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					215 lines
				
				6.7 KiB
			
		
		
			
		
	
	
					215 lines
				
				6.7 KiB
			| 
								 
											3 years ago
										 
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								/*
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								 * Browser-compatible JavaScript MD5
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								 *
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								 * Modification of JavaScript MD5
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								 * https://github.com/blueimp/JavaScript-MD5
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								 *
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								 * Copyright 2011, Sebastian Tschan
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								 * https://blueimp.net
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								 *
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								 * Licensed under the MIT license:
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								 * https://opensource.org/licenses/MIT
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								 *
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								 * Based on
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								 * A JavaScript implementation of the RSA Data Security, Inc. MD5 Message
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								 * Digest Algorithm, as defined in RFC 1321.
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								 * Version 2.2 Copyright (C) Paul Johnston 1999 - 2009
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								 * Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet
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								 * Distributed under the BSD License
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								 * See http://pajhome.org.uk/crypt/md5 for more info.
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								 */
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								function md5(bytes) {
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								  if (typeof bytes === 'string') {
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								    var msg = unescape(encodeURIComponent(bytes)); // UTF8 escape
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								    bytes = new Uint8Array(msg.length);
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								    for (var i = 0; i < msg.length; ++i) {
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								      bytes[i] = msg.charCodeAt(i);
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								    }
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								  }
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								  return md5ToHexEncodedArray(wordsToMd5(bytesToWords(bytes), bytes.length * 8));
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								}
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								/*
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								 * Convert an array of little-endian words to an array of bytes
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								 */
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								function md5ToHexEncodedArray(input) {
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								  var output = [];
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								  var length32 = input.length * 32;
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								  var hexTab = '0123456789abcdef';
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								  for (var i = 0; i < length32; i += 8) {
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								    var x = input[i >> 5] >>> i % 32 & 0xff;
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								    var hex = parseInt(hexTab.charAt(x >>> 4 & 0x0f) + hexTab.charAt(x & 0x0f), 16);
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								    output.push(hex);
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								  }
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								  return output;
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								}
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								/**
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								 * Calculate output length with padding and bit length
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								 */
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								function getOutputLength(inputLength8) {
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								  return (inputLength8 + 64 >>> 9 << 4) + 14 + 1;
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								}
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								/*
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								 * Calculate the MD5 of an array of little-endian words, and a bit length.
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								 */
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								function wordsToMd5(x, len) {
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								  /* append padding */
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								  x[len >> 5] |= 0x80 << len % 32;
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								  x[getOutputLength(len) - 1] = len;
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								  var a = 1732584193;
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								  var b = -271733879;
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								  var c = -1732584194;
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								  var d = 271733878;
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								  for (var i = 0; i < x.length; i += 16) {
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								    var olda = a;
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								    var oldb = b;
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								    var oldc = c;
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								    var oldd = d;
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								    a = md5ff(a, b, c, d, x[i], 7, -680876936);
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								    d = md5ff(d, a, b, c, x[i + 1], 12, -389564586);
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								    c = md5ff(c, d, a, b, x[i + 2], 17, 606105819);
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								    b = md5ff(b, c, d, a, x[i + 3], 22, -1044525330);
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								    a = md5ff(a, b, c, d, x[i + 4], 7, -176418897);
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								    d = md5ff(d, a, b, c, x[i + 5], 12, 1200080426);
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								    c = md5ff(c, d, a, b, x[i + 6], 17, -1473231341);
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								    b = md5ff(b, c, d, a, x[i + 7], 22, -45705983);
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								    a = md5ff(a, b, c, d, x[i + 8], 7, 1770035416);
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								    d = md5ff(d, a, b, c, x[i + 9], 12, -1958414417);
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								    c = md5ff(c, d, a, b, x[i + 10], 17, -42063);
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								    b = md5ff(b, c, d, a, x[i + 11], 22, -1990404162);
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								    a = md5ff(a, b, c, d, x[i + 12], 7, 1804603682);
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								    d = md5ff(d, a, b, c, x[i + 13], 12, -40341101);
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								    c = md5ff(c, d, a, b, x[i + 14], 17, -1502002290);
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								    b = md5ff(b, c, d, a, x[i + 15], 22, 1236535329);
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								    a = md5gg(a, b, c, d, x[i + 1], 5, -165796510);
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								    d = md5gg(d, a, b, c, x[i + 6], 9, -1069501632);
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								    c = md5gg(c, d, a, b, x[i + 11], 14, 643717713);
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								    b = md5gg(b, c, d, a, x[i], 20, -373897302);
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								    a = md5gg(a, b, c, d, x[i + 5], 5, -701558691);
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								    d = md5gg(d, a, b, c, x[i + 10], 9, 38016083);
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								    c = md5gg(c, d, a, b, x[i + 15], 14, -660478335);
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								    b = md5gg(b, c, d, a, x[i + 4], 20, -405537848);
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								    a = md5gg(a, b, c, d, x[i + 9], 5, 568446438);
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								    d = md5gg(d, a, b, c, x[i + 14], 9, -1019803690);
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								    c = md5gg(c, d, a, b, x[i + 3], 14, -187363961);
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								    b = md5gg(b, c, d, a, x[i + 8], 20, 1163531501);
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								    a = md5gg(a, b, c, d, x[i + 13], 5, -1444681467);
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								    d = md5gg(d, a, b, c, x[i + 2], 9, -51403784);
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								    c = md5gg(c, d, a, b, x[i + 7], 14, 1735328473);
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								    b = md5gg(b, c, d, a, x[i + 12], 20, -1926607734);
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								    a = md5hh(a, b, c, d, x[i + 5], 4, -378558);
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								    d = md5hh(d, a, b, c, x[i + 8], 11, -2022574463);
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								    c = md5hh(c, d, a, b, x[i + 11], 16, 1839030562);
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								    b = md5hh(b, c, d, a, x[i + 14], 23, -35309556);
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								    a = md5hh(a, b, c, d, x[i + 1], 4, -1530992060);
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								    d = md5hh(d, a, b, c, x[i + 4], 11, 1272893353);
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								    c = md5hh(c, d, a, b, x[i + 7], 16, -155497632);
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								    b = md5hh(b, c, d, a, x[i + 10], 23, -1094730640);
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								    a = md5hh(a, b, c, d, x[i + 13], 4, 681279174);
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								    d = md5hh(d, a, b, c, x[i], 11, -358537222);
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								    c = md5hh(c, d, a, b, x[i + 3], 16, -722521979);
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								    b = md5hh(b, c, d, a, x[i + 6], 23, 76029189);
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								    a = md5hh(a, b, c, d, x[i + 9], 4, -640364487);
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								    d = md5hh(d, a, b, c, x[i + 12], 11, -421815835);
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								    c = md5hh(c, d, a, b, x[i + 15], 16, 530742520);
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								    b = md5hh(b, c, d, a, x[i + 2], 23, -995338651);
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								    a = md5ii(a, b, c, d, x[i], 6, -198630844);
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								    d = md5ii(d, a, b, c, x[i + 7], 10, 1126891415);
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								    c = md5ii(c, d, a, b, x[i + 14], 15, -1416354905);
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								    b = md5ii(b, c, d, a, x[i + 5], 21, -57434055);
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								    a = md5ii(a, b, c, d, x[i + 12], 6, 1700485571);
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								    d = md5ii(d, a, b, c, x[i + 3], 10, -1894986606);
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								    c = md5ii(c, d, a, b, x[i + 10], 15, -1051523);
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								    b = md5ii(b, c, d, a, x[i + 1], 21, -2054922799);
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								    a = md5ii(a, b, c, d, x[i + 8], 6, 1873313359);
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								    d = md5ii(d, a, b, c, x[i + 15], 10, -30611744);
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								    c = md5ii(c, d, a, b, x[i + 6], 15, -1560198380);
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								    b = md5ii(b, c, d, a, x[i + 13], 21, 1309151649);
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								    a = md5ii(a, b, c, d, x[i + 4], 6, -145523070);
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								    d = md5ii(d, a, b, c, x[i + 11], 10, -1120210379);
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								    c = md5ii(c, d, a, b, x[i + 2], 15, 718787259);
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								    b = md5ii(b, c, d, a, x[i + 9], 21, -343485551);
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								    a = safeAdd(a, olda);
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								    b = safeAdd(b, oldb);
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								    c = safeAdd(c, oldc);
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								    d = safeAdd(d, oldd);
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								  }
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								  return [a, b, c, d];
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								}
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								/*
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								 * Convert an array bytes to an array of little-endian words
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								 * Characters >255 have their high-byte silently ignored.
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								 */
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								function bytesToWords(input) {
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								  if (input.length === 0) {
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								    return [];
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								  }
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								  var length8 = input.length * 8;
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								  var output = new Uint32Array(getOutputLength(length8));
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								  for (var i = 0; i < length8; i += 8) {
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								    output[i >> 5] |= (input[i / 8] & 0xff) << i % 32;
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								  }
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								  return output;
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								}
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								/*
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								 * Add integers, wrapping at 2^32. This uses 16-bit operations internally
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								 * to work around bugs in some JS interpreters.
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								 */
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								function safeAdd(x, y) {
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								  var lsw = (x & 0xffff) + (y & 0xffff);
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								  var msw = (x >> 16) + (y >> 16) + (lsw >> 16);
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								  return msw << 16 | lsw & 0xffff;
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								}
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								/*
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								 * Bitwise rotate a 32-bit number to the left.
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								 */
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								function bitRotateLeft(num, cnt) {
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								  return num << cnt | num >>> 32 - cnt;
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								}
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								/*
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								 * These functions implement the four basic operations the algorithm uses.
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								 */
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								function md5cmn(q, a, b, x, s, t) {
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								  return safeAdd(bitRotateLeft(safeAdd(safeAdd(a, q), safeAdd(x, t)), s), b);
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								}
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								function md5ff(a, b, c, d, x, s, t) {
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								  return md5cmn(b & c | ~b & d, a, b, x, s, t);
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								}
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								function md5gg(a, b, c, d, x, s, t) {
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								  return md5cmn(b & d | c & ~d, a, b, x, s, t);
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								}
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								function md5hh(a, b, c, d, x, s, t) {
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								  return md5cmn(b ^ c ^ d, a, b, x, s, t);
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								}
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								function md5ii(a, b, c, d, x, s, t) {
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								  return md5cmn(c ^ (b | ~d), a, b, x, s, t);
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								}
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								export default md5;
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