After you set up the public key authentication in any Unix server, if it keeps asking for your password even after you put your public key in the ~/.ssh/authorized_keys file you need to check the file permissions.
To fix this problem, check if the owner and the file permission is set right on:
Home directory (700)
.ssh directory (700)
authorized_keys file (600)
Image may be NSFW.
Clik here to view.

Clik here to view.

Clik here to view.

Clik here to view.
