Compute hash using MD2, MD5, SHA-1, SHA-256, SHA-384, or SHA-512

Hashes a string (or other MATLAB variable) using a vairiety of hash algorithms

Description

Recently, some common hash algorithms have been criticized in cryptological studies. In response, more choices among common hash algorithms need to be available.

This function, called HASH, computes a digest using a hash function chosen from among MD2, MD5, SHA-1, SHA-256, SHA-384, and SHA-512. It can hash strings or variables of several data types. Use "help hash" for more information.

Michael Kleder, Nov 2005

• MATLAB release: MATLAB 7.0.4 (R14SP2)
• Other requirements: This function uses Java.

[Tim Dirchley]

very fast & useful

[Andrew Medlin]

Simple and useful reference for computing hash values.

[Sharat Chikkerur]

very useful. Saved myself a lot of coding

[Stephan Hellerbrand]

Very useful tool. Thanks!

[M I]

Very useful tool. Thanks
Simple and useful reference for computing hash values, and quick!

[billow he]

Thanks for your contribution, it will help me much in my work.

[JongMin Jeong]

 

[George Varbanov]

Interesting Good

[P. McNamara]

Be careful. Also we are looking at your downloads records.

[Peter Pan]

 

[ahmed abd ellatif]

thank you

[Chris Rodgers]

To cope with complex input, replace with this code from line 46:

else % convert everything else into uint8 format without loss of data
    if ~isreal(inp)
        inp=reshape([real(inp(:)).'; imag(inp(:)).'],[],1);
    end
    inp=typecast(inp,'uint8');
end

[mani kandan]

Sir,
I am Manikandan from INDIA. Ur code for SHA and other hash algorithms are ok. But , I got an error. Plz. check ur mail id.. and help me on this regard.

mail me at [e-mail]

[Evaristo Rojas Mayoral]

It woks OK.

[mani kandan]

Sir, this code is working fine. But , Sir, Is it compatible for Images
I could not get the proper hash , for images
plz reply to [e-mail]

[Derek Hoyle]

Very elegant!

[Thomas Deneux]

clear and useful!

[Jan Simon]

Works correctly, good help, no H1-line, example, date and author mentioned in the source.

~any(strcmp(meth, algs))
  is faster than:
isempty(strmatch(meth,algs,'exact'))

The conversion of the HEX output is to complicated:
  h=typecast(x.digest,'uint8');
  h=dec2hex(h)';
  if(size(h,1))==1
     h=[repmat('0',[1 size(h,2)]);h];
  end
  h=lower(h(:)');
Easier and faster:
  h = sprintf('%.2x', typecast(x.digest, 'uint8'));
For Matlab 6.5: only MD5 and SHA-1 are working, TYPECAST must be downloaded from FEX, and the SPRINTF needs a cast to DOUBLE.

Because you call Java for the calculation, this is not very fast, but still the most reliable hash tool in the FEX. Thanks!

[Danila]