function md5(args) {

    function hex_md5(s) {

        return binl2hex(core_md5(str2binl(s), s.length * chrsz))

    }

    function core_md5(x, len) {

        x[len >> 5] |= 128 << len % 32,

        x[14 + (len + 64 >>> 9 << 4)] = len;

        for (var a = 1732584193, b = -271733879, c = -1732584194, d = 271733878, i = 0; i < x.length; i += 16) {

            var 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)

    }

    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)

    }

    function safe_add(x, y) {

        var lsw = (65535 & x) + (65535 & y);

        return (x >> 16) + (y >> 16) + (lsw >> 16) << 16 | 65535 & lsw

    }

    function bit_rol(num, cnt) {

        return num << cnt | num >>> 32 - cnt

    }

    function str2binl(str) {

        for (var bin = Array(), mask = (1 << chrsz) - 1, i = 0; i < str.length * chrsz; i += chrsz)

            bin[i >> 5] |= (str.charCodeAt(i / chrsz) & mask) << i % 32;

        return bin

    }

    function binl2hex(binarray) {

        for (var hex_tab = hexcase ? "0123456789ABCDEF" : "0123456789abcdef", str = "", i = 0; i < 4 * binarray.length; i++)

            str += hex_tab.charAt(binarray[i >> 2] >> i % 4 * 8 + 4 & 15) + hex_tab.charAt(binarray[i >> 2] >> i % 4 * 8 & 15);

        return str

    }

    var hexcase = 0

      , chrsz = 8;

    return hex_md5(args)

}

console.log(md5(''))