Android™
Android™
SSH Authenticate with a SecureString Password and Private Key
See more SSH Examples
Demonstrates the Chilkat Ssh.AuthenticateSecPwPk method, which performs the same combined password/private-key authentication as AuthenticatePwPk but receives the username and password as SecureString objects. The third argument is the 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: This is the
SecureString form of multi-factor SSH authentication: the password is held encrypted in memory and combined with a private key for servers that require both. It is the most protective option when a deployment mandates two-factor SSH and you also want to minimize plaintext credential exposure in the process.Chilkat Android™ Downloads
// Important: Don't forget to include the call to System.loadLibrary
// as shown at the bottom of this code sample.
package com.test;
import android.app.Activity;
import com.chilkatsoft.*;
import android.widget.TextView;
import android.os.Bundle;
public class SimpleActivity extends Activity {
private static final String TAG = "Chilkat";
// Called when the activity is first created.
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
boolean success = false;
// Demonstrates the Ssh.AuthenticateSecPwPk method, which authenticates using SecureString login
// and password objects together with a private key. The 1st argument is the username, the 2nd
// is the password, and the 3rd is an SshKey private key.
CkSsh ssh = new CkSsh();
// 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) {
Log.i(TAG, 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.
CkSshKey privKey = new CkSshKey();
String keyStr = privKey.loadText("qa_data/id_rsa");
if (privKey.get_LastMethodSuccess() == false) {
Log.i(TAG, privKey.lastErrorText());
return;
}
success = privKey.FromOpenSshPrivateKey(keyStr);
if (success == false) {
Log.i(TAG, privKey.lastErrorText());
return;
}
// Place the login and password into SecureString objects.
CkSecureString secureLogin = new CkSecureString();
secureLogin.Append("mySshLogin");
CkSecureString securePassword = new CkSecureString();
securePassword.Append(password);
success = ssh.AuthenticateSecPwPk(secureLogin,securePassword,privKey);
if (success == false) {
Log.i(TAG, ssh.lastErrorText());
return;
}
Log.i(TAG, "Authenticated.");
ssh.Disconnect();
}
static {
System.loadLibrary("chilkat");
// Note: If the incorrect library name is passed to System.loadLibrary,
// then you will see the following error message at application startup:
//"The application <your-application-name> has stopped unexpectedly. Please try again."
}
}