Date: Tue, 4 Dec 2012 16:59:21 +0530 From: Dhiru Kholia <dhiru.kholia@...il.com> To: john-users@...ts.openwall.com Subject: Re: Cracking a GPG keyring On Tue, Dec 4, 2012 at 10:52 AM, Haneef Mubarak <haneef503@...il.com> wrote: > I forgot the passphrase to my GPG keyring. I was wondering if there was a way to > crack the passphrase using JTR. I have a the highest workstation model Xeon on > Sandy Bridge on the market, along w/ a GTX 690. I have the CUDA toolkit and have > managed to compile and test JTR. > > I went and searched all over the place (Google), and couldn't find much. I was > wondering if someone could please point me to a specific command (ie: ./john > ...) or a series of commands. http://www.ubuntuvibes.com/2012/10/recover-your-gpg-passphrase-using-john.html https://github.com/magnumripper/JohnTheRipper/blob/unstable-jumbo/doc/README.gpg $ ../run/john -fo:gpg-opencl <hashfile> Ensure that your key uses SHA1 based s2k function before using the OpenCL gpg format. Let us know if you run into specific problems. -- Cheers, Dhiru
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