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+/*!
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+ * Crypto-JS v1.1.0
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+ * http://code.google.com/p/crypto-js/
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+ * Copyright (c) 2009, Jeff Mott. All rights reserved.
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+ * http://code.google.com/p/crypto-js/wiki/License
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+ */
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+
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+const Crypto = {};
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+
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+(function(){
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+
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+var base64map = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
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+
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+
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+// Crypto utilities
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+var util = Crypto.util = {
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+
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+ // Bit-wise rotate left
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+ rotl: function (n, b) {
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+ return (n << b) | (n >>> (32 - b));
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+ },
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+
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+ // Bit-wise rotate right
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+ rotr: function (n, b) {
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+ return (n << (32 - b)) | (n >>> b);
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+ },
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+
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+ // Swap big-endian to little-endian and vice versa
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+ endian: function (n) {
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+
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+ // If number given, swap endian
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+ if (n.constructor == Number) {
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+ return util.rotl(n, 8) & 0x00FF00FF |
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+ util.rotl(n, 24) & 0xFF00FF00;
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+ }
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+
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+ // Else, assume array and swap all items
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+ for (var i = 0; i < n.length; i++)
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+ n[i] = util.endian(n[i]);
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+ return n;
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+
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+ },
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+
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+ // Generate an array of any length of random bytes
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+ randomBytes: function (n) {
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+ for (var bytes = []; n > 0; n--)
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+ bytes.push(Math.floor(Math.random() * 256));
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+ return bytes;
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+ },
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+
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+ // Convert a string to a byte array
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+ stringToBytes: function (str) {
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+ var bytes = [];
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+ for (var i = 0; i < str.length; i++)
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+ bytes.push(str.charCodeAt(i));
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+ return bytes;
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+ },
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+
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+ // Convert a byte array to a string
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+ bytesToString: function (bytes) {
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+ var str = [];
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+ for (var i = 0; i < bytes.length; i++)
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+ str.push(String.fromCharCode(bytes[i]));
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+ return str.join("");
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+ },
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+
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+ // Convert a string to big-endian 32-bit words
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+ stringToWords: function (str) {
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+ var words = [];
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+ for (var c = 0, b = 0; c < str.length; c++, b += 8)
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+ words[b >>> 5] |= str.charCodeAt(c) << (24 - b % 32);
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+ return words;
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+ },
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+
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+ // Convert a byte array to big-endian 32-bits words
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+ bytesToWords: function (bytes) {
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+ var words = [];
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+ for (var i = 0, b = 0; i < bytes.length; i++, b += 8)
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+ words[b >>> 5] |= bytes[i] << (24 - b % 32);
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+ return words;
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+ },
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+
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+ // Convert big-endian 32-bit words to a byte array
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+ wordsToBytes: function (words) {
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+ var bytes = [];
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+ for (var b = 0; b < words.length * 32; b += 8)
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+ bytes.push((words[b >>> 5] >>> (24 - b % 32)) & 0xFF);
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+ return bytes;
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+ },
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+
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+ // Convert a byte array to a hex string
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+ bytesToHex: function (bytes) {
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+ var hex = [];
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+ for (var i = 0; i < bytes.length; i++) {
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+ hex.push((bytes[i] >>> 4).toString(16));
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+ hex.push((bytes[i] & 0xF).toString(16));
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+ }
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+ return hex.join("");
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+ },
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+
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+ // Convert a hex string to a byte array
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+ hexToBytes: function (hex) {
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+ var bytes = [];
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+ for (var c = 0; c < hex.length; c += 2)
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+ bytes.push(parseInt(hex.substr(c, 2), 16));
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+ return bytes;
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+ },
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+
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+ // Convert a byte array to a base-64 string
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+ bytesToBase64: function (bytes) {
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+
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+ // Use browser-native function if it exists
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+ if (typeof btoa == "function") return btoa(util.bytesToString(bytes));
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+
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+ var base64 = [],
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+ overflow;
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+
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+ for (var i = 0; i < bytes.length; i++) {
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+ switch (i % 3) {
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+ case 0:
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+ base64.push(base64map.charAt(bytes[i] >>> 2));
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+ overflow = (bytes[i] & 0x3) << 4;
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+ break;
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+ case 1:
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+ base64.push(base64map.charAt(overflow | (bytes[i] >>> 4)));
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+ overflow = (bytes[i] & 0xF) << 2;
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+ break;
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+ case 2:
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+ base64.push(base64map.charAt(overflow | (bytes[i] >>> 6)));
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+ base64.push(base64map.charAt(bytes[i] & 0x3F));
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+ overflow = -1;
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+ }
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+ }
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+
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+ // Encode overflow bits, if there are any
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+ if (overflow != undefined && overflow != -1)
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+ base64.push(base64map.charAt(overflow));
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+
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+ // Add padding
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+ while (base64.length % 4 != 0) base64.push("=");
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+
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+ return base64.join("");
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+
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+ },
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+
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+ // Convert a base-64 string to a byte array
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+ base64ToBytes: function (base64) {
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+
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+ // Use browser-native function if it exists
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+ if (typeof atob == "function") return util.stringToBytes(atob(base64));
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+
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+ // Remove non-base-64 characters
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+ base64 = base64.replace(/[^A-Z0-9+\/]/ig, "");
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+
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+ var bytes = [];
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+
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+ for (var i = 0; i < base64.length; i++) {
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+ switch (i % 4) {
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+ case 1:
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+ bytes.push((base64map.indexOf(base64.charAt(i - 1)) << 2) |
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+ (base64map.indexOf(base64.charAt(i)) >>> 4));
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+ break;
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+ case 2:
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+ bytes.push(((base64map.indexOf(base64.charAt(i - 1)) & 0xF) << 4) |
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+ (base64map.indexOf(base64.charAt(i)) >>> 2));
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+ break;
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+ case 3:
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+ bytes.push(((base64map.indexOf(base64.charAt(i - 1)) & 0x3) << 6) |
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+ (base64map.indexOf(base64.charAt(i))));
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+ break;
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+ }
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+ }
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+
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+ return bytes;
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+
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+ }
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+
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+};
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+
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+// Crypto mode namespace
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+Crypto.mode = {};
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+
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+})();
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+
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+export default Crypto;
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