I tried to use putty also. I select this pem key there and got this:Unable to use key file key.pem (not a private key).I read that it is possible to convert a pem to a pub key. I did it like there:Convert pem key to ssh-rsa formatHow can I convert a PEM key into a RSA key pair?But I got the same error when trying to connect.
SSH: I have a *.pem private key. How to create a SSH connection using it?
ssh;putty