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Message-ID: <20120617150832.GN31349@cmpxchg8b.com>
Date: Sun, 17 Jun 2012 17:08:32 +0200
From: Tavis Ormandy <taviso@...xchg8b.com>
To: john-dev@...ts.openwall.com
Subject: Re: Re: [patch] optional new raw sha1 implemetation
On Sun, Jun 17, 2012 at 10:00:44AM -0500, jfoug wrote:
> Why are we doing a memset here? A simply *ptr=0 is all that is needed. We
> simply need to return a ASCIIZ string, changing the 0x80 to 0x00.
The path isn't hot, so it's not important, I just like the way it
looks. I don't mind if you want to change it.
I'm ocd about making code line up nicely ;-)
>
> + strrchr((char*)key, 0x80) = 0;
You missed the deref I think, but that should work if you prefer it.
> We are assured that there will be a 0x80 within first 16 bytes, and we have
> an array that now is 20 bytes long.
>
> I also think the key[4] = 0 could be eliminated by doing: static uint32_t
> key[5] = {0}; or by using a pointer and calloc(17).
>
> Jim.
Yep, that sounds fine too.
Tavis.
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