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402 lines
11 KiB
402 lines
11 KiB
/*
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* 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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/* global define */
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/* eslint-disable strict */
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;(function ($) {
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'use strict'
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/**
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* Add integers, wrapping at 2^32.
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* This uses 16-bit operations internally to work around bugs in interpreters.
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*
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* @param {number} x First integer
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* @param {number} y Second integer
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* @returns {number} Sum
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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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* @param {number} num 32-bit number
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* @param {number} cnt Rotation count
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* @returns {number} Rotated number
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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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* Basic operation the algorithm uses.
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*
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* @param {number} q q
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* @param {number} a a
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* @param {number} b b
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* @param {number} x x
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* @param {number} s s
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* @param {number} t t
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* @returns {number} Result
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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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/**
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* Basic operation the algorithm uses.
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*
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* @param {number} a a
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* @param {number} b b
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* @param {number} c c
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* @param {number} d d
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* @param {number} x x
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* @param {number} s s
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* @param {number} t t
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* @returns {number} Result
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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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/**
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* Basic operation the algorithm uses.
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*
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* @param {number} a a
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* @param {number} b b
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* @param {number} c c
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* @param {number} d d
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* @param {number} x x
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* @param {number} s s
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* @param {number} t t
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* @returns {number} Result
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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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/**
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* Basic operation the algorithm uses.
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*
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* @param {number} a a
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* @param {number} b b
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* @param {number} c c
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* @param {number} d d
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* @param {number} x x
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* @param {number} s s
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* @param {number} t t
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* @returns {number} Result
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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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/**
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* Basic operation the algorithm uses.
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*
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* @param {number} a a
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* @param {number} b b
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* @param {number} c c
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* @param {number} d d
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* @param {number} x x
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* @param {number} s s
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* @param {number} t t
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* @returns {number} Result
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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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/**
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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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* @param {Array} x Array of little-endian words
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* @param {number} len Bit length
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* @returns {Array<number>} MD5 Array
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*/
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function binlMD5(x, len) {
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/* append padding */
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x[len >> 5] |= 0x80 << len % 32
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x[(((len + 64) >>> 9) << 4) + 14] = len
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var i
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var olda
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var oldb
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var oldc
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var oldd
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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 (i = 0; i < x.length; i += 16) {
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olda = a
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oldb = b
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oldc = c
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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 of little-endian words to a string
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*
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* @param {Array<number>} input MD5 Array
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* @returns {string} MD5 string
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*/
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function binl2rstr(input) {
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var i
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var output = ''
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var length32 = input.length * 32
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for (i = 0; i < length32; i += 8) {
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output += String.fromCharCode((input[i >> 5] >>> i % 32) & 0xff)
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}
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return output
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}
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/**
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* Convert a raw string 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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* @param {string} input Raw input string
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* @returns {Array<number>} Array of little-endian words
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*/
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function rstr2binl(input) {
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var i
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var output = []
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output[(input.length >> 2) - 1] = undefined
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for (i = 0; i < output.length; i += 1) {
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output[i] = 0
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}
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var length8 = input.length * 8
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for (i = 0; i < length8; i += 8) {
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output[i >> 5] |= (input.charCodeAt(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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* Calculate the MD5 of a raw string
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*
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* @param {string} s Input string
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* @returns {string} Raw MD5 string
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*/
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function rstrMD5(s) {
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return binl2rstr(binlMD5(rstr2binl(s), s.length * 8))
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}
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/**
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* Calculates the HMAC-MD5 of a key and some data (raw strings)
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*
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* @param {string} key HMAC key
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* @param {string} data Raw input string
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* @returns {string} Raw MD5 string
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*/
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function rstrHMACMD5(key, data) {
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var i
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var bkey = rstr2binl(key)
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var ipad = []
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var opad = []
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var hash
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ipad[15] = opad[15] = undefined
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if (bkey.length > 16) {
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bkey = binlMD5(bkey, key.length * 8)
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}
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for (i = 0; i < 16; i += 1) {
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ipad[i] = bkey[i] ^ 0x36363636
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opad[i] = bkey[i] ^ 0x5c5c5c5c
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}
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hash = binlMD5(ipad.concat(rstr2binl(data)), 512 + data.length * 8)
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return binl2rstr(binlMD5(opad.concat(hash), 512 + 128))
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}
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/**
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* Convert a raw string to a hex string
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*
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* @param {string} input Raw input string
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* @returns {string} Hex encoded string
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*/
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function rstr2hex(input) {
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var hexTab = '0123456789abcdef'
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var output = ''
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var x
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var i
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for (i = 0; i < input.length; i += 1) {
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x = input.charCodeAt(i)
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output += hexTab.charAt((x >>> 4) & 0x0f) + hexTab.charAt(x & 0x0f)
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}
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return output
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}
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/**
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* Encode a string as UTF-8
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*
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* @param {string} input Input string
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* @returns {string} UTF8 string
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*/
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function str2rstrUTF8(input) {
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return unescape(encodeURIComponent(input))
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}
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/**
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* Encodes input string as raw MD5 string
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*
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* @param {string} s Input string
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* @returns {string} Raw MD5 string
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*/
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function rawMD5(s) {
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return rstrMD5(str2rstrUTF8(s))
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}
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/**
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* Encodes input string as Hex encoded string
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*
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* @param {string} s Input string
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* @returns {string} Hex encoded string
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*/
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function hexMD5(s) {
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return rstr2hex(rawMD5(s))
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}
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/**
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* Calculates the raw HMAC-MD5 for the given key and data
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*
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* @param {string} k HMAC key
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* @param {string} d Input string
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* @returns {string} Raw MD5 string
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*/
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function rawHMACMD5(k, d) {
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return rstrHMACMD5(str2rstrUTF8(k), str2rstrUTF8(d))
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}
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/**
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* Calculates the Hex encoded HMAC-MD5 for the given key and data
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*
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* @param {string} k HMAC key
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* @param {string} d Input string
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* @returns {string} Raw MD5 string
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*/
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function hexHMACMD5(k, d) {
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return rstr2hex(rawHMACMD5(k, d))
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}
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/**
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* Calculates MD5 value for a given string.
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* If a key is provided, calculates the HMAC-MD5 value.
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* Returns a Hex encoded string unless the raw argument is given.
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*
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* @param {string} string Input string
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* @param {string} [key] HMAC key
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* @param {boolean} [raw] Raw output switch
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* @returns {string} MD5 output
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*/
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function md5(string, key, raw) {
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if (!key) {
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if (!raw) {
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return hexMD5(string)
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}
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return rawMD5(string)
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}
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if (!raw) {
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return hexHMACMD5(key, string)
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}
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return rawHMACMD5(key, string)
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}
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if (typeof define === 'function' && define.amd) {
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define(function () {
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return md5
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})
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} else if (typeof module === 'object' && module.exports) {
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module.exports = md5
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} else {
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$.md5 = md5
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}
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})(this)
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