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Date: Mon, 27 Jun 2011 13:25:18 +0400
From: Solar Designer <>
Subject: Re: brute force attack of an Unix crypt

On Mon, Jun 27, 2011 at 12:03:23PM +0300, Martin T wrote:
> Bartavelle, I see. Now I understand what those "c/s" values are :) In
> order to try all possibilities, it would take 226 years:
> (95^8)/930000/3600/24/365

Yes, assuming that you continue running the same highly non-optimal
build of JtR on the same machine.

> ..and thus in average password should be cracked with 113 years

This assumes that the password was based on a random number generator
with a uniform distribution, and using the entire printable US-ASCII
character set.  Both of these are likely not true.  So the average may
be much better.


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