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45 lines
1.0 KiB
JavaScript
45 lines
1.0 KiB
JavaScript
2 years ago
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;(function (root, factory, undef) {
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if (typeof exports === "object") {
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// CommonJS
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module.exports = exports = factory(require("./core"), require("./cipher-core"));
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}
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else if (typeof define === "function" && define.amd) {
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// AMD
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define(["./core", "./cipher-core"], factory);
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}
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else {
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// Global (browser)
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factory(root.CryptoJS);
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}
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}(this, function (CryptoJS) {
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/**
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* Zero padding strategy.
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*/
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CryptoJS.pad.ZeroPadding = {
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pad: function (data, blockSize) {
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// Shortcut
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var blockSizeBytes = blockSize * 4;
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// Pad
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data.clamp();
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data.sigBytes += blockSizeBytes - ((data.sigBytes % blockSizeBytes) || blockSizeBytes);
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},
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unpad: function (data) {
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// Shortcut
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var dataWords = data.words;
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// Unpad
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var i = data.sigBytes - 1;
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while (!((dataWords[i >>> 2] >>> (24 - (i % 4) * 8)) & 0xff)) {
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i--;
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}
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data.sigBytes = i + 1;
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}
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};
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return CryptoJS.pad.ZeroPadding;
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}));
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