md5-typed-array

JavaScript performance comparison

Revision 2 of this test case created by Tim Caswell

Preparation code

<script>
( // Module boilerplate to support browser globals, node.js and AMD.
  (typeof module !== "undefined" && function (m) { module.exports = m(); }) ||
  (typeof define === "function" && function (m) { define("other", m); }) ||
  (function (m) { window.other = m(); })
)(function () {

function md5cycle(x, k)
{
  var a = x[0],
    b = x[1],
    c = x[2],
    d = x[3];

  a = ff(a, b, c, d, k[0], 7, -680876936);
  d = ff(d, a, b, c, k[1], 12, -389564586);
  c = ff(c, d, a, b, k[2], 17, 606105819);
  b = ff(b, c, d, a, k[3], 22, -1044525330);
  a = ff(a, b, c, d, k[4], 7, -176418897);
  d = ff(d, a, b, c, k[5], 12, 1200080426);
  c = ff(c, d, a, b, k[6], 17, -1473231341);
  b = ff(b, c, d, a, k[7], 22, -45705983);
  a = ff(a, b, c, d, k[8], 7, 1770035416);
  d = ff(d, a, b, c, k[9], 12, -1958414417);
  c = ff(c, d, a, b, k[10], 17, -42063);
  b = ff(b, c, d, a, k[11], 22, -1990404162);
  a = ff(a, b, c, d, k[12], 7, 1804603682);
  d = ff(d, a, b, c, k[13], 12, -40341101);
  c = ff(c, d, a, b, k[14], 17, -1502002290);
  b = ff(b, c, d, a, k[15], 22, 1236535329);

  a = gg(a, b, c, d, k[1], 5, -165796510);
  d = gg(d, a, b, c, k[6], 9, -1069501632);
  c = gg(c, d, a, b, k[11], 14, 643717713);
  b = gg(b, c, d, a, k[0], 20, -373897302);
  a = gg(a, b, c, d, k[5], 5, -701558691);
  d = gg(d, a, b, c, k[10], 9, 38016083);
  c = gg(c, d, a, b, k[15], 14, -660478335);
  b = gg(b, c, d, a, k[4], 20, -405537848);
  a = gg(a, b, c, d, k[9], 5, 568446438);
  d = gg(d, a, b, c, k[14], 9, -1019803690);
  c = gg(c, d, a, b, k[3], 14, -187363961);
  b = gg(b, c, d, a, k[8], 20, 1163531501);
  a = gg(a, b, c, d, k[13], 5, -1444681467);
  d = gg(d, a, b, c, k[2], 9, -51403784);
  c = gg(c, d, a, b, k[7], 14, 1735328473);
  b = gg(b, c, d, a, k[12], 20, -1926607734);

  a = hh(a, b, c, d, k[5], 4, -378558);
  d = hh(d, a, b, c, k[8], 11, -2022574463);
  c = hh(c, d, a, b, k[11], 16, 1839030562);
  b = hh(b, c, d, a, k[14], 23, -35309556);
  a = hh(a, b, c, d, k[1], 4, -1530992060);
  d = hh(d, a, b, c, k[4], 11, 1272893353);
  c = hh(c, d, a, b, k[7], 16, -155497632);
  b = hh(b, c, d, a, k[10], 23, -1094730640);
  a = hh(a, b, c, d, k[13], 4, 681279174);
  d = hh(d, a, b, c, k[0], 11, -358537222);
  c = hh(c, d, a, b, k[3], 16, -722521979);
  b = hh(b, c, d, a, k[6], 23, 76029189);
  a = hh(a, b, c, d, k[9], 4, -640364487);
  d = hh(d, a, b, c, k[12], 11, -421815835);
  c = hh(c, d, a, b, k[15], 16, 530742520);
  b = hh(b, c, d, a, k[2], 23, -995338651);

  a = ii(a, b, c, d, k[0], 6, -198630844);
  d = ii(d, a, b, c, k[7], 10, 1126891415);
  c = ii(c, d, a, b, k[14], 15, -1416354905);
  b = ii(b, c, d, a, k[5], 21, -57434055);
  a = ii(a, b, c, d, k[12], 6, 1700485571);
  d = ii(d, a, b, c, k[3], 10, -1894986606);
  c = ii(c, d, a, b, k[10], 15, -1051523);
  b = ii(b, c, d, a, k[1], 21, -2054922799);
  a = ii(a, b, c, d, k[8], 6, 1873313359);
  d = ii(d, a, b, c, k[15], 10, -30611744);
  c = ii(c, d, a, b, k[6], 15, -1560198380);
  b = ii(b, c, d, a, k[13], 21, 1309151649);
  a = ii(a, b, c, d, k[4], 6, -145523070);
  d = ii(d, a, b, c, k[11], 10, -1120210379);
  c = ii(c, d, a, b, k[2], 15, 718787259);
  b = ii(b, c, d, a, k[9], 21, -343485551);

  x[0] = add32(a, x[0]);
  x[1] = add32(b, x[1]);
  x[2] = add32(c, x[2]);
  x[3] = add32(d, x[3]);

}

function cmn(q, a, b, x, s, t)
{
  a = add32(add32(a, q), add32(x, t));
  return add32((a << s) | (a >>> (32 - s)), b);
}

function ff(a, b, c, d, x, s, t)
{
  return cmn((b & c) | ((~b) & d), a, b, x, s, t);
}

function gg(a, b, c, d, x, s, t)
{
  return cmn((b & d) | (c & (~d)), a, b, x, s, t);
}

function hh(a, b, c, d, x, s, t)
{
  return cmn(b ^ c ^ d, a, b, x, s, t);
}

function ii(a, b, c, d, x, s, t)
{
  return cmn(c ^ (b | (~d)), a, b, x, s, t);
}

function md51(s)
{
  txt = '';
  var n = s.length,
    state = [1732584193, -271733879, -1732584194, 271733878],
    i;
  for (i = 64; i <= s.length; i += 64)
  {
    md5cycle(state, md5blk(s.substring(i - 64, i)));
  }
  s = s.substring(i - 64);
  var tail = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0];
  for (i = 0; i < s.length; i++)
  tail[i >> 2] |= s.charCodeAt(i) << ((i % 4) << 3);
  tail[i >> 2] |= 0x80 << ((i % 4) << 3);
  if (i > 55)
  {
    md5cycle(state, tail);
    for (i = 0; i < 16; i++) tail[i] = 0;
  }
  tail[14] = n * 8;
  md5cycle(state, tail);
  return state;
}

/* there needs to be support for Unicode here,
 * unless we pretend that we can redefine the MD-5
 * algorithm for multi-byte characters (perhaps
 * by adding every four 16-bit characters and
 * shortening the sum to 32 bits). Otherwise
 * I suggest performing MD-5 as if every character
 * was two bytes--e.g., 0040 0025 = @%--but then
 * how will an ordinary MD-5 sum be matched?
 * There is no way to standardize text to something
 * like UTF-8 before transformation; speed cost is
 * utterly prohibitive. The JavaScript standard
 * itself needs to look at this: it should start
 * providing access to strings as preformed UTF-8
 * 8-bit unsigned value arrays.
 */

function md5blk(s)
{ /* I figured global was faster.   */
  var md5blks = [],
    i; /* Andy King said do it this way. */
  for (i = 0; i < 64; i += 4)
  {
    md5blks[i >> 2] = s.charCodeAt(i) + (s.charCodeAt(i + 1) << 8) + (s.charCodeAt(i + 2) << 16) + (s.charCodeAt(i + 3) << 24);
  }
  return md5blks;
}

var hex_chr = '0123456789abcdef'.split('');

function rhex(n)
{
  var s = '',
    j = 0;
  for (; j < 4; j++)
  s += hex_chr[(n >> (j * 8 + 4)) & 0x0F] + hex_chr[(n >> (j * 8)) & 0x0F];
  return s;
}

function hex(x)
{
  for (var i = 0; i < x.length; i++)
  x[i] = rhex(x[i]);
  return x.join('');
}

function md5(s)
{
  return hex(md51(s));
}

/* this function is much faster,
so if possible we use it. Some IEs
are the only ones I know of that
need the idiotic second function,
generated by an if clause.  */


function add32(a, b)
{
  return (a + b) & 0xFFFFFFFF;
}

if (md5('hello') != '5d41402abc4b2a76b9719d911017c592')
{
  function add32(x, y)
  {
    var lsw = (x & 0xFFFF) + (y & 0xFFFF),
      msw = (x >> 16) + (y >> 16) + (lsw >> 16);
    return (msw << 16) | (lsw & 0xFFFF);
  }
}
return md5;
});

( // Module boilerplate to support browser globals, node.js and AMD.
  (typeof module !== "undefined" && function (m) { module.exports = m(); }) ||
  (typeof define === "function" && function (m) { define("md5", m); }) ||
  (function (m) { window.md5 = m(); })
)(function () {
  "use strict";

  // based on Alexander Peslyak's public domain MD5 C code
  // http://openwall.info/wiki/people/solar/software/public-domain-source-code/md5

  // The MD5 transformation for all four rounds.
  function common(a, b, m, k, s, f) {
    a += f + m + k;
    return ((a << s) | (a >>> (32 - s))) + b;
  }

  // The basic MD5 functions.
  // F and G are optimized from to their RFC 1321 definitions to use XOR.
  function F(a, b, c, d, m, k, s) { return common(a, b, m, k, s, d ^ (b & (c ^ d))); }
  function G(a, b, c, d, m, k, s) { return common(a, b, m, k, s, c ^ (d & (b ^ c))); }
  function H(a, b, c, d, m, k, s) { return common(a, b, m, k, s, b ^ c ^ d); }
  function I(a, b, c, d, m, k, s) { return common(a, b, m, k, s, c ^ (b | ~d)); }

  function cycle(state, block) {
    var a = state[0],
        b = state[1],
        c = state[2],
        d = state[3];

      a = F(a, b, c, d, block[0],  0xd76aa478, 7);
      d = F(d, a, b, c, block[1],  0xe8c7b756, 12);
      c = F(c, d, a, b, block[2],  0x242070db, 17);
      b = F(b, c, d, a, block[3],  0xc1bdceee, 22);
      a = F(a, b, c, d, block[4],  0xf57c0faf, 7);
      d = F(d, a, b, c, block[5],  0x4787c62a, 12);
      c = F(c, d, a, b, block[6],  0xa8304613, 17);
      b = F(b, c, d, a, block[7],  0xfd469501, 22);
      a = F(a, b, c, d, block[8],  0x698098d8, 7);
      d = F(d, a, b, c, block[9],  0x8b44f7af, 12);
      c = F(c, d, a, b, block[10], 0xffff5bb1, 17);
      b = F(b, c, d, a, block[11], 0x895cd7be, 22);
      a = F(a, b, c, d, block[12], 0x6b901122, 7);
      d = F(d, a, b, c, block[13], 0xfd987193, 12);
      c = F(c, d, a, b, block[14], 0xa679438e, 17);
      b = F(b, c, d, a, block[15], 0x49b40821, 22);

      a = G(a, b, c, d, block[1],  0xf61e2562, 5);
      d = G(d, a, b, c, block[6],  0xc040b340, 9);
      c = G(c, d, a, b, block[11], 0x265e5a51, 14);
      b = G(b, c, d, a, block[0],  0xe9b6c7aa, 20);
      a = G(a, b, c, d, block[5],  0xd62f105d, 5);
      d = G(d, a, b, c, block[10], 0x02441453, 9);
      c = G(c, d, a, b, block[15], 0xd8a1e681, 14);
      b = G(b, c, d, a, block[4],  0xe7d3fbc8, 20);
      a = G(a, b, c, d, block[9],  0x21e1cde6, 5);
      d = G(d, a, b, c, block[14], 0xc33707d6, 9);
      c = G(c, d, a, b, block[3],  0xf4d50d87, 14);
      b = G(b, c, d, a, block[8],  0x455a14ed, 20);
      a = G(a, b, c, d, block[13], 0xa9e3e905, 5);
      d = G(d, a, b, c, block[2],  0xfcefa3f8, 9);
      c = G(c, d, a, b, block[7],  0x676f02d9, 14);
      b = G(b, c, d, a, block[12], 0x8d2a4c8a, 20);

      a = H(a, b, c, d, block[5],  0xfffa3942, 4);
      d = H(d, a, b, c, block[8],  0x8771f681, 11);
      c = H(c, d, a, b, block[11], 0x6d9d6122, 16);
      b = H(b, c, d, a, block[14], 0xfde5380c, 23);
      a = H(a, b, c, d, block[1],  0xa4beea44, 4);
      d = H(d, a, b, c, block[4],  0x4bdecfa9, 11);
      c = H(c, d, a, b, block[7],  0xf6bb4b60, 16);
      b = H(b, c, d, a, block[10], 0xbebfbc70, 23);
      a = H(a, b, c, d, block[13], 0x289b7ec6, 4);
      d = H(d, a, b, c, block[0],  0xeaa127fa, 11);
      c = H(c, d, a, b, block[3],  0xd4ef3085, 16);
      b = H(b, c, d, a, block[6],  0x04881d05, 23);
      a = H(a, b, c, d, block[9],  0xd9d4d039, 4);
      d = H(d, a, b, c, block[12], 0xe6db99e5, 11);
      c = H(c, d, a, b, block[15], 0x1fa27cf8, 16);
      b = H(b, c, d, a, block[2],  0xc4ac5665, 23);

      a = I(a, b, c, d, block[0],  0xf4292244, 6);
      d = I(d, a, b, c, block[7],  0x432aff97, 10);
      c = I(c, d, a, b, block[14], 0xab9423a7, 15);
      b = I(b, c, d, a, block[5],  0xfc93a039, 21);
      a = I(a, b, c, d, block[12], 0x655b59c3, 6);
      d = I(d, a, b, c, block[3],  0x8f0ccc92, 10);
      c = I(c, d, a, b, block[10], 0xffeff47d, 15);
      b = I(b, c, d, a, block[1],  0x85845dd1, 21);
      a = I(a, b, c, d, block[8],  0x6fa87e4f, 6);
      d = I(d, a, b, c, block[15], 0xfe2ce6e0, 10);
      c = I(c, d, a, b, block[6],  0xa3014314, 15);
      b = I(b, c, d, a, block[13], 0x4e0811a1, 21);
      a = I(a, b, c, d, block[4],  0xf7537e82, 6);
      d = I(d, a, b, c, block[11], 0xbd3af235, 10);
      c = I(c, d, a, b, block[2],  0x2ad7d2bb, 15);
      b = I(b, c, d, a, block[9],  0xeb86d391, 21);

      state[0] += a;
      state[1] += b;
      state[2] += c;
      state[3] += d;
  }

  var block = new Uint32Array(16);
  var bblock = new Uint8Array(block.buffer);
  var state = new Uint32Array(4);
  var bstate = new Uint8Array(state.buffer);

  // Process a one or more 512-bit chunks of data.
  // Expects an array-like value as input.
  function md5(data) {
    var dataLength = data.length;

    // Pad the input string.
    var length = dataLength + 9;
    length += 64 - (length % 64);

    state[0] = 0x67452301;
    state[1] = 0xefcdab89;
    state[2] = 0x98badcfe;
    state[3] = 0x10325476;

    for (var offset = 0; offset < length; offset += 64) {
      for (var i = 0; i < 64; i++) {
        var o = offset + i;
        if (o < dataLength) {
          bblock[i] = data[i];
          continue;
        }
        if (o === dataLength) {
          bblock[i] = 0x80;
          continue;
        }
        var x = o - length + 8;
        if (x >= 0 && x < 4) {
          bblock[i] = (dataLength << 3 >>> (x * 8)) & 0xff;
          continue;
        }
        bblock[i] = 0;
      }
      cycle(state, block);
    }

    return bstate;

  }

  return md5;
});

  // Convert a JS string into a UTF-8 encoded byte array.
  function stringToBuffer(string) {
    // Convert the unicode string to be the ASCII representation of
    // the UTF-8 bytes.
    string = unescape(encodeURIComponent(string));
    var length = string.length;
    var buf = new Uint8Array(length);
    for (var i = 0; i < length; i++) {
      buf[i] = string.charCodeAt(i);
    }
    return buf;
  }
</script>
<script>
Benchmark.prototype.setup = function() {
    input = stringToBuffer("Hello World\n");
   
};
</script>

Test runner

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Testing in unknown unknown
Test Ops/sec
md5
output = md5(input);
pending…
md5-other
output = other("Hello World\n");
pending…

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