PHP

SSH Authenticate with Password and Private Key

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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<?php

use Chilkat2\Ssh;
use Chilkat2\SshKey;

// 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.

$ssh = new Ssh();

// Connect to the SSH server.  Port 22 is the usual SSH port.
$sshPort = 22;
try {
    $ssh->Connect('ssh.example.com', $sshPort);

    // 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.
    $password = 'mySshPassword';

    // Load the SSH private key.  LoadText reads the file's text, which is then imported.
    $privKey = new SshKey();
    $keyStr = $privKey->LoadText('qa_data/id_rsa');

    $privKey->FromOpenSshPrivateKey($keyStr);

    $ssh->AuthenticatePwPk('mySshLogin', $password, $privKey);
} catch (\Chilkat2\Exception $e) {
    echo $e->getMessage(), "\n";
    exit;
}

echo "Authenticated with password and private key.\n";

$ssh->Disconnect();