From: Boyd Roberts <boyd@strakt.com>
To: 9fans@cse.psu.edu
Subject: Re: [9fans] OS install floppy hangs during boot on Bochs 1.4.1
Date: Tue, 26 Nov 2002 11:25:46 +0100 [thread overview]
Message-ID: <3DE34C2A.1040803@strakt.com> (raw)
In-Reply-To: <20021125225654.B2266@tibia.amotlpaa.bogus>
Steven Taschuk wrote:
>For my next trick... I wonder whether the MD5 algorithm is such
>that the hash for the concatenation of two blocks of bits can be
>determined quickly from the hashes for the two blocks.
>
I would say that the treatment of the last block would negate this;
it is 'padded' and then hashed. I suppose you could keep the hashes
of the penultimate blocks and then compute the last blocks' hashes,
but this smacks of a lot of chicanery for not much gain.
next prev parent reply other threads:[~2002-11-26 10:25 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-11-26 3:00 Russ Cox
2002-11-26 2:59 ` andrey mirtchovski
2002-11-26 5:56 ` Steven Taschuk
2002-11-26 10:25 ` Boyd Roberts [this message]
2002-11-27 18:18 ` Dan Cross
-- strict thread matches above, loose matches on Subject: below --
2002-11-26 3:27 Geoff Collyer
2002-11-26 3:10 Russ Cox
2002-11-26 5:47 ` Steven Taschuk
2002-11-25 21:18 Russ Cox
2002-11-26 1:08 ` Steven Taschuk
2002-11-25 20:47 Steven Taschuk
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