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Message-ID: <20130712160622.GA14958@openwall.com>
Date: Fri, 12 Jul 2013 20:06:22 +0400
From: Solar Designer <solar@...nwall.com>
To: john-dev@...ts.openwall.com
Subject: Re: Parallella: bcrypt
Hi Katja,
On Fri, Jul 12, 2013 at 05:53:11PM +0200, Katja Malvoni wrote:
> I locked up 2nd board while experimenting with assembly implementation of
> BF_ROUND. I'm not sure how that happened - the only change I made to code
> that was running but didn't produce result (it stuck somewhere but didn't
> lock up the board) was putting constants (offsets of S-box to pointer to
> BF_ctx structure) in registers. I used only caller saved registers (r16-r27
> and r12), iadd instead of add and just followed C code and compiler
> generated assembly code and wrote BF_ROUND from scratch just to make it
> work. My guess is that I wasn't loading values from S-box but from
> somewhere else. I'm sorry and I'll be more careful with future tests.
No problem. I've just power-cycled the board, and it is back up now.
Alexander
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