Date: Sun, 19 Oct 2014 17:44:11 +0400 From: Solar Designer <solar@...nwall.com> To: feed <feedtek@...il.com> Cc: john-users@...ts.openwall.com Subject: Re: PKZIP and GPU acceleration On Sun, Oct 19, 2014 at 03:09:28PM +0200, feed wrote: > Thanks Alexander, i'll try in a minute > Any advice for the compiling build for an ec2? Just use bleeding-jumbo's defaults. Then use --fork=N, with N matching the number of logical CPUs you see in /proc/cpuinfo (perhaps 32). > For a 127GB archive (a win backup with file and folders) i used zip2john to > extract the hash with no options, it is correct? That's correct usage, yes, although I don't think we ever tested on a pkzip archive this big. You could want to create a test archive of similar size, with a known password, and try cracking that first. You could create that test archive right on the EC2 machine. Oh, and please re-run zip2john after you've upgraded to bleeding-jumbo. Do not merely reuse the output from the older zip2john that you had used before. It might differ. Like I said, there was a bug. Alexander
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