docs: function(options) {
        /**
         * Private config properties. You may need to tweak these to be compatible with
         * the server-side, but the defaults work in most cases.
         * See {@link Hashes.MD5#method-setUpperCase} and {@link Hashes.SHA1#method-setUpperCase}
         */
        var hexcase = (options && typeof options.uppercase === 'boolean') ? options.uppercase : false, // hexadecimal output case format. false - lowercase; true - uppercase
          b64pad = (options && typeof options.pad === 'string') ? options.pad : '=', // base-64 pad character. Defaults to '=' for strict RFC compliance
          utf8 = (options && typeof options.utf8 === 'boolean') ? options.utf8 : true; // enable/disable utf8 encoding
  
        // privileged (public) methods
        this.hex = function(s) {
          return rstr2hex(rstr(s, utf8), hexcase);
        };
        this.b64 = function(s) {
          return rstr2b64(rstr(s), b64pad);
        };
        this.any = function(s, e) {
          return rstr2any(rstr(s, utf8), e);
        };
        this.raw = function(s) {
          return rstr(s, utf8);
        };
        this.hex_hmac = function(k, d) {
          return rstr2hex(rstr_hmac(k, d), hexcase);
        };
        this.b64_hmac = function(k, d) {
          return rstr2b64(rstr_hmac(k, d), b64pad);
        };
        this.any_hmac = function(k, d, e) {
          return rstr2any(rstr_hmac(k, d), e);
        };
        /**
         * Perform a simple self-test to see if the VM is working
         * @return {String} Hexadecimal hash sample
         */
        this.vm_test = function() {
          return hex('abc').toLowerCase() === '900150983cd24fb0d6963f7d28e17f72';
        };
        /**
         * Enable/disable uppercase hexadecimal returned string
         * @param {Boolean}
         * @return {Object} this
         */
        this.setUpperCase = function(a) {
          if (typeof a === 'boolean') {
            hexcase = a;
          }
          return this;
        };
        /**
         * Defines a base64 pad string
         * @param {String} Pad
         * @return {Object} this
         */
        this.setPad = function(a) {
          b64pad = a || b64pad;
          return this;
        };
        /**
         * Defines a base64 pad string
         * @param {Boolean}
         * @return {Object} [this]
         */
        this.setUTF8 = function(a) {
          if (typeof a === 'boolean') {
            utf8 = a;
          }
          return this;
        };
  
        // private methods
  
        /**
         * Calculate the MD5 of a raw string
         */
  
        function rstr(s) {
          s = (utf8) ? utf8Encode(s) : s;
          return binl2rstr(binl(rstr2binl(s), s.length * 8));
        }
  
        /**
         * Calculate the HMAC-MD5, of a key and some data (raw strings)
         */
  
        function rstr_hmac(key, data) {
          var bkey, ipad, opad, hash, i;
  
          key = (utf8) ? utf8Encode(key) : key;
          data = (utf8) ? utf8Encode(data) : data;
          bkey = rstr2binl(key);
          if (bkey.length > 16) {
            bkey = binl(bkey, key.length * 8);
          }
  
          ipad = Array(16), opad = Array(16);
          for (i = 0; i < 16; i += 1) {
            ipad[i] = bkey[i] ^ 0x36363636;
            opad[i] = bkey[i] ^ 0x5C5C5C5C;
          }
          hash = binl(ipad.concat(rstr2binl(data)), 512 + data.length * 8);
          return binl2rstr(binl(opad.concat(hash), 512 + 128));
        }
  
        /**
         * Calculate the MD5 of an array of little-endian words, and a bit length.
         */
  
        function binl(x, len) {
          var i, olda, oldb, oldc, oldd,
            a = 1732584193,
            b = -271733879,
            c = -1732584194,
            d = 271733878;
  
          /* append padding */
          x[len >> 5] |= 0x80 << ((len) % 32);
          x[(((len + 64) >>> 9) << 4) + 14] = len;
  
          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 + 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);
        }
      }