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Date: Sat, 1 Sep 2012 16:09:34 +0100
From: colin wright <>
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).


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