Date: Fri, 17 Oct 2014 14:51:24 -0700 From: starwars1070 <starwars1070@...il.com> To: john-users@...ts.openwall.com Subject: Re: Some format ssh and ssh-ng issues/questions Some versions of red hat Linux and if I recall from the guys in the lab who where testing it out some versions of ubuto I may be wrong I do know that red hat Linux does Sent via the Samsung GALAXY S® 5, an AT&T 4G LTE smartphone Please Excuse all spelling errors and other grammer errors as I am more then likely typing this message on the bus or at the gym all errors are my own and are not on purpose -------- Original message -------- From: Frank Dittrich <frank.dittrich@...lbox.org> Date:10/17/2014 2:40 PM (GMT-08:00) To: john-users@...ts.openwall.com Cc: Subject: Re: [john-users] Some format ssh and ssh-ng issues/questions On 10/17/2014 10:21 PM, Dhiru Kholia wrote: > On Fri, 17 Oct 2014, Frank Dittrich wrote: >> According to doc/README.ssh, both formats (ssh and ssh-ng) support >> cracking passwords of ssh private key files. >> But for some reason, their corresponding converters, ssh2john and >> sshng2john.py, produce different hashes. > > See "../run/ssh2sshng.py" utility. OK, ssh2sshng.py can convert ssh hashes into ssh-ng hashes. Why didn't you update doc/README.ssh after you wrote ssh2sshng.py? >> Apparently, ssh-ng needs additional 20 seconds before the real cracking >> starts, because the status line reports just 10 seconds of run time. >> So, you'd need some longer sessions, before ssh-ng with the reported c/s >> rate of 4421K catches up with ssh (reported c/s rate 3051K). > >> Apparently, cipher 2 has been added (just to ssh-ng) with this commit: >> commit da8f1dfcc35e41c52ff28428e9ffd6f65e34eafd >> How to I generate such a private key? > > http://www.tedunangst.com/flak/post/new-openssh-key-format-and-bcrypt-pbkdf When you rewrite ssh-ng at some point, you should mention that URL in a comment. OpenSSH version 6,5 includes support for Ed25519 as a public key type and a new private key format that uses a bcrypt KDF. What OS/distro currently ships OpenSSH version 6,5? Frank
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