32 lines
749 B
JavaScript
32 lines
749 B
JavaScript
|
/*
|
||
|
|
CryptoJS v3.0.2
|
||
|
|
code.google.com/p/crypto-js
|
||
|
|
(c) 2009-2012 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;
|
||
|
|
}
|
||
|
|
};
|