SSHJ - Keypair login to EC2 instance

Question

I have a pem file that looks like the one in SSHJ tests (though I don\'t see it being referenced): https://github.com/shikhar/sshj/blob/master/src/test/resources/hostkey.pem

Answer 1

I have successfully connected to an Amazon EC2 instance using the following:

final SSHClient ssh = new SSHClient();
ssh.addHostKeyVerifier("XX:XX:XX:XX:XX:XX:XX:XX:XX:XX:XX:XX");

ssh.connect("host");

PKCS8KeyFile keyFile = new PKCS8KeyFile();
keyFile.init(new File("server_pem.pem"));
ssh.auth("ec2-user", new AuthPublickey(keyFile));

try {
    final Session session = ssh.startSession();
    try {
        final Command command = session.exec("whoami");
        String response = IOUtils.readFully(command.getInputStream()).toString();
        command.join(10, TimeUnit.SECONDS);
        return response;
    } finally {
        session.close();
    }
} finally {
    ssh.disconnect();
}