text: /*
   * A JavaScript implementation of the RSA Data Security, Inc. MD5 Message
   * Digest Algorithm, as defined in RFC 1321.
   * Version 2.1 Copyright (C) Paul Johnston 1999 - 2002.
   * Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet
   * Distributed under the BSD License
   * See http://pajhome.org.uk/crypt/md5 for more info.
   */
  
  /*
   * Configurable variables. You may need to tweak these to be compatible with
   * the server-side, but the defaults work in most cases.
   */
  var hexcase = 1   /* hex output format. 0 - lowercase  1 - uppercase        */
  var b64pad  = ''  /* base-64 pad character. "=" for strict RFC compliance   */
  var chrsz   = 8   /* bits per input character. 8 - ASCII  16 - Unicode      */
  
  /*
   * These are the functions you'll usually want to call
   * They take string arguments and return either hex or base-64 encoded strings
   */
  
  export function hex_md5(s){ return binl2hex(core_md5(str2binl(s), s.length * chrsz)) }
  function b64_md5(s){ return binl2b64(core_md5(str2binl(s), s.length * chrsz)) }
  function str_md5(s){ return binl2str(core_md5(str2binl(s), s.length * chrsz)) }
  function hex_hmac_md5(key, data) { return binl2hex(core_hmac_md5(key, data))  }
  function b64_hmac_md5(key, data) { return binl2b64(core_hmac_md5(key, data))  }
  function str_hmac_md5(key, data) { return binl2str(core_hmac_md5(key, data))  }
  
  /*
   * Perform a simple self-test to see if the VM is working
   */
  function md5_vm_test()
  {
    return hex_md5('abc') == '900150983cd24fb0d6963f7d28e17f72' 
  }
  
  /*
   * Calculate the MD5 of an array of little-endian words, and a bit length
   */
  function core_md5(x, len)
  {
    /* append padding */
    x[len >> 5] |= 0x80 << ((len) % 32) 
    x[(((len + 64) >>> 9) << 4) + 14] = len 
  
    var a =  1732584193 
    var b = -271733879 
    var c = -1732584194 
    var d =  271733878 
  
    for(var i = 0 ; i < x.length ; i += 16)
    {
      var olda = a 
      var oldb = b 
      var oldc = c 
      var oldd = d 
  
      a = md5_ff(a, b, c, d, x[i+ 0], 7 , -680876936) 
      d = md5_ff(d, a, b, c, x[i+ 1], 12, -389564586) 
      c = md5_ff(c, d, a, b, x[i+ 2], 17,  606105819) 
      b = md5_ff(b, c, d, a, x[i+ 3], 22, -1044525330) 
      a = md5_ff(a, b, c, d, x[i+ 4], 7 , -176418897) 
      d = md5_ff(d, a, b, c, x[i+ 5], 12,  1200080426) 
      c = md5_ff(c, d, a, b, x[i+ 6], 17, -1473231341) 
      b = md5_ff(b, c, d, a, x[i+ 7], 22, -45705983) 
      a = md5_ff(a, b, c, d, x[i+ 8], 7 ,  1770035416) 
      d = md5_ff(d, a, b, c, x[i+ 9], 12, -1958414417) 
      c = md5_ff(c, d, a, b, x[i+10], 17, -42063) 
      b = md5_ff(b, c, d, a, x[i+11], 22, -1990404162) 
      a = md5_ff(a, b, c, d, x[i+12], 7 ,  1804603682) 
      d = md5_ff(d, a, b, c, x[i+13], 12, -40341101) 
      c = md5_ff(c, d, a, b, x[i+14], 17, -1502002290) 
      b = md5_ff(b, c, d, a, x[i+15], 22,  1236535329) 
  
      a = md5_gg(a, b, c, d, x[i+ 1], 5 , -165796510) 
      d = md5_gg(d, a, b, c, x[i+ 6], 9 , -1069501632) 
      c = md5_gg(c, d, a, b, x[i+11], 14,  643717713) 
      b = md5_gg(b, c, d, a, x[i+ 0], 20, -373897302) 
      a = md5_gg(a, b, c, d, x[i+ 5], 5 , -701558691) 
      d = md5_gg(d, a, b, c, x[i+10], 9 ,  38016083) 
      c = md5_gg(c, d, a, b, x[i+15], 14, -660478335) 
      b = md5_gg(b, c, d, a, x[i+ 4], 20, -405537848) 
      a = md5_gg(a, b, c, d, x[i+ 9], 5 ,  568446438) 
      d = md5_gg(d, a, b, c, x[i+14], 9 , -1019803690) 
      c = md5_gg(c, d, a, b, x[i+ 3], 14, -187363961) 
      b = md5_gg(b, c, d, a, x[i+ 8], 20,  1163531501) 
      a = md5_gg(a, b, c, d, x[i+13], 5 , -1444681467) 
      d = md5_gg(d, a, b, c, x[i+ 2], 9 , -51403784) 
      c = md5_gg(c, d, a, b, x[i+ 7], 14,  1735328473) 
      b = md5_gg(b, c, d, a, x[i+12], 20, -1926607734) 
  
      a = md5_hh(a, b, c, d, x[i+ 5], 4 , -378558) 
      d = md5_hh(d, a, b, c, x[i+ 8], 11, -2022574463) 
      c = md5_hh(c, d, a, b, x[i+11], 16,  1839030562) 
      b = md5_hh(b, c, d, a, x[i+14], 23, -35309556) 
      a = md5_hh(a, b, c, d, x[i+ 1], 4 , -1530992060) 
      d = md5_hh(d, a, b, c, x[i+ 4], 11,  1272893353) 
      c = md5_hh(c, d, a, b, x[i+ 7], 16, -155497632) 
      b = md5_hh(b, c, d, a, x[i+10], 23, -1094730640) 
      a = md5_hh(a, b, c, d, x[i+13], 4 ,  681279174) 
      d = md5_hh(d, a, b, c, x[i+ 0], 11, -358537222) 
      c = md5_hh(c, d, a, b, x[i+ 3], 16, -722521979) 
      b = md5_hh(b, c, d, a, x[i+ 6], 23,  76029189) 
      a = md5_hh(a, b, c, d, x[i+ 9], 4 , -640364487) 
      d = md5_hh(d, a, b, c, x[i+12], 11, -421815835) 
      c = md5_hh(c, d, a, b, x[i+15], 16,  530742520) 
      b = md5_hh(b, c, d, a, x[i+ 2], 23, -995338651) 
  
      a = md5_ii(a, b, c, d, x[i+ 0], 6 , -198630844) 
      d = md5_ii(d, a, b, c, x[i+ 7], 10,  1126891415) 
      c = md5_ii(c, d, a, b, x[i+14], 15, -1416354905) 
      b = md5_ii(b, c, d, a, x[i+ 5], 21, -57434055) 
      a = md5_ii(a, b, c, d, x[i+12], 6 ,  1700485571) 
      d = md5_ii(d, a, b, c, x[i+ 3], 10, -1894986606) 
      c = md5_ii(c, d, a, b, x[i+10], 15, -1051523) 
      b = md5_ii(b, c, d, a, x[i+ 1], 21, -2054922799) 
      a = md5_ii(a, b, c, d, x[i+ 8], 6 ,  1873313359) 
      d = md5_ii(d, a, b, c, x[i+15], 10, -30611744) 
      c = md5_ii(c, d, a, b, x[i+ 6], 15, -1560198380) 
      b = md5_ii(b, c, d, a, x[i+13], 21,  1309151649) 
      a = md5_ii(a, b, c, d, x[i+ 4], 6 , -145523070) 
      d = md5_ii(d, a, b, c, x[i+11], 10, -1120210379) 
      c = md5_ii(c, d, a, b, x[i+ 2], 15,  718787259) 
      b = md5_ii(b, c, d, a, x[i+ 9], 21, -343485551) 
  
      a = safe_add(a, olda) 
      b = safe_add(b, oldb) 
      c = safe_add(c, oldc) 
      d = safe_add(d, oldd) 
    }
    return Array(a, b, c, d) 
  
  }
  
  /*
   * These functions implement the four basic operations the algorithm uses.
   */
  function md5_cmn(q, a, b, x, s, t)
  {
    return safe_add(bit_rol(safe_add(safe_add(a, q), safe_add(x, t)), s),b) 
  }
  function md5_ff(a, b, c, d, x, s, t)
  {
    return md5_cmn((b & c) | ((~b) & d), a, b, x, s, t) 
  }
  function md5_gg(a, b, c, d, x, s, t)
  {
    return md5_cmn((b & d) | (c & (~d)), a, b, x, s, t) 
  }
  function md5_hh(a, b, c, d, x, s, t)
  {
    return md5_cmn(b ^ c ^ d, a, b, x, s, t) 
  }
  function md5_ii(a, b, c, d, x, s, t)
  {
    return md5_cmn(c ^ (b | (~d)), a, b, x, s, t) 
  }
  
  /*
   * Calculate the HMAC-MD5, of a key and some data
   */
  function core_hmac_md5(key, data)
  {
    var bkey = str2binl(key) 
    if(bkey.length > 16) bkey = core_md5(bkey, key.length * chrsz) 
  
    var ipad = Array(16), opad = Array(16) 
    for(var i = 0 ; i < 16 ; i++)
    {
      ipad[i] = bkey[i] ^ 0x36363636 
      opad[i] = bkey[i] ^ 0x5C5C5C5C 
    }
  
    var hash = core_md5(ipad.concat(str2binl(data)), 512 + data.length * chrsz) 
    return core_md5(opad.concat(hash), 512 + 128) 
  }
  
  /*
   * Add integers, wrapping at 2^32. This uses 16-bit operations internally
   * to work around bugs in some JS interpreters.
   */
  function safe_add(x, y)
  {
    var lsw = (x & 0xFFFF) + (y & 0xFFFF) 
    var msw = (x >> 16) + (y >> 16) + (lsw >> 16) 
    return (msw << 16) | (lsw & 0xFFFF) 
  }
  
  /*
   * Bitwise rotate a 32-bit number to the left.
   */
  function bit_rol(num, cnt)
  {
    return (num << cnt) | (num >>> (32 - cnt)) 
  }
  
  /*
   * Convert a string to an array of little-endian words
   * If chrsz is ASCII, characters >255 have their hi-byte silently ignored.
   */
  function str2binl(str)
  {
    var bin = Array() 
    var mask = (1 << chrsz) - 1 
    for(var i = 0 ; i < str.length * chrsz ; i += chrsz)
      bin[i>>5] |= (str.charCodeAt(i / chrsz) & mask) << (i%32) 
    return bin 
  }
  
  /*
   * Convert an array of little-endian words to a string
   */
  function binl2str(bin)
  {
    var str = '' 
    var mask = (1 << chrsz) - 1 
    for(var i = 0 ; i < bin.length * 32 ; i += chrsz)
      str += String.fromCharCode((bin[i>>5] >>> (i % 32)) & mask) 
    return str 
  }
  
  /*
   * Convert an array of little-endian words to a hex string.
   */
  function binl2hex(binarray)
  {
    var hex_tab = hexcase ? '0123456789ABCDEF' : '0123456789abcdef' 
    var str = '' 
    for(var i = 0 ; i < binarray.length * 4 ; i++)
    {
      str += hex_tab.charAt((binarray[i>>2] >> ((i%4)*8+4)) & 0xF) +
             hex_tab.charAt((binarray[i>>2] >> ((i%4)*8  )) & 0xF) 
    }
    return str 
  }
  
  /*
   * Convert an array of little-endian words to a base-64 string
   */
  function binl2b64(binarray)
  {
    var tab = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/' 
    var str = '' 
    for(var i = 0 ; i < binarray.length * 4 ; i += 3)
    {
      var triplet = (((binarray[i   >> 2] >> 8 * ( i   %4)) & 0xFF) << 16)
                  | (((binarray[i+1 >> 2] >> 8 * ((i+1)%4)) & 0xFF) << 8 )
                  |  ((binarray[i+2 >> 2] >> 8 * ((i+2)%4)) & 0xFF) 
      for(var j = 0 ; j < 4 ; j++)
      {
        if(i * 8 + j * 6 > binarray.length * 32) str += b64pad 
        else str += tab.charAt((triplet >> 6*(3-j)) & 0x3F) 
      }
    }
    return str 
  }
  