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Message-ID: <20120819172921.GF16602@port70.net>
Date: Sun, 19 Aug 2012 19:29:21 +0200
From: Szabolcs Nagy <nsz@...t70.net>
To: musl@...ts.openwall.com
Subject: Re: Help-wanted tasks for musl
* Szabolcs Nagy <nsz@...t70.net> [2012-08-19 18:56:52 +0200]:
> 3)* reference implementation and glibc accepts negative
> rounds in an implementation defined way, ie.
>
> '$5$rounds=-4294965296$' is treated as
> '$5$rounds=2000$' on a 32bit system and as
> '$5$rounds=999999999$' on a 64bit one
>
> (according to spec N is clamped into 1000...999999999
> so the correct treatment would be '$5$rounds=1000$')
>
i was wrong here about the correct treatment
the spec says that N is an unsigned decimal so negative
numbers must not be recognized at all
(so in this case the default rounds should be used and
'rounds=-4294965296' should be treated as salt)
but i guess the spec does not matter much in this case,
either we should be bug compatible with glibc or reject
such salts
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