text: 
  (function ($) {
      'use strict';
  
      /*
      * 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),
              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));
      }
  
      /*
      * 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 MD5 of an array of little-endian words, and a bit length.
      */
      function binl_md5(x, len) {
          /* append padding */
          x[len >> 5] |= 0x80 << (len % 32);
          x[(((len + 64) >>> 9) << 4) + 14] = len;
  
          var i, olda, oldb, oldc, oldd,
              a =  1732584193,
              b = -271733879,
              c = -1732584194,
              d =  271733878;
  
          for (i = 0; i < x.length; i += 16) {
              olda = a;
              oldb = b;
              oldc = c;
              oldd = d;
  
              a = md5_ff(a, b, c, d, x[i],       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],      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],      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],       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];
      }
  
      /*
      * Convert an array of little-endian words to a string
      */
      function binl2rstr(input) {
          var i,
              output = '';
          for (i = 0; i < input.length * 32; i += 8) {
              output += String.fromCharCode((input[i >> 5] >>> (i % 32)) & 0xFF);
          }
          return output;
      }
  
      /*
      * Convert a raw string to an array of little-endian words
      * Characters >255 have their high-byte silently ignored.
      */
      function rstr2binl(input) {
          var i,
              output = [];
          output[(input.length >> 2) - 1] = undefined;
          for (i = 0; i < output.length; i += 1) {
              output[i] = 0;
          }
          for (i = 0; i < input.length * 8; i += 8) {
              output[i >> 5] |= (input.charCodeAt(i / 8) & 0xFF) << (i % 32);
          }
          return output;
      }
  
      /*
      * Calculate the MD5 of a raw string
      */
      function rstr_md5(s) {
          return binl2rstr(binl_md5(rstr2binl(s), s.length * 8));
      }
  
      /*
      * Calculate the HMAC-MD5, of a key and some data (raw strings)
      */
      function rstr_hmac_md5(key, data) {
          var i,
              bkey = rstr2binl(key),
              ipad = [],
              opad = [],
              hash;
          ipad[15] = opad[15] = undefined;
          if (bkey.length > 16) {
              bkey = binl_md5(bkey, key.length * 8);
          }
          for (i = 0; i < 16; i += 1) {
              ipad[i] = bkey[i] ^ 0x36363636;
              opad[i] = bkey[i] ^ 0x5C5C5C5C;
          }
          hash = binl_md5(ipad.concat(rstr2binl(data)), 512 + data.length * 8);
          return binl2rstr(binl_md5(opad.concat(hash), 512 + 128));
      }
  
      /*
      * Convert a raw string to a hex string
      */
      function rstr2hex(input) {
          var hex_tab = '0123456789abcdef',
              output = '',
              x,
              i;
          for (i = 0; i < input.length; i += 1) {
              x = input.charCodeAt(i);
              output += hex_tab.charAt((x >>> 4) & 0x0F) +
                  hex_tab.charAt(x & 0x0F);
          }
          return output;
      }
  
      /*
      * Encode a string as utf-8
      */
      function str2rstr_utf8(input) {
          return unescape(encodeURIComponent(input));
      }
  
      /*
      * Take string arguments and return either raw or hex encoded strings
      */
      function raw_md5(s) {
          return rstr_md5(str2rstr_utf8(s));
      }
      function hex_md5(s) {
          return rstr2hex(raw_md5(s));
      }
      function raw_hmac_md5(k, d) {
          return rstr_hmac_md5(str2rstr_utf8(k), str2rstr_utf8(d));
      }
      function hex_hmac_md5(k, d) {
          return rstr2hex(raw_hmac_md5(k, d));
      }
  
      function md5(string, key, raw) {
          if (!key) {
              if (!raw) {
                  return hex_md5(string);
              }
              return raw_md5(string);
          }
          if (!raw) {
              return hex_hmac_md5(key, string);
          }
          return raw_hmac_md5(key, string);
      }
  
      if (typeof define === 'function' && define.amd) {
          define(function () {
              return md5;
          });
      } else {
          $.md5 = md5;
      }
  }(this));
  