Perl

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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Perl

use chilkat();

$success = 0;

#  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 = chilkat::CkSsh->new();

#  Connect to the SSH server.  Port 22 is the usual SSH port.
$sshPort = 22;
$success = $ssh->Connect("ssh.example.com",$sshPort);
if ($success == 0) {
    print $ssh->lastErrorText() . "\r\n";
    exit;
}

#  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 = chilkat::CkSshKey->new();
$keyStr = $privKey->loadText("qa_data/id_rsa");
if ($privKey->get_LastMethodSuccess() == 0) {
    print $privKey->lastErrorText() . "\r\n";
    exit;
}

$success = $privKey->FromOpenSshPrivateKey($keyStr);
if ($success == 0) {
    print $privKey->lastErrorText() . "\r\n";
    exit;
}

$success = $ssh->AuthenticatePwPk("mySshLogin",$password,$privKey);
if ($success == 0) {
    print $ssh->lastErrorText() . "\r\n";
    exit;
}

print "Authenticated with password and private key." . "\r\n";

$ssh->Disconnect();