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Message-ID: <20130105070053.GD14030@openwall.com>
Date: Sat, 5 Jan 2013 11:00:53 +0400
From: Solar Designer <solar@...nwall.com>
To: john-users@...ts.openwall.com
Subject: Re: How does JTR know what kind of hash to try to crack?
On Mon, Dec 31, 2012 at 11:00:53PM +0000, John Hall wrote:
> Using JTR with jumbo patch to try to crack forgotten password to the Password Safe program http://passwordsafe.sourceforge.net/
>
> I believe the Password Safe program uses SHA-256 hash.
>
> Question: How does john know to try SHA-256 hash codes instead of, say, MD5 hash codes or some other hash?
When you run the pwsafe2john program, it formats its output such that
JtR will know the data came from a Password Safe database. JtR then
runs the proper code, which includes Password Safe specific uses of
SHA-256 (lots of iterations of it per each candidate password tested)
and more.
Alexander
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