 0], 7, 0xD76AA478);
- d = ff(d, a, b, c, buffer[i+ 1], 12, 0xE8C7B756);
- c = ff(c, d, a, b, buffer[i+ 2], 17, 0x242070DB);
- b = ff(b, c, d, a, buffer[i+ 3], 22, 0xC1BDCEEE);
- a = ff(a, b, c, d, buffer[i+ 4], 7, 0xF57C0FAF);
- d = ff(d, a, b, c, buffer[i+ 5], 12, 0x4787C62A);
- c = ff(c, d, a, b, buffer[i+ 6], 17, 0xA8304613);
- b = ff(b, c, d, a, buffer[i+ 7], 22, 0xFD469501);
- a = ff(a, b, c, d, buffer[i+ 8], 7, 0x698098D8);
- d = ff(d, a, b, c, buffer[i+ 9], 12, 0x8B44F7AF);
- c = ff(c, d, a, b, buffer[i+10], 17, 0xFFFF5BB1);
- b = ff(b, c, d, a, buffer[i+11], 22, 0x895CD7BE);
- a = ff(a, b, c, d, buffer[i+12], 7, 0x6B901122);
- d = ff(d, a, b, c, buffer[i+13], 12, 0xFD987193);
- c = ff(c, d, a, b, buffer[i+14], 17, 0xA679438E);
- b = ff(b, c, d, a, buffer[i+15], 22, 0x49B40821);
-
- a = gg(a, b, c, d, buffer[i+ 1], 5, 0xF61E2562);
- d = gg(d, a, b, c, buffer[i+ 6], 9, 0xC040B340);
- c = gg(c, d, a, b, buffer[i+11], 14, 0x265E5A51);
- b = gg(b, c, d, a, buffer[i+ 0], 20, 0xE9B6C7AA);
- a = gg(a, b, c, d, buffer[i+ 5], 5, 0xD62F105D);
- d = gg(d, a, b, c, buffer[i+10], 9, 0x02441453);
- c = gg(c, d, a, b, buffer[i+15], 14, 0xD8A1E681);
- b = gg(b, c, d, a, buffer[i+ 4], 20, 0xE7D3FBC8);
- a = gg(a, b, c, d, buffer[i+ 9], 5, 0x21E1CDE6);
- d = gg(d, a, b, c, buffer[i+14], 9, 0xC33707D6);
- c = gg(c, d, a, b, buffer[i+ 3], 14, 0xF4D50D87);
- b = gg(b, c, d, a, buffer[i+ 8], 20, 0x455A14ED);
- a = gg(a, b, c, d, buffer[i+13], 5, 0xA9E3E905);
- d = gg(d, a, b, c, buffer[i+ 2], 9, 0xFCEFA3F8);
- c = gg(c, d, a, b, buffer[i+ 7], 14, 0x676F02D9);
- b = gg(b, c, d, a, buffer[i+12], 20, 0x8D2A4C8A);
-
- a = hh(a, b, c, d, buffer[i+ 5], 4, 0xFFFA3942);
- d = hh(d, a, b, c, buffer[i+ 8], 11, 0x8771F681);
- c = hh(c, d, a, b, buffer[i+11], 16, 0x6D9D6122);
- b = hh(b, c, d, a, buffer[i+14], 23, 0xFDE5380C);
- a = hh(a, b, c, d, buffer[i+ 1], 4, 0xA4BEEA44);
- d = hh(d, a, b, c, buffer[i+ 4], 11, 0x4BDECFA9);
- c = hh(c, d, a, b, buffer[i+ 7], 16, 0xF6BB4B60);
- b = hh(b, c, d, a, buffer[i+10], 23, 0xBEBFBC70);
- a = hh(a, b, c, d, buffer[i+13], 4, 0x289B7EC6);
- d = hh(d, a, b, c, buffer[i+ 0], 11, 0xEAA127FA);
- c = hh(c, d, a, b, buffer[i+ 3], 16, 0xD4EF3085);
- b = hh(b, c, d, a, buffer[i+ 6], 23, 0x04881D05);
- a = hh(a, b, c, d, buffer[i+ 9], 4, 0xD9D4D039);
- d = hh(d, a, b, c, buffer[i+12], 11, 0xE6DB99E5);
- c = hh(c, d, a, b, buffer[i+15], 16, 0x1FA27CF8);
- b = hh(b, c, d, a, buffer[i+ 2], 23, 0xC4AC5665);
-
- a = ii(a, b, c, d, buffer[i+ 0], 6, 0xF4292244);
- d = ii(d, a, b, c, buffer[i+ 7], 10, 0x432AFF97);
- c = ii(c, d, a, b, buffer[i+14], 15, 0xAB9423A7);
- b = ii(b, c, d, a, buffer[i+ 5], 21, 0xFC93A039);
- a = ii(a, b, c, d, buffer[i+12], 6, 0x655B59C3);
- d = ii(d, a, b, c, buffer[i+ 3], 10, 0x8F0CCC92);
- c = ii(c, d, a, b, buffer[i+10], 15, 0xFFEFF47D);
- b = ii(b, c, d, a, buffer[i+ 1], 21, 0x85845DD1);
- a = ii(a, b, c, d, buffer[i+ 8], 6, 0x6FA87E4F);
- d = ii(d, a, b, c, buffer[i+15], 10, 0xFE2CE6E0);
- c = ii(c, d, a, b, buffer[i+ 6], 15, 0xA3014314);
- b = ii(b, c, d, a, buffer[i+13], 21, 0x4E0811A1);
- a = ii(a, b, c, d, buffer[i+ 4], 6, 0xF7537E82);
- d = ii(d, a, b, c, buffer[i+11], 10, 0xBD3AF235);
- c = ii(c, d, a, b, buffer[i+ 2], 15, 0x2AD7D2BB);
- b = ii(b, c, d, a, buffer[i+ 9], 21, 0xEB86D391);
-
- a = add(a, temp_a);
- b = add(b, temp_b);
- c = add(c, temp_c);
- d = add(d, temp_d);
- }
-
- return hex( [a, b, c, d] );
- }
/**
* Message Digest 5 hash code function
*
* @author Dri
* @version 1.0
*
* @param String message
* @param bool upper_case
* @param bool unicode
*/
function md5(message, upper_case, unicode) {
//misc functions
var add = function(x, y) {
var lsw = (x & 0xFFFF) + (y & 0xFFFF);
var msw = (x >>> 16) + (y >>> 16) + (lsw >>> 16);
return (msw << 16) | (lsw & 0xFFFF);
}
var rol = function(x, y){
return (x << y) | (x >>> (32 - y));
}
var hex = function(abcd) {
var hex_string = "";
var hex_buffer = "0123456789abcdef";
if(upper_case) hex_buffer = hex_buffer.toUpperCase();
for(var i = 0; i < abcd.length; i++) for(var j = 0; j < 32; j += 8)
hex_string += hex_buffer.charAt( (abcd[i] >> (j+4)) & 0xF) + hex_buffer.charAt( (abcd[i] >> j) & 0xF);
return hex_string;
}
//md5 functions
var xx = function(q, a, b, x, s, ac) {
return add(rol(add(add(a, q), add(x, ac)), s),b);
}
var ff = function(a, b, c, d, x, s, ac) {
return xx((b & c) | ((~b) & d), a, b, x, s, ac);
}
var gg = function(a, b, c, d, x, s, ac) {
return xx((b & d) | (c & (~d)), a, b, x, s, ac);
}
var hh = function(a, b, c, d, x, s, ac) {
return xx(b ^ c ^ d, a, b, x, s, ac);
}
var ii = function(a, b, c, d, x, s, ac) {
return xx(c ^ (b | (~d)), a, b, x, s, ac);
}
//message digest buffer
message = message.toString();
var i;
var buffer = [];
var char_size = unicode ? 16 : 8;
var char_mask = (1 << char_size) - 1;
for(i = 0; i < message.length * char_size; i += char_size)
buffer[i >> 5] |= (message.charCodeAt(i / char_size) & char_mask) << (i & 0x1F);
//message digest padding
buffer[i >> 5] |= 0x80 << (i & 0x1F);
buffer[(((i + 64) >>> 5) & ~0xF) + 14] = i;
//message digest loop
var a = 0x67452301;
var b = 0xEFCDAB89;
var c = 0x98BADCFE;
var d = 0x10325476;
for(i = 0; i < buffer.length; i += 16) {
var temp_a = a;
var temp_b = b;
var temp_c = c;
var temp_d = d;
a = ff(a, b, c, d, buffer[i+ 0], 7, 0xD76AA478);
d = ff(d, a, b, c, buffer[i+ 1], 12, 0xE8C7B756);
c = ff(c, d, a, b, buffer[i+ 2], 17, 0x242070DB);
b = ff(b, c, d, a, buffer[i+ 3], 22, 0xC1BDCEEE);
a = ff(a, b, c, d, buffer[i+ 4], 7, 0xF57C0FAF);
d = ff(d, a, b, c, buffer[i+ 5], 12, 0x4787C62A);
c = ff(c, d, a, b, buffer[i+ 6], 17, 0xA8304613);
b = ff(b, c, d, a, buffer[i+ 7], 22, 0xFD469501);
a = ff(a, b, c, d, buffer[i+ 8], 7, 0x698098D8);
d = ff(d, a, b, c, buffer[i+ 9], 12, 0x8B44F7AF);
c = ff(c, d, a, b, buffer[i+10], 17, 0xFFFF5BB1);
b = ff(b, c, d, a, buffer[i+11], 22, 0x895CD7BE);
a = ff(a, b, c, d, buffer[i+12], 7, 0x6B901122);
d = ff(d, a, b, c, buffer[i+13], 12, 0xFD987193);
c = ff(c, d, a, b, buffer[i+14], 17, 0xA679438E);
b = ff(b, c, d, a, buffer[i+15], 22, 0x49B40821);
a = gg(a, b, c, d, buffer[i+ 1], 5, 0xF61E2562);
d = gg(d, a, b, c, buffer[i+ 6], 9, 0xC040B340);
c = gg(c, d, a, b, buffer[i+11], 14, 0x265E5A51);
b = gg(b, c, d, a, buffer[i+ 0], 20, 0xE9B6C7AA);
a = gg(a, b, c, d, buffer[i+ 5], 5, 0xD62F105D);
d = gg(d, a, b, c, buffer[i+10], 9, 0x02441453);
c = gg(c, d, a, b, buffer[i+15], 14, 0xD8A1E681);
b = gg(b, c, d, a, buffer[i+ 4], 20, 0xE7D3FBC8);
a = gg(a, b, c, d, buffer[i+ 9], 5, 0x21E1CDE6);
d = gg(d, a, b, c, buffer[i+14], 9, 0xC33707D6);
c = gg(c, d, a, b, buffer[i+ 3], 14, 0xF4D50D87);
b = gg(b, c, d, a, buffer[i+ 8], 20, 0x455A14ED);
a = gg(a, b, c, d, buffer[i+13], 5, 0xA9E3E905);
d = gg(d, a, b, c, buffer[i+ 2], 9, 0xFCEFA3F8);
c = gg(c, d, a, b, buffer[i+ 7], 14, 0x676F02D9);
b = gg(b, c, d, a, buffer[i+12], 20, 0x8D2A4C8A);
a = hh(a, b, c, d, buffer[i+ 5], 4, 0xFFFA3942);
d = hh(d, a, b, c, buffer[i+ 8], 11, 0x8771F681);
c = hh(c, d, a, b, buffer[i+11], 16, 0x6D9D6122);
b = hh(b, c, d, a, buffer[i+14], 23, 0xFDE5380C);
a = hh(a, b, c, d, buffer[i+ 1], 4, 0xA4BEEA44);
d = hh(d, a, b, c, buffer[i+ 4], 11, 0x4BDECFA9);
c = hh(c, d, a, b, buffer[i+ 7], 16, 0xF6BB4B60);
b = hh(b, c, d, a, buffer[i+10], 23, 0xBEBFBC70);
a = hh(a, b, c, d, buffer[i+13], 4, 0x289B7EC6);
d = hh(d, a, b, c, buffer[i+ 0], 11, 0xEAA127FA);
c = hh(c, d, a, b, buffer[i+ 3], 16, 0xD4EF3085);
b = hh(b, c, d, a, buffer[i+ 6], 23, 0x04881D05);
a = hh(a, b, c, d, buffer[i+ 9], 4, 0xD9D4D039);
d = hh(d, a, b, c, buffer[i+12], 11, 0xE6DB99E5);
c = hh(c, d, a, b, buffer[i+15], 16, 0x1FA27CF8);
b = hh(b, c, d, a, buffer[i+ 2], 23, 0xC4AC5665);
a = ii(a, b, c, d, buffer[i+ 0], 6, 0xF4292244);
d = ii(d, a, b, c, buffer[i+ 7], 10, 0x432AFF97);
c = ii(c, d, a, b, buffer[i+14], 15, 0xAB9423A7);
b = ii(b, c, d, a, buffer[i+ 5], 21, 0xFC93A039);
a = ii(a, b, c, d, buffer[i+12], 6, 0x655B59C3);
d = ii(d, a, b, c, buffer[i+ 3], 10, 0x8F0CCC92);
c = ii(c, d, a, b, buffer[i+10], 15, 0xFFEFF47D);
b = ii(b, c, d, a, buffer[i+ 1], 21, 0x85845DD1);
a = ii(a, b, c, d, buffer[i+ 8], 6, 0x6FA87E4F);
d = ii(d, a, b, c, buffer[i+15], 10, 0xFE2CE6E0);
c = ii(c, d, a, b, buffer[i+ 6], 15, 0xA3014314);
b = ii(b, c, d, a, buffer[i+13], 21, 0x4E0811A1);
a = ii(a, b, c, d, buffer[i+ 4], 6, 0xF7537E82);
d = ii(d, a, b, c, buffer[i+11], 10, 0xBD3AF235);
c = ii(c, d, a, b, buffer[i+ 2], 15, 0x2AD7D2BB);
b = ii(b, c, d, a, buffer[i+ 9], 21, 0xEB86D391);
a = add(a, temp_a);
b = add(b, temp_b);
c = add(c, temp_c);
d = add(d, temp_d);
}
return hex( [a, b, c, d] );
}
Conclusion
Testé uniquement sous windows 98 et XP avec IE6, Mozilla, FireFox et Opera 9. Pour utiliser la fonction voila quelques exemples :
alert( md5("md5") ); alert( md5("md5", true) );
la même chose en unicode
alert( md5("md5", false, true) ); alert( md5("md5", true, true) );
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