OSEC

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Re: [HACKERS] Postgres: pg_hba.conf, md5, pg_shadow, encrypted passwords

From: Jim Knoble (jmknoblepobox.com)
Date: Thu Apr 21 2005 - 16:14:35 CDT


Circa 2005-04-21 dixit Mike Fratto:

:
: > I thought the idea of the salt was to aid in expanding the
: > keyspace. Even though the salt is known (in traditional Unix
: > passwd/shadow/master.passwd databases,
:
: I am pretty sure the intent the salt is to make pre-computation of a
: dictionaries infeasable due to storage requirements. It doesn't really add
: to the keyspace because the salt is known and doesn't have to be guessed.

... which is exactly what i was speaking of. The salt increases the
keyspace for the precomputed table of password hashes. The conversation
was not about brute force attacks....

--
jim knoble | jmknoblepobox.com | http://www.pobox.com/~jmknoble/
(GnuPG fingerprint: 809F:09B9:9686:D035:4AB0::9455:124B:0A62:DD6A:76D6)
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