Re: Login failure using private key

[Andreas Schneider <asn@xxxxxxxxxxxxxx>]

On Wednesday, September 26, 2018 1:22:40 PM CEST Pieter Cardoen wrote:
> Hello
> 
> I am trying to authenticate to my target system using libssh. My target
> system is configured to use login without password. Using openssh ssh
> client, I can login: "ssh -i <path to private key file> root@<ip address>"
> gives me the prompt.
> 
> However I am not succeeding to login to the target system using libssh. I
> was following this tutorial but it wasn't that helpful because I ran into
> multiple errors:
> http://api.libssh.org/master/libssh_tutor_authentication.html
> 
> I am able to load the public key using ssh_pki_import_pubkey_file with
> "id_rsa.pub". Return value SSH_OK. However if I try to execute
> ssh_userauth_try_publickey, I get: [2018/09/26 13:15:06.226731, 1]
> ssh_packet_userauth_failure:  Access denied for 'publickey'. Authentication
> that can continue: publickey,password [2018/09/26 13:15:06.226816, 2]
> ssh_packet_userauth_failure:  Access denied for 'publickey'. Authentication
> that can continue: publickey,password
> 
> This seams fairly reasonable as I used the public key of my PC to
> authenticate. However, I don't have a public key of my target system, only
> the private key.

Works just fine here. I can successfully authenticate using public keys. Did 
you check the server log why it rejected your public key?