Date: Tue, 19 Dec 2017 16:06:11 +0100 From: Solar Designer <solar@...nwall.com> To: john-users@...ts.openwall.com Subject: Re: OpenMP On Tue, Dec 19, 2017 at 01:33:56PM +0000, Mounir Belhniyene wrote: > Thank you so much for your fast reply. Here is it the example of password > cracking : > > ensaf@...af:~/JohnTheRipper-bleeding-jumbo/run$ ./zip2john > ~/Desktop/doc.zip > ~/Desktop/doczip.hash > ver 1.0 efh 5455 efh 7875 doc.zip->doc PKZIP Encr: 2b chk, TS_chk, > cmplen=62, decmplen=50, crc=80ECEF18 > ensaf@...af:~/JohnTheRipper-bleeding-jumbo/run$ ./john ~/Desktop/doczip.hash > Using default input encoding: UTF-8 > Loaded 1 password hash (PKZIP [32/64]) > Warning: OpenMP is disabled; a non-OpenMP build may be faster > Press 'q' or Ctrl-C to abort, almost any other key for status This output suggests you might be on a system that has only one logical CPU. Maybe a VM to which you didn't grant more than one logical CPU? Also, the PKZIP format is a "fast" one, meaning that OpenMP scaling will be poor even if you get it working, and you should prefer the "--fork" option instead. But first you need to figure out how many logical CPUs you have on this system. Assuming this is Linux, can you please post the output of: cat /proc/cpuinfo Alexander
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