mirror of
https://mau.dev/maunium/synapse.git
synced 2024-12-21 10:14:07 +01:00
279 lines
10 KiB
JavaScript
279 lines
10 KiB
JavaScript
/*
|
|
* 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.
|
|
*/
|
|
|
|
var MD5 = (function () {
|
|
/*
|
|
* 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 */
|
|
|
|
/*
|
|
* Add integers, wrapping at 2^32. This uses 16-bit operations internally
|
|
* to work around bugs in some JS interpreters.
|
|
*/
|
|
var safe_add = function (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.
|
|
*/
|
|
var bit_rol = function (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.
|
|
*/
|
|
var str2binl = function (str) {
|
|
var bin = [];
|
|
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
|
|
*/
|
|
var binl2str = function (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.
|
|
*/
|
|
var binl2hex = function (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
|
|
*/
|
|
var binl2b64 = function (binarray) {
|
|
var tab = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
|
|
var str = "";
|
|
var triplet, j;
|
|
for(var i = 0; i < binarray.length * 4; i += 3)
|
|
{
|
|
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(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;
|
|
};
|
|
|
|
/*
|
|
* These functions implement the four basic operations the algorithm uses.
|
|
*/
|
|
var md5_cmn = function (q, a, b, x, s, t) {
|
|
return safe_add(bit_rol(safe_add(safe_add(a, q),safe_add(x, t)), s),b);
|
|
};
|
|
|
|
var md5_ff = function (a, b, c, d, x, s, t) {
|
|
return md5_cmn((b & c) | ((~b) & d), a, b, x, s, t);
|
|
};
|
|
|
|
var md5_gg = function (a, b, c, d, x, s, t) {
|
|
return md5_cmn((b & d) | (c & (~d)), a, b, x, s, t);
|
|
};
|
|
|
|
var md5_hh = function (a, b, c, d, x, s, t) {
|
|
return md5_cmn(b ^ c ^ d, a, b, x, s, t);
|
|
};
|
|
|
|
var md5_ii = function (a, b, c, d, x, s, t) {
|
|
return md5_cmn(c ^ (b | (~d)), a, b, x, s, t);
|
|
};
|
|
|
|
/*
|
|
* Calculate the MD5 of an array of little-endian words, and a bit length
|
|
*/
|
|
var core_md5 = function (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;
|
|
|
|
var olda, oldb, oldc, oldd;
|
|
for (var i = 0; i < x.length; i += 16)
|
|
{
|
|
olda = a;
|
|
oldb = b;
|
|
oldc = c;
|
|
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 [a, b, c, d];
|
|
};
|
|
|
|
|
|
/*
|
|
* Calculate the HMAC-MD5, of a key and some data
|
|
*/
|
|
var core_hmac_md5 = function (key, data) {
|
|
var bkey = str2binl(key);
|
|
if(bkey.length > 16) { bkey = core_md5(bkey, key.length * chrsz); }
|
|
|
|
var ipad = new Array(16), opad = new 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);
|
|
};
|
|
|
|
var obj = {
|
|
/*
|
|
* These are the functions you'll usually want to call.
|
|
* They take string arguments and return either hex or base-64 encoded
|
|
* strings.
|
|
*/
|
|
hexdigest: function (s) {
|
|
return binl2hex(core_md5(str2binl(s), s.length * chrsz));
|
|
},
|
|
|
|
b64digest: function (s) {
|
|
return binl2b64(core_md5(str2binl(s), s.length * chrsz));
|
|
},
|
|
|
|
hash: function (s) {
|
|
return binl2str(core_md5(str2binl(s), s.length * chrsz));
|
|
},
|
|
|
|
hmac_hexdigest: function (key, data) {
|
|
return binl2hex(core_hmac_md5(key, data));
|
|
},
|
|
|
|
hmac_b64digest: function (key, data) {
|
|
return binl2b64(core_hmac_md5(key, data));
|
|
},
|
|
|
|
hmac_hash: function (key, data) {
|
|
return binl2str(core_hmac_md5(key, data));
|
|
},
|
|
|
|
/*
|
|
* Perform a simple self-test to see if the VM is working
|
|
*/
|
|
test: function () {
|
|
return MD5.hexdigest("abc") === "900150983cd24fb0d6963f7d28e17f72";
|
|
}
|
|
};
|
|
|
|
return obj;
|
|
})();
|
|
|
|
// Nodify
|
|
exports.MD5 = MD5;
|