42 lines
1.2 KiB
JavaScript
42 lines
1.2 KiB
JavaScript
|
/*
|
||
|
|
Copyright (C) 2013 Grégory Soutadé
|
||
|
|
|
||
|
|
This file is part of gPass.
|
||
|
|
|
||
|
|
gPass is free software: you can redistribute it and/or modify
|
||
|
|
it under the terms of the GNU General Public License as published by
|
||
|
|
the Free Software Foundation, either version 3 of the License, or
|
||
|
|
(at your option) any later version.
|
||
|
|
|
||
|
|
gPass is distributed in the hope that it will be useful,
|
||
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
|
|
GNU General Public License for more details.
|
||
|
|
|
||
|
|
You should have received a copy of the GNU General Public License
|
||
|
|
along with gPass. If not, see <http://www.gnu.org/licenses/>.
|
||
|
|
*/
|
||
|
|
|
||
|
|
var sha256 = require("jssha256").sha256;
|
||
|
|
|
||
|
|
exports.hmac = {
|
||
|
|
hmac : function(key, message) {
|
||
|
|
var ipad = "";
|
||
|
|
var opad = "";
|
||
|
|
|
||
|
|
for(i=0; i<key.length; i++)
|
||
|
|
{
|
||
|
|
ipad += String.fromCharCode(key.charCodeAt(i) ^ 0x36);
|
||
|
|
opad += String.fromCharCode(key.charCodeAt(i) ^ 0x5c);
|
||
|
|
}
|
||
|
|
while (ipad.length < 512/8)
|
||
|
|
{
|
||
|
|
ipad += String.fromCharCode(0x36);
|
||
|
|
opad += String.fromCharCode(0x5c);
|
||
|
|
}
|
||
|
|
|
||
|
|
result = sha256.digest(opad + sha256.digest(ipad + message));
|
||
|
|
|
||
|
|
return result;
|
||
|
|
}
|
||
|
|
};
|