[X2go-Dev] [X2go-User] Eliptical SSH keys and X2go client (was Re: Autolaunching)

[CACook at quantum-sci.com]

On Sunday 31 July, 2011 01:36:34 Mike Gabriel wrote:
> I am cross-posting this x2go-user thread to x2go-dev as it seems that  
> there is a SSH problem when eliptical curve keys are used...


> x2goclient uses the system's SSH library (libssh). Could you check the  
> version you have installed on your system? I would be good if you  
> could compose a complete bug report (what did you do, what did you  
> expect, what happened, what systems and versions did you use, etc.),  
> so that the devs have a cook recipe to reproduce your issues.

I'm running Debian Testing, which I update on the first of each month with apt-get dist-upgrade.  I have installed both libssh-4 (0.5.0-2) and libssh2-1 (1.2.8-1) for some reason.

I wanted elliptic curve encryption so in sources.list I removed testing and added unstable, update and install openssh.  (Need openssh version 5.7 and above for elliptic curve)  Then set back to testing.

I removed my old keys from client and server and created new keys with
$ ssh-keygen -t ecdsa -b 521
(use defaults and NO passphrase)

$  ssh-copy-id -i ~/.ssh/id_ecdsa.pub {user}@{remote-systems}
 ... and test with ssh {remote-system}.


> Could you also test your pub/priv key pair with pyhoca-gui? It uses an  
> SSH implementation called Python Paramiko and it is a complete rewrite  
> of libssh-stuff in Python. I suppose it neither supports those keys  
> but it would be good to know for certain.

Oh hell this reinalled all the Pulse audio stuff.

$ pyhoca-gui
pyhoca-gui[17344] (x2gosessregistry-pylib) NOTICE: registering X2go session Droog...
pyhoca-gui[17344] (x2goclient-pylib) NOTICE: initializing X2go session...
pyhoca-gui[17344] (x2gosessregistry-pylib) NOTICE: registering X2go session Hex...
pyhoca-gui[17344] (x2goclient-pylib) NOTICE: initializing X2go session...
pyhoca-gui[17344] (PyHoca-GUI) WARN: the current release of PyHoca-GUI does not support client configuration

pyhoca-gui[17344] (x2gosessregistry-pylib) NOTICE: using already initially-registered yet-unused session 13a3826c-bb7b-11e0-b531-001de0743f7d
pyhoca-gui[17344] (x2goclient-pylib) NOTICE: initializing X2go session...
pyhoca-gui[17344] (x2gocontrolsession-pylib) NOTICE: connecting to [cygnus]:22
pyhoca-gui[17344] (PyHoca-GUI) NOTICE: [Droog - connect error] not a valid DSA private key file!