filer/lib/crypto-js/components/pad-iso97971.js

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/*
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
*/
/**
* ISO/IEC 9797-1 Padding Method 2.
*/
CryptoJS.pad.Iso97971 = {
pad: function (data, blockSize) {
// Add 0x80 byte
data.concat(CryptoJS.lib.WordArray.create([0x80000000], 1));
// Zero pad the rest
CryptoJS.pad.ZeroPadding.pad(data, blockSize);
},
unpad: function (data) {
// Remove zero padding
CryptoJS.pad.ZeroPadding.unpad(data);
// Remove one more byte -- the 0x80 byte
data.sigBytes--;
}
};