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Date: Mon, 21 Nov 2011 21:02:03 +0400
From: Solar Designer <solar@...nwall.com>
To: john-dev@...ts.openwall.com
Subject: Re: best way to get ciphertext
On Mon, Nov 21, 2011 at 05:34:50PM +0100, Lukas Odzioba wrote:
> What about moving crypt_all code to cmp_all and leaving crypt_all empty?
There are a couple of problems with this:
1. cmp_all() is not always called. When the number of hashes for a salt
is above a threshold, a get_hash*() function is called instead.
2. cmp_all() may be called multiple times if there's more than one hash
for a salt, but the threshold mentioned above is not reached.
> If there were no set_salt or set_key calls between last cmp_all call
> then don't do hash calculations inside cmp_all - just in case.
Yes, this addresses #2 above.
#1 may be addressed by introducing a new FMT_* flag as I pointed out in
another message, but this is a tradeoff.
Alexander
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