Why can't I connect via SSH?

Question

SSH

The key on the server in ~/.ssh/authorized_keys is identical to the key on my machine in ~/.ssh/id_rsa.pub.
Writes:

sign_and_send_pubkey: signing failed: agent refused operation
Permission denied (publickey).

Answer 1

Most likely, the rights to the file with the key are incorrect. They should be equal to 600 (and it is desirable to put 700 on the .ssh directory), i.e. the file is not available to anyone except the owner (by default, when creating a file, 640 is usually set), the owner of the file must be the user under which the connection is made.