How to ssh connect through python Paramiko with ppk public key

Question

i'm using Paramiko to connect through ssh to a server.

Basic authentication works well, but i can't understand how to connect with public key.

When i connect with putty, the server tell me this:

Using username "root". Authenticating with public key "[email protected]" Passphrase for key "[email protected]": [i've inserted the passphrase here] Last login: Mon Dec  5 09:25:18 2011 from ... 

I connect to it with this ppk file:

PuTTY-User-Key-File-2: ssh-rsa Encryption: aes256-cbc Comment: [email protected] Public-Lines: 4 [4 lines key] Private-Lines: 8 [8 lines key] Private-MAC: [hash] 

With basic auth the error i get (from the log) is:

DEB [20111205-09:48:44.328] thr=1   paramiko.transport: userauth is OK DEB [20111205-09:48:44.927] thr=1   paramiko.transport: Authentication type (password) not permitted. DEB [20111205-09:48:44.927] thr=1   paramiko.transport: Allowed methods: ['publickey', 'gssapi-with-mic'] 

I've tried to include that ppk file and set to auth_public_key, but didn't work.

Can you help me?

Answer 1

Ok @Adam and @Kimvais were right, Paramiko cannot parse .ppk files.

So the way to go (thanks to @JimB too) is to convert .ppk file to OpenSSH private key format; this can be achieved using PuTTYgen as described here.

Then it's very simple getting connected with it:

import paramiko ssh = paramiko.SSHClient()  ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())  ssh.connect('<hostname>', username='<username>', password='<password>', key_filename='<path/to/openssh-private-key-file>')  stdin, stdout, stderr = ssh.exec_command('ls') print stdout.readlines() ssh.close() 

Answer 2

For me I doing this:

import paramiko hostname = 'my hostname or IP'  myuser   = 'the user to ssh connect' mySSHK   = '/path/to/sshkey.pub' sshcon   = paramiko.SSHClient()  # will create the object sshcon.set_missing_host_key_policy(paramiko.AutoAddPolicy()) # no known_hosts error sshcon.connect(hostname, username=myuser, key_filename=mySSHK) # no passwd needed 

works for me pretty ok