创建

node_modules/crypto-js/pad-ansix923.js

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+;(function (root, factory, undef) {
+	if (typeof exports === "object") {
+		// CommonJS
+		module.exports = exports = factory(require("./core"), require("./cipher-core"));
+	}
+	else if (typeof define === "function" && define.amd) {
+		// AMD
+		define(["./core", "./cipher-core"], factory);
+	}
+	else {
+		// Global (browser)
+		factory(root.CryptoJS);
+	}
+}(this, function (CryptoJS) {
+
+	/**
+	 * ANSI X.923 padding strategy.
+	 */
+	CryptoJS.pad.AnsiX923 = {
+	    pad: function (data, blockSize) {
+	        // Shortcuts
+	        var dataSigBytes = data.sigBytes;
+	        var blockSizeBytes = blockSize * 4;
+
+	        // Count padding bytes
+	        var nPaddingBytes = blockSizeBytes - dataSigBytes % blockSizeBytes;
+
+	        // Compute last byte position
+	        var lastBytePos = dataSigBytes + nPaddingBytes - 1;
+
+	        // Pad
+	        data.clamp();
+	        data.words[lastBytePos >>> 2] |= nPaddingBytes << (24 - (lastBytePos % 4) * 8);
+	        data.sigBytes += nPaddingBytes;
+	    },
+
+	    unpad: function (data) {
+	        // Get number of padding bytes from last byte
+	        var nPaddingBytes = data.words[(data.sigBytes - 1) >>> 2] & 0xff;
+
+	        // Remove padding
+	        data.sigBytes -= nPaddingBytes;
+	    }
+	};
+
+
+	return CryptoJS.pad.Ansix923;
+
+}));