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Date: Mon, 20 Apr 2015 13:32:52 +0300
From: Alexander Cherepanov <>
Subject: Re: Advice on proposal: John the Ripper jumbo robustness

On 20.04.2015 06:26, Kai Zhao wrote:
> Conclusion: return after john_init() accelerates when the hash is valid.

You should run afl with a valid hash as input. In the long run it should 
not matter (ignoring length checks for a moment) but it should discover 
more paths earlier starting from a valid hash.

> It adds about 100 exec/sec when the hash is valid.

Thanks, that's about +10%. Nice to have but not overly important. Let's 
see where the next bottleneck is.

Alexander Cherepanov

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