Actually I am trying to login from Windows machine(user –abc) to linux machine(user-xyz) using ssh protocol. I have generated the encryption key using Putty Gen & copied the same in the linux machine : $home/.ssh/authentication_key. But still my script is giving the error: - Permission denied (publickey, password, keyboard-interactive). It would be really great if you can help me on this. regards kapila.kohli@gmail.com