Date: Mon, 19 May 2014 09:10:42 +0400 From: Dennis Schridde <devurandom@....net> To: john-users@...ts.openwall.com Subject: Partially known PGP key password Hello everyone! A friend of mine only remembers the beginning of his PGP key password and needs to recover the rest. I suggested John and already converted the key using gpg2john and created a john.local.conf similar to the following: [List.Rules:R] Az~[a] Az~[a][b] Az~[a][b][c] where a,b,c are possible characters of the password. Now I am running John with a wordlist that contains only one line: The known first characters. My question is: Is this an efficient way to crack the password? (My machine has two cores, but John compiled with OpenMP only uses one, while I would assume the task to be easily parallelisable.) When I talked to Magnum (actual question below ), he pointed out that I might be using too many salts. Now Johns says "Loaded 2 password hashes with 2 different salts (OpenPGP / GnuPG Secret Key [32/64])", so I assume that two are not really too many, right? And it seems those salts came from the PGP key itself, because the file gpg2john created contains two lines, and I do not see any other resemblance of the number "2" anywhere. Best regards, Dennis  > I read that I can make john output a status line by pressing <space> > during runtime. I also read that I can execute john -status from > another console and it will examine the john.rec file to print the > status line there. However, neither method works on my system: > > Pressing space just does nothing. Pressing q sometimes exits john > immediately, but I cannot reproduce that now. Pressing ^C results in a > line "Wait...", but nothing happens. Pressing ^C aborts the session > immediately. > > Executing john -status results in the message that the file john.rec > does not exist.
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