SSHing into my system succeeds but even without the
-v flag I get
key_load_public: invalid format message. Below is the output w/ using the verbose flag.
debug1: key_load_public: No such file or directory
debug1: identity file /home/myname/.ssh/private_rsa_key-cert type -1
seems to be the problem as I don't have such a file. However, I checked w/ another system and I also get the same two above lines. However there is no
key_load_public: invalid format before that, which is what I actually want to get rid of. Permissions on the authorized_keys file on both remote systems looks the same, permissions on the private_keys look the same too.
$ ssh -v desired_host OpenSSH_7.2p2, OpenSSL 1.0.2g 1 Mar 2016 debug1: Reading configuration data /home/myname/.ssh/config debug1: /home/dli/.ssh/config line 16: Applying options for desired_host debug1: Reading configuration data /etc/ssh_config debug1: Connecting to desired_host [X.X.X.X] port 22. debug1: Connection established. key_load_public: invalid format debug1: identity file /home/myname/.ssh/private_rsa_key type -1 debug1: key_load_public: No such file or directory debug1: identity file /home/myname/.ssh/private_rsa_key-cert type -1 debug1: Enabling compatibility mode for protocol 2.0 debug1: Local version string SSH-2.0-OpenSSH_7.2 debug1: Remote protocol version 2.0, remote software version OpenSSH_5.3 debug1: match: OpenSSH_5.3 pat OpenSSH_5* compat 0x0c000000 debug1: Authenticating to desired_host:22 as 'myname' debug1: SSH2_MSG_KEXINIT sent debug1: SSH2_MSG_KEXINIT received debug1: kex: algorithm: diffie-hellman-group-exchange-sha256 debug1: kex: host key algorithm: ssh-rsa debug1: kex: server->client cipher: aes128-ctr MAC: email@example.com compression: none debug1: kex: client->server cipher: aes128-ctr MAC: firstname.lastname@example.org compression: none debug1: SSH2_MSG_KEX_DH_GEX_REQUEST(2048<3072<8192) sent debug1: got SSH2_MSG_KEX_DH_GEX_GROUP debug1: SSH2_MSG_KEX_DH_GEX_INIT sent debug1: got SSH2_MSG_KEX_DH_GEX_REPLY debug1: Server host key: ssh-rsa SHA256:EmG/FBK0OCXtaAqAkfHKxoXKLGiZiHUsQpObK6aWd30 debug1: Host 'desired_host' is known and matches the RSA host key. debug1: Found key in /home/myname/.ssh/known_hosts:39 debug1: rekey after 4294967296 blocks debug1: SSH2_MSG_NEWKEYS sent debug1: expecting SSH2_MSG_NEWKEYS debug1: rekey after 4294967296 blocks debug1: SSH2_MSG_NEWKEYS received debug1: SSH2_MSG_SERVICE_ACCEPT received debug1: Authentications that can continue: publickey,gssapi-keyex,gssapi-with-mic,password debug1: Next authentication method: publickey debug1: Trying private key: /home/myname/.ssh/private_rsa_key debug1: Authentication succeeded (publickey). Authenticated to desired_host ([X.X.X.X]:22). debug1: channel 0: new [client-session] debug1: Requesting email@example.com debug1: Entering interactive session. debug1: pledge: network