Re: Specify Host Key

[Aris Adamantiadis <aris@xxxxxxxxxxxx>]

Hello,

It was possible to do so in runtime with the old interface
priv.h:int ssh_options_set_algo(ssh_session session, int algo, const
char *list);

However this function call is unfortunately private. If you include
priv.h, you will be able to user
ssh_options_set_algo(session, SSH_HOSTKEYS, "ssh-dss");
ssh_options_set_algo(session, SSH_KEX,"diffie-hellman-group1-sha1");

However we can't guarantee that this will work in future versions of
libssh. If you wish to make it a feature of libssh, it is quite simple
to add this case to the ssh_options_set() function.

Kr,

Aris

Le 21/06/12 14:20, Oliver Gasser a écrit :
> Hello,
> 
> is it possible to specify the host key preference when connecting to a
> server?
> 
> In kex.c there is
> 
> #ifdef HAVE_ECDH
> #define KEY_EXCHANGE "ecdh-sha2-nistp256,diffie-hellman-group1-sha1"
> #define HOSTKEYS "ecdsa-sha2-nistp256,ssh-rsa,ssh-dss"
> #else
> #define KEY_EXCHANGE "diffie-hellman-group1-sha1"
> #define HOSTKEYS "ssh-rsa,ssh-dss"
> #endif
> 
> so they seem to be predefined. Is that correct? And if yes, is it
> possible to circumvent this and specify your own host-key preference
> dynamically?
> 
> Regards,
> Oliver Gasser
>