SSH Authenticate with Password and Private Key

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Demonstrates the Chilkat Ssh.AuthenticatePwPk method, which authenticates with a server that requires both a password and a private key. The first argument is the username, the second is the password, and the third is an SshKey private key.

Note: The private-key path is relative to the application's current working directory. Supply the path to your own key file.

Background: Most servers require either a password or a public key, not both — but some high-security configurations mandate multi-factor SSH, combining something you know (the password) with something you have (the key). This method satisfies that policy in one call. As always, the password should come from a secure source rather than a literal in code.

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bool success = false;

//  Demonstrates the Ssh.AuthenticatePwPk method, which authenticates with a server that requires
//  BOTH a password and a private key.  The 1st argument is the username, the 2nd is the
//  password, and the 3rd is an SshKey private key.

Chilkat.Ssh ssh = new Chilkat.Ssh();

//  Connect to the SSH server.  Port 22 is the usual SSH port.
int sshPort = 22;
success = ssh.Connect("ssh.example.com",sshPort);
if (success == false) {
    Debug.WriteLine(ssh.LastErrorText);
    return;
}

//  Normally you would not hard-code the password in source.  You should instead obtain it
//  from an interactive prompt, environment variable, or a secrets vault.
string password = "mySshPassword";

//  Load the SSH private key.  LoadText reads the file's text, which is then imported.
Chilkat.SshKey privKey = new Chilkat.SshKey();
string keyStr = privKey.LoadText("qa_data/id_rsa");
if (privKey.LastMethodSuccess == false) {
    Debug.WriteLine(privKey.LastErrorText);
    return;
}

success = privKey.FromOpenSshPrivateKey(keyStr);
if (success == false) {
    Debug.WriteLine(privKey.LastErrorText);
    return;
}

success = ssh.AuthenticatePwPk("mySshLogin",password,privKey);
if (success == false) {
    Debug.WriteLine(ssh.LastErrorText);
    return;
}

Debug.WriteLine("Authenticated with password and private key.");

ssh.Disconnect();