2001-11-09-11:50:44 H C:
> I've posted a CLI version of my Hasher file hashing
> tool at my site:
>
> http://patriot.net/~carvdawg/perl.html
Compatible output can be produced with the (lengthy:-) perl cmdline:
perl -MDigest::MD5 -MDigest::SHA1 -MIO::File -le \
'for(@ARGV){print join ",",$_,
Digest::MD5->new->addfile(IO::File->new("<$_"))->hexdigest,
Digest::SHA1->new->addfile(IO::File->new("<$_"))->hexdigest}'
Typing such a cmdline isn't for just anyone, of course, but knowing
how to invoke this can be handy for snaffling hashes when you don't
happen to have a cmdline tool lying conveniently to hand.
While I've not yet gotten around to actually writing the thing, I've
felt for a while that the really handy component to have about would
be a hashing tool that emits not the hex encoding, but the RFC
1751-style easy-to-read/transcribe/compare-by-eye version, as
originally specified for S/Key.
My feeling is that for forensic work, the very most useful move
would be to aggregate whatever evidence you wish to preserve, run up
the hash, and transcribe it into a paper log, thereby moving
questions of chain of evidence and whatnot into a domain where
people are at least accustomed to dealing with them.
-Bennett
This archive was generated by hypermail 2b30 : Mon Nov 12 2001 - 14:34:42 PST