###
*
*  jQuery MD5 Plugin
*
*  string jQuery.MD5( string )
*  input string and return string
*  The $.MD5() function convert string to MD5
*
*  (c) 2012 Winai Reungjam
*  licensed under the MIT licenses.
*
*  This function orginally get from the WebToolkit and rewrite for using as the jQuery plugin.
*  MD5 (Message-Digest Algorithm)
*  http://www.webtoolkit.info/
*
###
do ($ = jQuery) ->  
  MD5 = (string) ->
    RotateLeft = (lValue, iShiftBits) ->
      return (lValue << iShiftBits) | (lValue >>> (32 - iShiftBits))
    AddUnsigned = (lX, lY) ->
      lX8 = lX & 0x80000000
      lY8 = lY & 0x80000000
      lX4 = lX & 0x40000000
      lY4 = lY & 0x40000000
      lResult = (lX & 0x3FFFFFFF) + (lY & 0x3FFFFFFF)
      if lX4 & lY4
        return lResult ^ 0x80000000 ^ lX8 ^ lY8
      if lX4 | lY4
        if lResult & 0x40000000
          return lResult ^ 0xC0000000 ^ lX8 ^ lY8
        else
          return lResult ^ 0x40000000 ^ lX8 ^ lY8
      else
        return lResult ^ lX8 ^ lY8
    F = (x, y, z) ->
      return (x & y) | ((~x) & z)
    G = (x, y, z) ->
      return (x & z) | (y & (~z))
    H = (x, y, z) ->
      return x ^ y ^ z
    I = (x, y, z) ->
      return y ^ (x | (~z))
    FF = (a, b, c, d, x, s, ac) ->
      a = AddUnsigned(a, AddUnsigned(AddUnsigned(F(b, c, d), x), ac))
      return AddUnsigned(RotateLeft(a, s), b)
    GG = (a, b, c, d, x, s, ac) ->
      a = AddUnsigned(a, AddUnsigned(AddUnsigned(G(b, c, d), x), ac))
      return AddUnsigned(RotateLeft(a, s), b)
    HH = (a, b, c, d, x, s, ac) ->
      a = AddUnsigned(a, AddUnsigned(AddUnsigned(H(b, c, d), x), ac))
      return AddUnsigned(RotateLeft(a, s), b)
    II = (a, b, c, d, x, s, ac) ->
      a = AddUnsigned(a, AddUnsigned(AddUnsigned(I(b, c, d), x), ac))
      return AddUnsigned(RotateLeft(a, s), b)
    ConvertToWordArray = (string) ->
      lMessageLength = string.length
      lNumberOfWords_temp1 = lMessageLength + 8
      lNumberOfWords_temp2 = (lNumberOfWords_temp1 - (lNumberOfWords_temp1 % 64)) / 64
      lNumberOfWords = (lNumberOfWords_temp2 + 1) * 16
      lWordArray = Array(lNumberOfWords - 1)
      lBytePosition = 0
      lByteCount = 0
      while lByteCount < lMessageLength
        lWordCount = (lByteCount - (lByteCount % 4)) / 4
        lBytePosition = (lByteCount % 4) * 8
        lWordArray[lWordCount] = lWordArray[lWordCount] | (string.charCodeAt(lByteCount) << lBytePosition)
        lByteCount++
      lWordCount = (lByteCount - (lByteCount % 4)) / 4
      lBytePosition = (lByteCount % 4) * 8
      lWordArray[lWordCount] = lWordArray[lWordCount] | (0x80 << lBytePosition)
      lWordArray[lNumberOfWords - 2] = lMessageLength << 3
      lWordArray[lNumberOfWords - 1] = lMessageLength >>> 29
      return lWordArray
    WordToHex = (lValue) ->
      WordToHexValue = ""
      WordToHexValue_temp = ""
      lCount = 0
      while lCount <= 3
        lByte = (lValue >>> (lCount * 8)) & 255
        WordToHexValue_temp = "0" + lByte.toString(16)
        WordToHexValue = WordToHexValue + WordToHexValue_temp.substr(WordToHexValue_temp.length - 2, 2)
        lCount++
      return WordToHexValue
    Utf8Encode = (string) ->
      string = string.replace(/\r\n/g, "\n")
      utftext = ""
      n = 0
      while n < string.length
        c = string.charCodeAt(n)
        if c < 128
          utftext += String.fromCharCode(c)
        else if (c > 127) and (c < 2048)
          utftext += String.fromCharCode((c >> 6) | 192)
          utftext += String.fromCharCode((c & 63) | 128)
        else
          utftext += String.fromCharCode((c >> 12) | 224)
          utftext += String.fromCharCode(((c >> 6) & 63) | 128)
          utftext += String.fromCharCode((c & 63) | 128)
        n++
      return utftext
    x = Array()
    S11 = 7
    S12 = 12
    S13 = 17
    S14 = 22
    S21 = 5
    S22 = 9
    S23 = 14
    S24 = 20
    S31 = 4
    S32 = 11
    S33 = 16
    S34 = 23
    S41 = 6
    S42 = 10
    S43 = 15
    S44 = 21
    string = Utf8Encode(string)
    x = ConvertToWordArray(string)
    a = 0x67452301
    b = 0xEFCDAB89
    c = 0x98BADCFE
    d = 0x10325476
    k = 0
    while k < x.length
      AA = a
      BB = b
      CC = c
      DD = d
      a = FF(a, b, c, d, x[k + 0], S11, 0xD76AA478)
      d = FF(d, a, b, c, x[k + 1], S12, 0xE8C7B756)
      c = FF(c, d, a, b, x[k + 2], S13, 0x242070DB)
      b = FF(b, c, d, a, x[k + 3], S14, 0xC1BDCEEE)
      a = FF(a, b, c, d, x[k + 4], S11, 0xF57C0FAF)
      d = FF(d, a, b, c, x[k + 5], S12, 0x4787C62A)
      c = FF(c, d, a, b, x[k + 6], S13, 0xA8304613)
      b = FF(b, c, d, a, x[k + 7], S14, 0xFD469501)
      a = FF(a, b, c, d, x[k + 8], S11, 0x698098D8)
      d = FF(d, a, b, c, x[k + 9], S12, 0x8B44F7AF)
      c = FF(c, d, a, b, x[k + 10], S13, 0xFFFF5BB1)
      b = FF(b, c, d, a, x[k + 11], S14, 0x895CD7BE)
      a = FF(a, b, c, d, x[k + 12], S11, 0x6B901122)
      d = FF(d, a, b, c, x[k + 13], S12, 0xFD987193)
      c = FF(c, d, a, b, x[k + 14], S13, 0xA679438E)
      b = FF(b, c, d, a, x[k + 15], S14, 0x49B40821)
      a = GG(a, b, c, d, x[k + 1], S21, 0xF61E2562)
      d = GG(d, a, b, c, x[k + 6], S22, 0xC040B340)
      c = GG(c, d, a, b, x[k + 11], S23, 0x265E5A51)
      b = GG(b, c, d, a, x[k + 0], S24, 0xE9B6C7AA)
      a = GG(a, b, c, d, x[k + 5], S21, 0xD62F105D)
      d = GG(d, a, b, c, x[k + 10], S22, 0x2441453)
      c = GG(c, d, a, b, x[k + 15], S23, 0xD8A1E681)
      b = GG(b, c, d, a, x[k + 4], S24, 0xE7D3FBC8)
      a = GG(a, b, c, d, x[k + 9], S21, 0x21E1CDE6)
      d = GG(d, a, b, c, x[k + 14], S22, 0xC33707D6)
      c = GG(c, d, a, b, x[k + 3], S23, 0xF4D50D87)
      b = GG(b, c, d, a, x[k + 8], S24, 0x455A14ED)
      a = GG(a, b, c, d, x[k + 13], S21, 0xA9E3E905)
      d = GG(d, a, b, c, x[k + 2], S22, 0xFCEFA3F8)
      c = GG(c, d, a, b, x[k + 7], S23, 0x676F02D9)
      b = GG(b, c, d, a, x[k + 12], S24, 0x8D2A4C8A)
      a = HH(a, b, c, d, x[k + 5], S31, 0xFFFA3942)
      d = HH(d, a, b, c, x[k + 8], S32, 0x8771F681)
      c = HH(c, d, a, b, x[k + 11], S33, 0x6D9D6122)
      b = HH(b, c, d, a, x[k + 14], S34, 0xFDE5380C)
      a = HH(a, b, c, d, x[k + 1], S31, 0xA4BEEA44)
      d = HH(d, a, b, c, x[k + 4], S32, 0x4BDECFA9)
      c = HH(c, d, a, b, x[k + 7], S33, 0xF6BB4B60)
      b = HH(b, c, d, a, x[k + 10], S34, 0xBEBFBC70)
      a = HH(a, b, c, d, x[k + 13], S31, 0x289B7EC6)
      d = HH(d, a, b, c, x[k + 0], S32, 0xEAA127FA)
      c = HH(c, d, a, b, x[k + 3], S33, 0xD4EF3085)
      b = HH(b, c, d, a, x[k + 6], S34, 0x4881D05)
      a = HH(a, b, c, d, x[k + 9], S31, 0xD9D4D039)
      d = HH(d, a, b, c, x[k + 12], S32, 0xE6DB99E5)
      c = HH(c, d, a, b, x[k + 15], S33, 0x1FA27CF8)
      b = HH(b, c, d, a, x[k + 2], S34, 0xC4AC5665)
      a = II(a, b, c, d, x[k + 0], S41, 0xF4292244)
      d = II(d, a, b, c, x[k + 7], S42, 0x432AFF97)
      c = II(c, d, a, b, x[k + 14], S43, 0xAB9423A7)
      b = II(b, c, d, a, x[k + 5], S44, 0xFC93A039)
      a = II(a, b, c, d, x[k + 12], S41, 0x655B59C3)
      d = II(d, a, b, c, x[k + 3], S42, 0x8F0CCC92)
      c = II(c, d, a, b, x[k + 10], S43, 0xFFEFF47D)
      b = II(b, c, d, a, x[k + 1], S44, 0x85845DD1)
      a = II(a, b, c, d, x[k + 8], S41, 0x6FA87E4F)
      d = II(d, a, b, c, x[k + 15], S42, 0xFE2CE6E0)
      c = II(c, d, a, b, x[k + 6], S43, 0xA3014314)
      b = II(b, c, d, a, x[k + 13], S44, 0x4E0811A1)
      a = II(a, b, c, d, x[k + 4], S41, 0xF7537E82)
      d = II(d, a, b, c, x[k + 11], S42, 0xBD3AF235)
      c = II(c, d, a, b, x[k + 2], S43, 0x2AD7D2BB)
      b = II(b, c, d, a, x[k + 9], S44, 0xEB86D391)
      a = AddUnsigned(a, AA)
      b = AddUnsigned(b, BB)
      c = AddUnsigned(c, CC)
      d = AddUnsigned(d, DD)
      k += 16
    temp = WordToHex(a) + WordToHex(b) + WordToHex(c) + WordToHex(d)
    return temp.toLowerCase()
    
  $.extend
    MD5: MD5