[Anaconda-devel] Re: isomd5sum > isoshasum

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On Sat, Nov 26, 2022 at 02:49:11PM +0100, Jiri Konecny wrote:
> Adding also author of the question to the reply. Sorry for the noise.
> Dne 26. 11. 22 v 14:43 Jiri Konecny napsal(a):
> > Hi,
> >
> > I'm not a  project maintainer but from my PoV this project is a bit in 
> > maintenance mode so I don't expect such a change. Also change of the 
> > hash algorithm should be done as a separate project probably -- it 
> > would mean renaming anyway. And honestly, I would expect that there 
> > are better alternatives now (did not looked for them so I might be wrong).
> >
> > Brian, I guess you are the best person to ask about the project (based 
> > on the number of contributions. What do you think?
> >
> > Best Regards,
> > Jirka
> >
> > Dne 22. 11. 22 v 21:49 Pappas, John W napsal(a):
> >>
> >> Hello, I am wondering if there is a limitation on the size of hash 
> >> that can be used to embed and validate.  IE, why has this not moved 
> >> to a more resilient hash?

There may be enough space to use a different hash, but I don't see any
compelling reason to switch. md5 is still useful for integrity checking
which is all that this is doing. It's not a crytographic check of the
iso, it's main purpose is to let users know that something went wrong
when they wrote it onto a CD, DVD, or flash drive so that they don't run
into unexpected errors during the install.

FWIW it does use a string that starts with 'ISO MD5SUM = ' so in theory
it could switch to a different algorithm and maintain backwards
compatibility. It has 512 bytes available to use for the data.


Brian C. Lane (PST8PDT) - weldr.io - lorax - parted - pykickstart
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