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Date: Sat, 1 Sep 2012 16:09:34 +0100
From: colin wright <john-users_oj@...ipsys.co.uk>
To: john-users@...ts.openwall.com
Subject: Re: Trouble getting started - can anyone offer advice? (now solved)
On Saturday 01 September 2012 00:30, Solar Designer wrote:
> On Wed, Aug 29, 2012 at 03:20:51PM +0100, colin wright wrote:
> > libssl-dev now installed, problem solved using jumbo.
> > Vanilla version still doesn't work, unrecognised format.
>
> Now this is obvious:
> > $ ./john --format=crypt mypasswd
> > Unknown ciphertext format name requested
>
> [...]
>
> > $ make clean generic
>
> Perhaps you were building the vanilla version as
> "generic" as well. This cripples it down, both in
> terms of speed and functionality. When you're on
> Linux, you should be using one of the linux-* make
> targets (probably linux-x86-64 on 64-bit or
> linux-x86-sse2 on 32-bit).
I was indeed building "generic" - it seemed a reasonable, safe, and prudent
move to try bringing the system up slowly using the most generic settings
first, before then invoking the system specific options. I may return to
this when I get time, but for now, the "jumbo" version is working, and I have
what I need.
> You'll also want to enable OpenMP by uncommenting
> one of the OMPFLAGS lines in the Makefile.
Noted - thank you.
> Finally, you might want to be aware that jumbo's
> --format=sha512crypt is about 30% faster than
> --format=crypt (your system's crypto code). Both
> support OpenMP (when enabled).
Thanks.
cdw.
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