/*
|
CryptoJS v3.1.2
|
code.google.com/p/crypto-js
|
(c) 2009-2013 by Jeff Mott. All rights reserved.
|
code.google.com/p/crypto-js/wiki/License
|
*/
|
/**
|
* Zero padding strategy.
|
*/
|
CryptoJS.pad.ZeroPadding = {
|
pad: function (data, blockSize) {
|
// Shortcut
|
var blockSizeBytes = blockSize * 4;
|
|
// Pad
|
data.clamp();
|
data.sigBytes += blockSizeBytes - ((data.sigBytes % blockSizeBytes) || blockSizeBytes);
|
},
|
|
unpad: function (data) {
|
// Shortcut
|
var dataWords = data.words;
|
|
// Unpad
|
var i = data.sigBytes - 1;
|
while (!((dataWords[i >>> 2] >>> (24 - (i % 4) * 8)) & 0xff)) {
|
i--;
|
}
|
data.sigBytes = i + 1;
|
}
|
};
|
