Date: Mon, 10 Jun 2019 19:25:14 +0530 From: Dhiru Kholia <dhiru.kholia@...il.com> To: john-users@...ts.openwall.com Subject: Re: Issues cracking an ssh key On Fri, May 31, 2019 at 10:17 PM Adam Lininger <arlininger@...il.com> wrote: > I've got an encrypted ssh private key. I've managed to use ssh2john to > convert it and seem to have a crack (using --format=ssh-opencl). > However, the resulting passphrase doesn't decrypt the key. Instead > openssl errors out. > > When I use --format=ssh and a fresh pot file, the same passphrase does > NOT appear to crack the key. What's odd is that the ssh format warns > about false positives and keeps going while ssh-opencl does not. The OpenCL SSH code is missing the "second round" (extra set) of verification checks IIRC, which leads to this problem of false positives. I am not sure how hard it would be to make the OpenCL SSH code as rigorous as the CPU code (I haven't seen JtR code in a while). Dhiru
Powered by blists - more mailing lists
Confused about mailing lists and their use? Read about mailing lists on Wikipedia and check out these guidelines on proper formatting of your messages.