I'm trying to setup ssh authentication with key files in stead of username/password. The client is a Windows box running PuTTY and the server is a Ubuntu 12.04 LTS server.
I downloaded puttygen.exe and had it generate a key pair. In
/etc/ssh/sshd_config I have this line:
and on my client's public key file it says this:
---- BEGIN SSH2 PUBLIC KEY ---- Comment: "firstname.lastname@example.org" ssh-rsa AAAAB3NzaC1yc2EAAAABJQAAAIEAr3Qo6T5XU06ZigGOd3eKvfBhFLhg5kWv8lz6 qJ2G9XCbexlPQGanPhh+vcPkhor6+7OmB+WSdHeNO652kTofnauTKcTCbHjsT7cJ GNrO8WVURRh4fabknUHPmauerWQZ6TgRPGaz0aucU+2C+DUo2SKVFDir1vb+4u83 AV1pKxsemail@example.com ---- END SSH2 PUBLIC KEY ----
I copied the part from "ssh-rsa AAA" to "firstname.lastname@example.org" and put that in the file
~/.ssh/authorized_keys on my server (in my own homefolder). In PuTTY under Connection > SSH > Auth I entered the path to the private key it generated on my client and saved the session settings.
I restarted the ssh server with
sudo service ssh restart
Now if I load the profile in PuTTY (I verified the private key is still in Connection > SSH > Auth and that the path is correct) and run the profile, it says
Server refused our key
I tried putting the public key in a file under the directory
./ssh/authorized_keys/ but that didn't help so I used
./ssh/authorized_keys as a file, pasting the key in it. I also tried generating a private/public key pair on the server, putting the public key in
./ssh/authorized_files and loading the private one in PuTTY on my client. Rebooting the server didn't help either.
I found that the error may be solved by putting the key in a place outside the user's home folder but that's only useful if the home folder is encrypted, which this one is not.
Also tried generating a 4096 bit key, thinking perhaps 1024 was too short.
How can I get this to work? Thanks!
sshd: Authentication refused: bad ownership or modes for directory /home/vorkbaard/.ssh
Google tells me
~/.ssh/ should be 700 and and
~/.ssh/authorized_keys should be 600, so I did that. Now
sshd: error: key_read: uudecode AAAAB3N [etc etc etc until about 3/4 of my public key]