fastest MD5 Implementation in JavaScript

Question

There are many MD5 JavaScript implementations out there   Does anybody know which one is the most advanced  most bugfixed and fastest    I need it for this tool

User · Answer

js-md5 supports UTF-8 string  array  ArrayBuffer  AMD      and fast  jsperf

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If the performance of your application is limited by a Javascript implementation of MD5  then you re really doing something wrong  Consider an architectural change  Hint  use MD5 less often

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I ve heard Joseph s Myers implementation is quite fast  Additionally  he has a lengthy article on Javascript optimization describing what he learned while writing his implementation  It s a good read for anyone interested in performant javascript   http   www webreference com programming javascript jkm3   His MD5 implementation can be found here

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Currently the fastest implementation of md5  based on Joseph Myers  code    https   github com iReal FastMD5  jsPerf comparaison  http   jsperf com md5-shootout 63

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I found a number of articles on this subject  They all suggested Joseph Meyers implementation   see  http   jsperf com md5-shootout on some tests  in My quest for the ultimate speed i looked at this code  an i saw that it could be improved  So i created a new JS script based on the Joseph Meyers code   see Improved Jospeh Meyers code

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Node js has built-in support  const crypto   require  crypto   crypto createHash  md5   update  hello world   digest  hex     Code snippet above computes MD5 hex string for string hello world  The advantage of this solution is you don t need to install additional library   I think built in solution should be the fastest  If not  we should create issue PR for the Node js project

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I would suggest you use CryptoJS in this case   Basically CryptoJS is a growing collection of standard and secure cryptographic algorithms implemented in JavaScript using best practices and patterns  They are fast  and they have a consistent and simple interface   So if you want to calculate the MD5 hash of your password string then do as follows    lt script src  https   cdnjs cloudflare com ajax libs crypto-js 3 1 9-1 core js  gt  lt  script gt   lt script src  https   cdnjs cloudflare com ajax libs crypto-js 3 1 9-1 md5 js  gt  lt  script gt   lt script gt      var passhash   CryptoJS MD5 password  toString           post         includes login php            user  username  pass  passhash          onLogin          json      lt  script gt    So this script will post the hash of your password string to the server   For further info and support on other hash calculating algorithms you can visit   http   code google com p crypto-js

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Why not try http   phpjs org functions md5    Unfortunately performance is limited with any emulated script  however this can render real md5 hash   Although I would advice against using md5 for passwords  as it is a fast-rendered hash

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Maybe this package was useful https   www npmjs com package pure-md5   x000D   x000D  console time  latin    x000D  const latin   md5  hello    x000D  console timeEnd  latin    x000D   x000D  console log             md5             x000D  console log        md5        x000D   lt script src  https   unpkg com pure-md5 latest lib index js  gt  lt  script gt  x000D   x000D   x000D

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Much faster hashing should be possible by calculating on graphic card  implement hashing algorithm in WebGL   as discussed there about SHA256  Is it possible to calculate sha256 hashes in the browser using the user  39 s video card  eg  by using WebGL or Flash

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I wrote tests to compare several JavaScript hash implementations  including most MD5 implementations mentioned here  To run the tests  go to http   brillout github io test-javascript-hash-implementations  and wait a bit   It seems that the YaMD5 implementation of R  Hill s answer is the fastest

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x000D   x000D  MD5   function e    x000D      function h a  b    x000D          var c  d  e  f  g  x000D          e   a  amp  2147483648  x000D          f   b  amp  2147483648  x000D          c   a  amp  1073741824  x000D          d   b  amp  1073741824  x000D          g    a  amp  1073741823     b  amp  1073741823   x000D          return c  amp  d   g   2147483648   e   f   c   d   g  amp  1073741824   g   3221225472   e   f   g   1073741824   e   f   g   e   f x000D        x000D   x000D      function k a  b  c  d  e  f  g    x000D          a   h a  h h b  amp  c    b  amp  d  e   g    x000D          return h a  lt  lt  f   a  gt  gt  gt  32 - f  b  x000D        x000D   x000D      function l a  b  c  d  e  f  g    x000D          a   h a  h h b  amp  d   c  amp   d  e   g    x000D          return h a  lt  lt  f   a  gt  gt  gt  32 - f  b  x000D        x000D   x000D      function m a  b  d  c  e  f  g    x000D          a   h a  h h b   d   c  e   g    x000D          return h a  lt  lt  f   a  gt  gt  gt  32 - f  b  x000D        x000D   x000D      function n a  b  d  c  e  f  g    x000D          a   h a  h h d    b    c   e   g    x000D          return h a  lt  lt  f   a  gt  gt  gt  32 - f  b  x000D        x000D   x000D      function p a    x000D          var b       x000D              d       x000D              c  x000D          for  c   0  3  gt   c  c    d   a  gt  gt  gt  8   c  amp  255  d    0    d toString 16   b    d substr d length - 2  2   x000D          return b x000D        x000D      var f       x000D          q  r  s  t  a  b  c  d  x000D      e   function a    x000D          a   a replace   r n g    n    x000D          for  var b       d   0  d  lt  a length  d      x000D              var c   a charCodeAt d   x000D              128  gt  c   b    String fromCharCode c     127  lt  c  amp  amp  2048  gt  c   b    String fromCharCode c  gt  gt  6   192     b    String fromCharCode c  gt  gt  12   224   b    String fromCharCode c  gt  gt  6  amp  63   128    b    String fromCharCode c  amp  63   128   x000D            x000D          return b x000D        e   x000D      f   function b    x000D          var a  c   b length  x000D          a   c   8  x000D          for  var d   16     a - a   64    64   1   e   Array d - 1   f   0  g   0  g  lt  c   a    g - g   4    4  f   g   4   8  e a     b charCodeAt g   lt  lt  f  g    x000D          a    g - g   4    4  x000D          e a     128  lt  lt  g   4   8  x000D          e d - 2    c  lt  lt  3  x000D          e d - 1    c  gt  gt  gt  29  x000D          return e x000D        e   x000D      a   1732584193  x000D      b   4023233417  x000D      c   2562383102  x000D      d   271733878  x000D      for  e   0  e  lt  f length  e    16  q   a  r   b  s   c  t   d  a   k a  b  c  d  f e   0   7  3614090360   d   k d  a  b  c  f e   1   12  3905402710   c   k c  d  a  b  f e   2   17  606105819   b   k b  c  d  a  f e   3   22  3250441966   a   k a  b  c  d  f e   4   7  4118548399   d   k d  a  b  c  f e   5   12  1200080426   c   k c  d  a  b  f e   6   17  2821735955   b   k b  c  d  a  f e   7   22  4249261313   a   k a  b  c  d  f e   8   7  1770035416   d   k d  a  b  c  f e   9   12  2336552879   c   k c  d  a  b  f e   10   17  4294925233   b   k b  c  d  a  f e   11   22  2304563134   a   k a  b  c  d  f e   12   7  1804603682   d   k d  a  b  c  f e   13   12  4254626195   c   k c  d  a  b  f e   14   17  2792965006   b   k b  c  d  a  f e   15   22  1236535329   a   l a  b  c  d  f e   1   5  4129170786   d   l d  a  b  c  f e   6   9  3225465664   c   l c  d  a  b  f e   11   14  643717713   b   l b  c  d  a  f e   0   20  3921069994   a   l a  b  c  d  f e   5   5  3593408605   d   l d  a  b  c  f e   10   9  38016083   c   l c  d  a  b  f e   15   14  3634488961   b   l b  c  d  a  f e   4   20  3889429448   a   l a  b  c  d  f e   9   5  568446438   d   l d  a  b  c  f e   14   9  3275163606   c   l c  d  a  b  f e   3   14  4107603335   b   l b  c  d  a  f e   8   20  1163531501   a   l a  b  c  d  f e   13   5  2850285829   d   l d  a  b  c  f e   2   9  4243563512   c   l c  d  a  b  f e   7   14  1735328473   b   l b  c  d  a  f e   12   20  2368359562   a   m a  b  c  d  f e   5   4  4294588738   d   m d  a  b  c  f e   8   11  2272392833   c   m c  d  a  b  f e   11   16  1839030562   b   m b  c  d  a  f e   14   23  4259657740   a   m a  b  c  d  f e   1   4  2763975236   d   m d  a  b  c  f e   4   11  1272893353   c   m c  d  a  b  f e   7   16  4139469664   b   m b  c  d  a  f e   10   23  3200236656   a   m a  b  c  d  f e   13   4  681279174   d   m d  a  b  c  f e   0   11  3936430074   c   m c  d  a  b  f e   3   16  3572445317   b   m b  c  d  a  f e   6   23  76029189   a   m a  b  c  d  f e   9   4  3654602809   d   m d  a  b  c  f e   12   11  3873151461   c   m c  d  a  b  f e   15   16  530742520   b   m b  c  d  a  f e   2   23  3299628645   a   n a  b  c  d  f e   0   6  4096336452   d   n d  a  b  c  f e   7   10  1126891415   c   n c  d  a  b  f e   14   15  2878612391   b   n b  c  d  a  f e   5   21  4237533241   a   n a  b  c  d  f e   12   6  1700485571   d   n d  a  b  c  f e   3   10  2399980690   c   n c  d  a  b  f e   10   15  4293915773   b   n b  c  d  a  f e   1   21  2240044497   a   n a  b  c  d  f e   8   6  1873313359   d   n d  a  b  c  f e   15   10  4264355552   c   n c  d  a  b  f e   6   15  2734768916   b   n b  c  d  a  f e   13   21  1309151649   a   n a  b  c  d  f e   4   6  4149444226   d   n d  a  b  c  f e   11   10  3174756917   c   n c  d  a  b  f e   2   15  718787259   b   n b  c  d  a  f e   9   21  3951481745   a   h a  q   b   h b  r   c   h c  s   d   h d  t   x000D      return  p a    p b    p c    p d   toLowerCase   x000D     x000D   lt  DOCTYPE html gt  x000D   lt html gt  x000D   lt body onload  md5 value MD5 a value    gt  x000D   x000D   lt form oninput  md5 value MD5 a value   gt Enter String  x000D   lt input type  string  id  a  name  a  value  https   www zibri org  gt  lt  br gt  lt  br gt MD5  lt output id  md5  name  md5  for  a  gt  lt  output gt  x000D   lt  form gt  x000D   x000D   lt  body gt  x000D   lt  html gt  x000D   x000D   x000D

User · Answer

While selecting library it s also important to see if it supports modern frameworks such as Bower  passes jslint  supports plugin model for JQuery or module systems such as AMD RequireJS in addition to being in active development and have more than 1 contributors  There are couple of options that satisfies some or all of these additional criteria    CryptoJS  This is perhaps the most expansive library where each algorithm can be used separately without adding fat in to your JS code  Plus it as encoder decoders for UTF8  UTF16 and Base64  I maintain github repository that is registered as Bower package plus instructions on how to use it with RequireJS   Spark MD5  This is based on JKM code that other answer mentions which is also the faster implementation  However in addition  Spark implementation adds AMD support  passes jslint plus has incremental mode  It doesn t have Base64 o p but it does have raw o p  i e  array of 32-bit int insead of string   JQuery MD5 plugin  Very simple down to earth but doesn t seem to have raw mode  JavaScript-MD5  Not as fancy or fast as Spark but simpler    Example from CryptoJS     just include md5 js from the CryptoJS rollups folder var hash   CryptoJS MD5  Message    console log hash toString        There is a performance comparison between above libraries at http   jsperf com md5-shootout 7  On my machine current tests  which are admittedly old  shows that if you are looking for speed Spark MD5 is your best bet  and so is plain JKM code   However if you looking for more comprehensive library then CryptoJS is your best bet although it is 79  slower than Spark MD5  However I would imagine CryptoJS would eventually achieve same speed as it is bit more active project

User · Answer

You could also check my md5 implementation  It should be approx  the same as the other posted above  Unfortunately  the performance is limited by the inner loop which is impossible to optimize more

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It bothered me that I could not find an implementation which is both fast and support Unicode strings   So I made one which supports Unicode strings and still shows as faster  at time of writing  than the currently fastest ascii-only-strings implementations   https   github com gorhill yamd5 js  Based on Joseph Myers  code  but uses TypedArrays  plus other improvements

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Just for fun   this one is 42 lines long  fits in 120 characters horizontally  and looks good  Is it fast  Well - it s fast enough and it s approximately the same as all other JS implementations   I just wanted something that doesn t look ugly in my helpers js file and doesn t slow down my SublimeText with 20-mile long minified one-liners   So here s my favourite md5       A formatted version of a popular md5 implementation      Original copyright  c  Paul Johnston  amp  Greg Holt      The function itself is now 42 lines long   function md5 inputString        var hc  0123456789abcdef       function rh n   var j s    for j 0 j lt  3 j    s  hc charAt  n gt  gt  j 8 4   amp 0x0F  hc charAt  n gt  gt  j 8   amp 0x0F  return s       function ad x y   var l  x amp 0xFFFF   y amp 0xFFFF  var m  x gt  gt 16   y gt  gt 16   l gt  gt 16  return  m lt  lt 16   l amp 0xFFFF        function rl n c              return  n lt  lt c   n gt  gt  gt  32-c         function cm q a b x s t      return ad rl ad ad a q  ad x t   s  b        function ff a b c d x s t    return cm  b amp c     b  amp d  a b x s t        function gg a b c d x s t    return cm  b amp d   c amp   d   a b x s t        function hh a b c d x s t    return cm b c d a b x s t        function ii a b c d x s t    return cm c  b   d   a b x s t        function sb x            var i var nblk   x length 8  gt  gt 6  1 var blks new Array nblk 16  for i 0 i lt nblk 16 i    blks i  0          for i 0 i lt x length i    blks i gt  gt 2   x charCodeAt i  lt  lt   i 4  8           blks i gt  gt 2   0x80 lt  lt   i 4  8  blks nblk 16-2  x length 8 return blks            var i x sb inputString  a 1732584193 b -271733879 c -1732584194 d 271733878 olda oldb oldc oldd      for i 0 i lt x length i  16   olda a oldb b oldc c oldd d          a ff a b c d x i  0   7  -680876936  d ff d a b c x i  1  12  -389564586  c ff c d a b x i  2  17   606105819           b ff b c d a x i  3  22 -1044525330  a ff a b c d x i  4   7  -176418897  d ff d a b c x i  5  12  1200080426           c ff c d a b x i  6  17 -1473231341  b ff b c d a x i  7  22   -45705983  a ff a b c d x i  8   7  1770035416           d ff d a b c x i  9  12 -1958414417  c ff c d a b x i 10  17      -42063  b ff b c d a x i 11  22 -1990404162           a ff a b c d x i 12   7  1804603682  d ff d a b c x i 13  12   -40341101  c ff c d a b x i 14  17 -1502002290           b ff b c d a x i 15  22  1236535329  a gg a b c d x i  1   5  -165796510  d gg d a b c x i  6   9 -1069501632           c gg c d a b x i 11  14   643717713  b gg b c d a x i  0  20  -373897302  a gg a b c d x i  5   5  -701558691           d gg d a b c x i 10   9    38016083  c gg c d a b x i 15  14  -660478335  b gg b c d a x i  4  20  -405537848           a gg a b c d x i  9   5   568446438  d gg d a b c x i 14   9 -1019803690  c gg c d a b x i  3  14  -187363961           b gg b c d a x i  8  20  1163531501  a gg a b c d x i 13   5 -1444681467  d gg d a b c x i  2   9   -51403784           c gg c d a b x i  7  14  1735328473  b gg b c d a x i 12  20 -1926607734  a hh a b c d x i  5   4     -378558           d hh d a b c x i  8  11 -2022574463  c hh c d a b x i 11  16  1839030562  b hh b c d a x i 14  23   -35309556           a hh a b c d x i  1   4 -1530992060  d hh d a b c x i  4  11  1272893353  c hh c d a b x i  7  16  -155497632           b hh b c d a x i 10  23 -1094730640  a hh a b c d x i 13   4   681279174  d hh d a b c x i  0  11  -358537222           c hh c d a b x i  3  16  -722521979  b hh b c d a x i  6  23    76029189  a hh a b c d x i  9   4  -640364487           d hh d a b c x i 12  11  -421815835  c hh c d a b x i 15  16   530742520  b hh b c d a x i  2  23  -995338651           a ii a b c d x i  0   6  -198630844  d ii d a b c x i  7  10  1126891415  c ii c d a b x i 14  15 -1416354905           b ii b c d a x i  5  21   -57434055  a ii a b c d x i 12   6  1700485571  d ii d a b c x i  3  10 -1894986606           c ii c d a b x i 10  15    -1051523  b ii b c d a x i  1  21 -2054922799  a ii a b c d x i  8   6  1873313359           d ii d a b c x i 15  10   -30611744  c ii c d a b x i  6  15 -1560198380  b ii b c d a x i 13  21  1309151649           a ii a b c d x i  4   6  -145523070  d ii d a b c x i 11  10 -1120210379  c ii c d a b x i  2  15   718787259           b ii b c d a x i  9  21  -343485551  a ad a olda  b ad b oldb  c ad c oldc  d ad d oldd             return rh a  rh b  rh c  rh d        But really  I posted it merely out of aesthetic considerations  Also  with the comments it s exactly 4000 bytes  Please don t ask why  I can t come up with a proper explanation for my OCD rebel behaviour  Also  thank you Paul Johnston  thank you Greg Holt   Side note  you guys omitted a few var keywords so I took the liberty of adding them

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I only need to support HTML5 browsers that support typed arrays  DataView  ArrayBuffer  etc   I think I took the Joseph Myers code and modified it to support passing in a Uint8Array  I did not catch all the improvements  and there are still probably some char   array artifacts that can be improved on  I needed this for adding to the PouchDB project   var PouchUtils       PouchUtils Crypto        function          PouchUtils Crypto MD5   function  uint8Array            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  lt  lt  s     a  gt  gt  gt   32 - s    b                      function ff a  b  c  d  x  s  t                return cmn  b  amp  c       b   amp  d   a  b  x  s  t                      function gg a  b  c  d  x  s  t                return cmn  b  amp  d     c  amp    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  lt   s length  i    64                    md5cycle state  md5blk s subarray i - 64  i                               s   s subarray i - 64               var tail    0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0               for  i   0  i  lt  s length  i                    tail i  gt  gt  2     s i   lt  lt    i   4   lt  lt  3               tail i  gt  gt  2     0x80  lt  lt    i   4   lt  lt  3               if  i  gt  55                    md5cycle state  tail                   for  i   0  i  lt  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  lt  64  i    4                    md5blks i  gt  gt  2    s i                     s i   1   lt  lt  8                     s i   2   lt  lt  16                     s i   3   lt  lt  24                             return md5blks                     var hex chr    0123456789abcdef  split               function rhex n                var s       j   0              for    j  lt  4  j                    s    hex chr  n  gt  gt   j   8   4    amp  0x0F                    hex chr  n  gt  gt   j   8    amp  0x0F               return s                     function hex x                for  var i   0  i  lt  x length  i                    x i    rhex x i                return x join                         function md5 s                return hex md51 s                       function add32 a  b                return  a   b   amp  0xFFFFFFFF                     return md5 uint8Array

User · Answer

As of 2020 the fastest MD5 implementation is probably written in WASM  Web Assembly   hash-wasm is a library that implements MD5 hash in WASM  You can find the benchmarks here  You can either install it with npm  npm i hash-wasm  or just add a script tag  lt script src  quot https   cdn jsdelivr net npm hash-wasm quot  gt  lt  script gt   then use the hashwasm global variable  Example  async function run       console log  MD5    await hashwasm md5  The quick brown fox jumps over the lazy dog        run     outputs MD5  9e107d9d372bb6826bd81d3542a419d6

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