text: /*
  Javascript MD5 library - version 0.4 (Modified)
  
  Coded (2011) by Luigi Galli - LG@4e71.org - http://faultylabs.com
  Thanks to: Roberto Viola
  Modified at SyncTV, Inc. 2012 to employ AMD module loading and not uppercase result string.
  
  The below code is PUBLIC DOMAIN - NO WARRANTY!
  */
  
  /**
   * @name MD5
   * @namespace Utility for dealing with MD5 hashes. 
   */
  
  /**
   @name hash
   @memberof MD5
   @function 
   @description Computes the MD5 hash for the given input data
  
   @param {String|String[]|Number[]|ArrayBuffer|Float32Array|Float64Array|Int16Array|Int32Array|Int8Array|Uint16Array|Uint32Array|Uint8Array} data
   data as String - (Assumes Unicode code points are encoded as UTF-8. If you
   attempt to digest Unicode strings using other encodings
   you will get incorrect results!)
   <br />
   data as array of characters - (Assumes Unicode code points are encoded as UTF-8. If you
   attempt to digest Unicode strings using other encodings
   you will get incorrect results!)
   <br />
   data as array of bytes (plain javascript array of integer numbers)
   <br />
   data as ArrayBuffer (see: https://developer.mozilla.org/en/JavaScript_typed_arrays)
   <br />
   data as Float32Array, Float64Array, Int16Array, Int32Array, Int8Array, Uint16Array, Uint32Array or Uint8Array (see: https://developer.mozilla.org/en/JavaScript_typed_arrays)
  
   @returns {String} MD5 hash as lowercase hex string.
   */
  
  	var MD5 = {};
  	MD5.hash = function(data) {
  
  		// convert number to (unsigned) 32 bit hex, zero filled string
  		function to_zerofilled_hex(n) {
  			var t1 = (n >>> 0).toString(16)
  			return "00000000".substr(0, 8 - t1.length) + t1
  		}
  
  		// convert array of chars to array of bytes
  		function chars_to_bytes(ac) {
  			var retval = []
  			for(var i = 0; i < ac.length; i++) {
  				retval = retval.concat(str_to_bytes(ac[i]))
  			}
  			return retval
  		}
  
  		// convert a 64 bit unsigned number to array of bytes. Little endian
  		function int64_to_bytes(num) {
  			var retval = []
  			for(var i = 0; i < 8; i++) {
  				retval.push(num & 0xFF)
  				num = num >>> 8
  			}
  			return retval
  		}
  
  		//  32 bit left-rotation
  		function rol(num, places) {
  			return ((num << places) & 0xFFFFFFFF) | (num >>> (32 - places))
  		}
  
  		// The 4 MD5 functions
  		function fF(b, c, d) {
  			return (b & c) | (~b & d)
  		}
  
  		function fG(b, c, d) {
  			return (d & b) | (~d & c)
  		}
  
  		function fH(b, c, d) {
  			return b ^ c ^ d
  		}
  
  		function fI(b, c, d) {
  			return c ^ (b | ~d)
  		}
  
  		// pick 4 bytes at specified offset. Little-endian is assumed
  		function bytes_to_int32(arr, off) {
  			return (arr[off + 3] << 24) | (arr[off + 2] << 16) | (arr[off + 1] << 8) | (arr[off])
  		}
  
  		/*
  		 Conver string to array of bytes in UTF-8 encoding
  		 See:
  		 http://www.dangrossman.info/2007/05/25/handling-utf-8-in-javascript-php-and-non-utf8-databases/
  		 http://stackoverflow.com/questions/1240408/reading-bytes-from-a-javascript-string
  		 How about a String.getBytes(<ENCODING>) for Javascript!? Isn't it time to add it?
  		 */
  		function str_to_bytes(str) {
  			var retval = []
  			for(var i = 0; i < str.length; i++)
  				if(str.charCodeAt(i) <= 0x7F) {
  					retval.push(str.charCodeAt(i))
  				} else {
  					var tmp = encodeURIComponent(str.charAt(i)).substr(1).split('%')
  					for(var j = 0; j < tmp.length; j++) {
  						retval.push(parseInt(tmp[j], 0x10))
  					}
  				}
  			return retval
  		}
  
  		// convert the 4 32-bit buffers to a 128 bit hex string. (Little-endian is assumed)
  		function int128le_to_hex(a, b, c, d) {
  			var ra = ""
  			var t = 0
  			var ta = 0
  			for(var i = 3; i >= 0; i--) {
  				ta = arguments[i]
  				t = (ta & 0xFF)
  				ta = ta >>> 8
  				t = t << 8
  				t = t | (ta & 0xFF)
  				ta = ta >>> 8
  				t = t << 8
  				t = t | (ta & 0xFF)
  				ta = ta >>> 8
  				t = t << 8
  				t = t | ta
  				ra = ra + to_zerofilled_hex(t)
  			}
  			return ra
  		}
  
  		// conversion from typed byte array to plain javascript array
  		function typed_to_plain(tarr) {
  			var retval = new Array(tarr.length)
  			for(var i = 0; i < tarr.length; i++) {
  				retval[i] = tarr[i]
  			}
  			return retval
  		}
  
  		// check input data type and perform conversions if needed
  		var databytes = null
  		// String
  		var type_mismatch = null
  		if( typeof data == 'string') {
  			// convert string to array bytes
  			databytes = str_to_bytes(data)
  		} else if(data.constructor == Array) {
  			if(data.length === 0) {
  				// if it's empty, just assume array of bytes
  				databytes = data
  			} else if( typeof data[0] == 'string') {
  				databytes = chars_to_bytes(data)
  			} else if( typeof data[0] == 'number') {
  				databytes = data
  			} else {
  				type_mismatch = typeof data[0]
  			}
  		} else if( typeof ArrayBuffer != 'undefined') {
  			if( data instanceof ArrayBuffer) {
  				databytes = typed_to_plain(new Uint8Array(data))
  			} else if(( data instanceof Uint8Array) || ( data instanceof Int8Array)) {
  				databytes = typed_to_plain(data)
  			} else if(( data instanceof Uint32Array) || ( data instanceof Int32Array) || ( data instanceof Uint16Array) || ( data instanceof Int16Array) || ( data instanceof Float32Array) || ( data instanceof Float64Array)) {
  				databytes = typed_to_plain(new Uint8Array(data.buffer))
  			} else {
  				type_mismatch = typeof data
  			}
  		} else {
  			type_mismatch = typeof data
  		}
  
  		if(type_mismatch) {
  			alert('MD5 type mismatch, cannot process ' + type_mismatch)
  		}
  
  		function _add(n1, n2) {
  			return 0x0FFFFFFFF & (n1 + n2)
  		}
  
  		return do_digest()
  
  		function do_digest() {
  
  			// function update partial state for each run
  			function updateRun(nf, sin32, dw32, b32) {
  				var temp = d
  				d = c
  				c = b
  				//b = b + rol(a + (nf + (sin32 + dw32)), b32)
  				b = _add(b, rol(_add(a, _add(nf, _add(sin32, dw32))), b32))
  				a = temp
  			}
  
  			// save original length
  			var org_len = databytes.length
  
  			// first append the "1" + 7x "0"
  			databytes.push(0x80)
  
  			// determine required amount of padding
  			var tail = databytes.length % 64
  			// no room for msg length?
  			if(tail > 56) {
  				// pad to next 512 bit block
  				for(var i = 0; i < (64 - tail); i++) {
  					databytes.push(0x0)
  				}
  				tail = databytes.length % 64
  			}
  			for( i = 0; i < (56 - tail); i++) {
  				databytes.push(0x0)
  			}
  			// message length in bits mod 512 should now be 448
  			// append 64 bit, little-endian original msg length (in *bits*!)
  			databytes = databytes.concat(int64_to_bytes(org_len * 8))
  
  			// initialize 4x32 bit state
  			var h0 = 0x67452301
  			var h1 = 0xEFCDAB89
  			var h2 = 0x98BADCFE
  			var h3 = 0x10325476
  
  			// temp buffers
  			var a = 0, b = 0, c = 0, d = 0
  
  			// Digest message
  			for( i = 0; i < databytes.length / 64; i++) {
  				// initialize run
  				a = h0
  				b = h1
  				c = h2
  				d = h3
  
  				var ptr = i * 64
  
  				// do 64 runs
  				updateRun(fF(b, c, d), 0xd76aa478, bytes_to_int32(databytes, ptr), 7)
  				updateRun(fF(b, c, d), 0xe8c7b756, bytes_to_int32(databytes, ptr + 4), 12)
  				updateRun(fF(b, c, d), 0x242070db, bytes_to_int32(databytes, ptr + 8), 17)
  				updateRun(fF(b, c, d), 0xc1bdceee, bytes_to_int32(databytes, ptr + 12), 22)
  				updateRun(fF(b, c, d), 0xf57c0faf, bytes_to_int32(databytes, ptr + 16), 7)
  				updateRun(fF(b, c, d), 0x4787c62a, bytes_to_int32(databytes, ptr + 20), 12)
  				updateRun(fF(b, c, d), 0xa8304613, bytes_to_int32(databytes, ptr + 24), 17)
  				updateRun(fF(b, c, d), 0xfd469501, bytes_to_int32(databytes, ptr + 28), 22)
  				updateRun(fF(b, c, d), 0x698098d8, bytes_to_int32(databytes, ptr + 32), 7)
  				updateRun(fF(b, c, d), 0x8b44f7af, bytes_to_int32(databytes, ptr + 36), 12)
  				updateRun(fF(b, c, d), 0xffff5bb1, bytes_to_int32(databytes, ptr + 40), 17)
  				updateRun(fF(b, c, d), 0x895cd7be, bytes_to_int32(databytes, ptr + 44), 22)
  				updateRun(fF(b, c, d), 0x6b901122, bytes_to_int32(databytes, ptr + 48), 7)
  				updateRun(fF(b, c, d), 0xfd987193, bytes_to_int32(databytes, ptr + 52), 12)
  				updateRun(fF(b, c, d), 0xa679438e, bytes_to_int32(databytes, ptr + 56), 17)
  				updateRun(fF(b, c, d), 0x49b40821, bytes_to_int32(databytes, ptr + 60), 22)
  				updateRun(fG(b, c, d), 0xf61e2562, bytes_to_int32(databytes, ptr + 4), 5)
  				updateRun(fG(b, c, d), 0xc040b340, bytes_to_int32(databytes, ptr + 24), 9)
  				updateRun(fG(b, c, d), 0x265e5a51, bytes_to_int32(databytes, ptr + 44), 14)
  				updateRun(fG(b, c, d), 0xe9b6c7aa, bytes_to_int32(databytes, ptr), 20)
  				updateRun(fG(b, c, d), 0xd62f105d, bytes_to_int32(databytes, ptr + 20), 5)
  				updateRun(fG(b, c, d), 0x2441453, bytes_to_int32(databytes, ptr + 40), 9)
  				updateRun(fG(b, c, d), 0xd8a1e681, bytes_to_int32(databytes, ptr + 60), 14)
  				updateRun(fG(b, c, d), 0xe7d3fbc8, bytes_to_int32(databytes, ptr + 16), 20)
  				updateRun(fG(b, c, d), 0x21e1cde6, bytes_to_int32(databytes, ptr + 36), 5)
  				updateRun(fG(b, c, d), 0xc33707d6, bytes_to_int32(databytes, ptr + 56), 9)
  				updateRun(fG(b, c, d), 0xf4d50d87, bytes_to_int32(databytes, ptr + 12), 14)
  				updateRun(fG(b, c, d), 0x455a14ed, bytes_to_int32(databytes, ptr + 32), 20)
  				updateRun(fG(b, c, d), 0xa9e3e905, bytes_to_int32(databytes, ptr + 52), 5)
  				updateRun(fG(b, c, d), 0xfcefa3f8, bytes_to_int32(databytes, ptr + 8), 9)
  				updateRun(fG(b, c, d), 0x676f02d9, bytes_to_int32(databytes, ptr + 28), 14)
  				updateRun(fG(b, c, d), 0x8d2a4c8a, bytes_to_int32(databytes, ptr + 48), 20)
  				updateRun(fH(b, c, d), 0xfffa3942, bytes_to_int32(databytes, ptr + 20), 4)
  				updateRun(fH(b, c, d), 0x8771f681, bytes_to_int32(databytes, ptr + 32), 11)
  				updateRun(fH(b, c, d), 0x6d9d6122, bytes_to_int32(databytes, ptr + 44), 16)
  				updateRun(fH(b, c, d), 0xfde5380c, bytes_to_int32(databytes, ptr + 56), 23)
  				updateRun(fH(b, c, d), 0xa4beea44, bytes_to_int32(databytes, ptr + 4), 4)
  				updateRun(fH(b, c, d), 0x4bdecfa9, bytes_to_int32(databytes, ptr + 16), 11)
  				updateRun(fH(b, c, d), 0xf6bb4b60, bytes_to_int32(databytes, ptr + 28), 16)
  				updateRun(fH(b, c, d), 0xbebfbc70, bytes_to_int32(databytes, ptr + 40), 23)
  				updateRun(fH(b, c, d), 0x289b7ec6, bytes_to_int32(databytes, ptr + 52), 4)
  				updateRun(fH(b, c, d), 0xeaa127fa, bytes_to_int32(databytes, ptr), 11)
  				updateRun(fH(b, c, d), 0xd4ef3085, bytes_to_int32(databytes, ptr + 12), 16)
  				updateRun(fH(b, c, d), 0x4881d05, bytes_to_int32(databytes, ptr + 24), 23)
  				updateRun(fH(b, c, d), 0xd9d4d039, bytes_to_int32(databytes, ptr + 36), 4)
  				updateRun(fH(b, c, d), 0xe6db99e5, bytes_to_int32(databytes, ptr + 48), 11)
  				updateRun(fH(b, c, d), 0x1fa27cf8, bytes_to_int32(databytes, ptr + 60), 16)
  				updateRun(fH(b, c, d), 0xc4ac5665, bytes_to_int32(databytes, ptr + 8), 23)
  				updateRun(fI(b, c, d), 0xf4292244, bytes_to_int32(databytes, ptr), 6)
  				updateRun(fI(b, c, d), 0x432aff97, bytes_to_int32(databytes, ptr + 28), 10)
  				updateRun(fI(b, c, d), 0xab9423a7, bytes_to_int32(databytes, ptr + 56), 15)
  				updateRun(fI(b, c, d), 0xfc93a039, bytes_to_int32(databytes, ptr + 20), 21)
  				updateRun(fI(b, c, d), 0x655b59c3, bytes_to_int32(databytes, ptr + 48), 6)
  				updateRun(fI(b, c, d), 0x8f0ccc92, bytes_to_int32(databytes, ptr + 12), 10)
  				updateRun(fI(b, c, d), 0xffeff47d, bytes_to_int32(databytes, ptr + 40), 15)
  				updateRun(fI(b, c, d), 0x85845dd1, bytes_to_int32(databytes, ptr + 4), 21)
  				updateRun(fI(b, c, d), 0x6fa87e4f, bytes_to_int32(databytes, ptr + 32), 6)
  				updateRun(fI(b, c, d), 0xfe2ce6e0, bytes_to_int32(databytes, ptr + 60), 10)
  				updateRun(fI(b, c, d), 0xa3014314, bytes_to_int32(databytes, ptr + 24), 15)
  				updateRun(fI(b, c, d), 0x4e0811a1, bytes_to_int32(databytes, ptr + 52), 21)
  				updateRun(fI(b, c, d), 0xf7537e82, bytes_to_int32(databytes, ptr + 16), 6)
  				updateRun(fI(b, c, d), 0xbd3af235, bytes_to_int32(databytes, ptr + 44), 10)
  				updateRun(fI(b, c, d), 0x2ad7d2bb, bytes_to_int32(databytes, ptr + 8), 15)
  				updateRun(fI(b, c, d), 0xeb86d391, bytes_to_int32(databytes, ptr + 36), 21)
  
  				// update buffers
  				h0 = _add(h0, a)
  				h1 = _add(h1, b)
  				h2 = _add(h2, c)
  				h3 = _add(h3, d)
  			}
  			// Done! Convert buffers to 128 bit (LE)
  			return int128le_to_hex(h3, h2, h1, h0)
  		}
  
  	};
  