Date: Sat, 10 Nov 2012 20:21:52 +0530 From: Dhiru Kholia <dhiru.kholia@...il.com> To: john-users@...ts.openwall.com Subject: Re: Noob: trying to recover own gpg/pgp passphrase with limited set of characters On 11/09/2012 04:38 AM, sngh wrote: > I kinda think I remember my pass-phrase being like either a > combination of a few words and year numbers and a single exclamation > mark as "special" character. You can try using http://hashcat.net/wiki/doku.php?id=statsprocessor to generate a custom dictionary. > my real pass-phrase (converted hash to john format) is in a file secinfo.txt > secinfo.txt: > secring.gpg:$gpg$*17*42*1024*............. JtR supports cracking DSA keys. I just confirmed it. > Loaded 1 password hash (OpenPGP / GnuPG Secret Key [32/64]) > Warning: only 44 characters available This warning is a bit strange. I don't know what it means and how does it impact cracking. > Also, currently I am running this on a cpu (multi-core though), but > its only outputting like 8 to 9k checks a second or so on a single > john instance. Maybe I could have access to a gpu gfx card or even a > few to speed things up. You can enable OpenMP by un-commenting "#OMPFLAGS = -fopenmp" in Makefile and then re-compiling JtR. John will then use all the cores. JtR achieves a speedup of 97X when running on ATI 7970 as compared to a single core 2.8GHz CPU for gpg format. -- Cheers, Dhiru
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