text: /*
  * Copyright (C) 2012-2015 Doubango Telecom <http://www.doubango.org>
  * License: BSD
  * This file is part of Open Source sipML5 solution <http://www.sipml5.org>
  */
  /*
   * 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.
   */
  
  var MD5 = (function () {
      /*
       * Configurable variables. You may need to tweak these to be compatible with
       * the server-side, but the defaults work in most cases.
       */
      var hexcase = 0;  /* 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 */
  
      /*
       * Add integers, wrapping at 2^32. This uses 16-bit operations internally
       * to work around bugs in some JS interpreters.
       */
      var safe_add = function (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.
       */
      var bit_rol = function (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.
       */
      var str2binl = function (str) {
          var bin = [];
          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
       */
      var binl2str = function (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.
       */
      var binl2hex = function (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
       */
      var binl2b64 = function (binarray) {
          var tab = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
          var str = "";
          var triplet, j;
          for(var i = 0; i < binarray.length * 4; i += 3)
          {
              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(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;
      };
  
      /*
       * These functions implement the four basic operations the algorithm uses.
       */
      var md5_cmn = function (q, a, b, x, s, t) {
          return safe_add(bit_rol(safe_add(safe_add(a, q),safe_add(x, t)), s),b);
      };
  
      var md5_ff = function (a, b, c, d, x, s, t) {
          return md5_cmn((b & c) | ((~b) & d), a, b, x, s, t);
      };
  
      var md5_gg = function (a, b, c, d, x, s, t) {
          return md5_cmn((b & d) | (c & (~d)), a, b, x, s, t);
      };
  
      var md5_hh = function (a, b, c, d, x, s, t) {
          return md5_cmn(b ^ c ^ d, a, b, x, s, t);
      };
  
      var md5_ii = function (a, b, c, d, x, s, t) {
          return md5_cmn(c ^ (b | (~d)), a, b, x, s, t);
      };
  
      /*
       * Calculate the MD5 of an array of little-endian words, and a bit length
       */
      var core_md5 = function (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;
  
          var olda, oldb, oldc, oldd;
          for (var i = 0; i < x.length; i += 16)
          {
              olda = a;
              oldb = b;
              oldc = c;
              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 [a, b, c, d];
      };
  
  
      /*
       * Calculate the HMAC-MD5, of a key and some data
       */
      var core_hmac_md5 = function (key, data) {
          var bkey = str2binl(key);
          if(bkey.length > 16) { bkey = core_md5(bkey, key.length * chrsz); }
  
          var ipad = new Array(16), opad = new 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);
      };
  
      var obj = {
          /*
           * These are the functions you'll usually want to call.
           * They take string arguments and return either hex or base-64 encoded
           * strings.
           */
          hexdigest: function (s) {
              return binl2hex(core_md5(str2binl(s), s.length * chrsz));
          },
  
          b64digest: function (s) {
              return binl2b64(core_md5(str2binl(s), s.length * chrsz));
          },
  
          hash: function (s) {
              return binl2str(core_md5(str2binl(s), s.length * chrsz));
          },
  
          hmac_hexdigest: function (key, data) {
              return binl2hex(core_hmac_md5(key, data));
          },
  
          hmac_b64digest: function (key, data) {
              return binl2b64(core_hmac_md5(key, data));
          },
  
          hmac_hash: function (key, data) {
              return binl2str(core_hmac_md5(key, data));
          },
  
          /*
           * Perform a simple self-test to see if the VM is working
           */
          test: function () {
              return MD5.hexdigest("abc") === "900150983cd24fb0d6963f7d28e17f72";
          }
      };
  
      return obj;
  })();
  