I created a new user on my server, and generated a public (id_rsa.pub) and private key (id_rsa), which I copied to my laptop's .ssh directory. I then created a config file like so:
Host xxx.xxx.xxx RSAAuthentication yes IdentityFile ~/.ssh/id_rsa User xxx
I then attempted to ssh into the server, but got the following error instead:
OpenSSH_7.4p1, LibreSSL 2.5.0 debug1: Reading configuration data /Users/xxx/.ssh/config debug1: /Users/xxx/.ssh/config line 1: Applying options for xxx.xxx.xxx debug1: Reading configuration data /etc/ssh/ssh_config debug1: Connecting to xxx.xxx.xxx [xx.xxx.xx.xx] port 22. debug1: Connection established. debug1: identity file /Users/xxx/.ssh/id_rsa type 1 debug1: key_load_public: No such file or directory debug1: identity file /Users/xxx/.ssh/id_rsa-cert type -1 debug1: Enabling compatibility mode for protocol 2.0 debug1: Local version string SSH-2.0-OpenSSH_7.4 debug1: Remote protocol version 2.0, remote software version OpenSSH_7.2p2 Ubuntu-4ubuntu2.1 debug1: match: OpenSSH_7.2p2 Ubuntu-4ubuntu2.1 pat OpenSSH* compat 0x04000000 debug1: Authenticating to xxx.xxx.xxx:22 as 'xxx' debug1: SSH2_MSG_KEXINIT sent debug1: SSH2_MSG_KEXINIT received debug1: kex: algorithm: firstname.lastname@example.org debug1: kex: host key algorithm: ecdsa-sha2-nistp256 debug1: kex: server->client cipher: email@example.com MAC: <implicit> compression: none debug1: kex: client->server cipher: firstname.lastname@example.org MAC: <implicit> compression: none debug1: expecting SSH2_MSG_KEX_ECDH_REPLY debug1: Server host key: ecdsa-sha2-nistp256 SHA256:n+rA9cq8RQTcnh19HlV2/ASXuktvPF2NhZkxNmZTzBE debug1: Host 'analytics.selfscore.com' is known and matches the ECDSA host key. debug1: Found key in /Users/xxx/.ssh/known_hosts:1 debug1: rekey after 134217728 blocks debug1: SSH2_MSG_NEWKEYS sent debug1: expecting SSH2_MSG_NEWKEYS debug1: SSH2_MSG_NEWKEYS received debug1: rekey after 134217728 blocks debug1: SSH2_MSG_EXT_INFO received debug1: kex_input_ext_info: server-sig-algs=<rsa-sha2-256,rsa-sha2-512> debug1: SSH2_MSG_SERVICE_ACCEPT received debug1: Authentications that can continue: publickey debug1: Next authentication method: publickey debug1: Offering RSA public key: /Users/xxx/.ssh/id_rsa debug1: Authentications that can continue: publickey debug1: No more authentication methods to try. Permission denied (publickey).