mirrors/signal-desktop
2
0
Fork 0
Code Issues Pull requests Projects Releases Packages 2 Wiki Activity Actions

HMAC Update for Protov3

Browse source
This commit is contained in:
Matt Corallo 2014-07-20 16:31:47 -04:00
parent b5c6e3d101
commit 3190fe97f9
2 changed files with 5 additions and 7 deletions
Download patch file Download diff file Expand all files Collapse all files

4
js/crypto.js
View file

@ -315,11 +315,11 @@ window.textsecure.crypto = function() {
var infoBuffer = new ArrayBuffer(info.byteLength + 1 + 32);
var infoArray = new Uint8Array(infoBuffer);
infoArray.set(new Uint8Array(info), 32);
infoArray[infoArray.length - 1] = 0;
infoArray[infoArray.length - 1] = 1;
// TextSecure implements a slightly tweaked version of RFC 5869: the 0 and 1 should be 1 and 2 here
return HmacSHA256(PRK, infoBuffer.slice(32)).then(function(T1) {
infoArray.set(new Uint8Array(T1));
infoArray[infoArray.length - 1] = 1;
infoArray[infoArray.length - 1] = 2;
return HmacSHA256(PRK, infoBuffer).then(function(T2) {
return [ T1, T2 ];
});