Date: Sun, 12 Aug 2012 19:44:23 +0530 From: Dhiru Kholia <dhiru.kholia@...il.com> To: john-dev@...ts.openwall.com Subject: Cracking OpenPGP / GnuPG private key files with JtR Hi, I have added support for cracking OpenPGP / GnuPG private key files to JtR. The code is committed to magnum-jumbo repository. Usage: 1. Get and compile gpg2john from https://github.com/halfie/gpg2john.git (This code will be integrated with john at some point) 2. Run gpg2john on PGP private key file(s). 3. Run john on the output of gpg2john. Benchmark: $ ../run/john -fo:gpg -t Benchmarking: OpenPGP / GnuPG Secret Key [32/64]... (3xOMP) DONE Many salts: 190 c/s real, 65.8 c/s virtual Only one salt: 119 c/s real, 39.9 c/s virtual Currently, I don't know why "Many salts" case is faster. Lukas, The key derivation function(s) seems to be simple. If you have some time, can you look into OpenCL implementation of this format? magnum, This stuff is not tested heavily and hence might not be a candidate for jumbo-7. Your call :-) TODO: Add support for RIPEMD and SHA2 hashes. -- Cheers, Dhiru
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