Date: Tue, 29 Mar 2011 23:34:33 +0400 From: Solar Designer <solar@...nwall.com> To: john-dev@...ts.openwall.com Subject: Re: binary hashes and BINARY_SIZE On Tue, Mar 29, 2011 at 11:11:47AM -0800, Alain Espinosa wrote: > I make a rapid read and do not fully understand how john works. When i > have some free time i read again and change the NTLM behavior. Thanks. > I think > this 'john internal documentation' is very useful for john developers > when starting a new format. Add it to the wiki or a 'How to support a > new format'? Yes, that's what I was thinking and it was part of my motivation to write that message. I added a link to it to: http://openwall.info/wiki/john/development#Integrating-new-formats while keeping the rest of the page the way it was contributed by others, even though I think it needs a major overhaul. > I think memory usage/managment make an appreciable influence in > performance which a large number of hashes. Are you referring to cache and TLB hit rates, which are presumably improved with reduced working set? BTW, I have another closely related optimization on my to-do list: separating hot vs. cold memory allocations. Alexander
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