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Message-ID: <ca36255a755961a0d682d5db2a830b30@smtp.hushmail.com>
Date: Thu, 01 May 2014 11:50:32 +0200
From: magnum <john.magnum@...hmail.com>
To: john-dev@...ts.openwall.com
Subject: Re: hmacSHA256_fmt.c in john-1.7.9-jumbo-7 - allow long
salts
On 2014-05-01 11:00, Colm O'Flaherty wrote:
> Fair points.. I followed the guidance at
> http://openwall.info/wiki/how-to-make-patches (linked from
> http://openwall.info/wiki/)
>
> Can I suggest that someone updates the recommended practice, as documented
> on that page, so new people know the score?
I did that right after sending but that page still barely mentions that
we use GitHub nowadays (for Jumbo, that is. Someone could want to send a
patch for core John and that's another thing).
> I wasn't aware that 125 was the global max for the key, since it was being
> used as hardcoded value. That was also based on ignorance my my part. I
> initially reduced it to about 30 before realising that one of the test
> cases failed because it had a long key, so I upped it back to 110, which
> solved the problem. Maybe the best fix is for the code to use a constant
> in this case, so the developer will know that they should not mess with it,
> and so any change will have global effect.
Yes, maybe we should add a macro in params.h. We do have
PLAINTEXT_BUFFER_SIZE as 0x80 but that is gross size - it can be used in
declarations but not in exact max tests. For some reason some other part
of john pushes the usable part back a couple of bytes, to 125 instead of
127.
> I've managed to avoid using Git to date (although I use it find source code
> disclosure in web apps). Time for me to move into the next millennium, by
> the sounds of it.
It took me a while to get the hang of it but git is the best thing since
sliced DES. If you're going to submit more stuff I recommend you create
a GitHub account and fork the bleeding-jumbo branch of
https://github.com/magnumripper/JohnTheRipper.
magnum
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