Rust

Start SSH Keyboard-Interactive Authentication

Demonstrates the Chilkat Ssh.StartKeyboardAuth method, which begins keyboard-interactive authentication. The only argument is the login name. It returns XML describing the server's prompts and whether each response should be echoed. Answer the prompts with ContinueKeyboardAuth.

Background: Keyboard-interactive is the flexible, prompt-driven SSH method — the server sends one or more questions (a password, a one-time code, a security question) and the client answers each. It is how SSH supports two-factor and other challenge-response schemes. The returned XML tells you exactly what to ask the user and whether to mask their input.

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Rust


// Demonstrates the Ssh.StartKeyboardAuth method, which begins keyboard-interactive
// authentication.  The only argument is the login name.  It returns XML describing the server's
// prompts and whether each response should be echoed.

let ssh = chilkat::Ssh::new();

// Connect to the SSH server.  Port 22 is the usual SSH port.
let ssh_port = 22;
if ssh.connect("ssh.example.com", ssh_port).is_err() {
    println!("{}", ssh.last_error_text());
    return;
}

// Begin keyboard-interactive authentication.  The returned XML describes the prompts.
let Ok(info_request_xml) = ssh.start_keyboard_auth("mySshLogin") else {
    println!("{}", ssh.last_error_text());
    return;
};

println!("{}", info_request_xml);

// Answer the prompt(s) with ContinueKeyboardAuth.

ssh.disconnect();