SSH Tunnel Authenticate with a Private Key

See more SSH Tunnel Examples

Demonstrates the Chilkat SshTunnel.AuthenticatePk method, which authenticates the SSH connection using public-key authentication. The first argument is the username and the second is an SshKey private key. The matching public key must already be installed for the account on the SSH server.

Note: The private-key path is relative to the application's current working directory. Absolute paths may also be used. Supply the path to your own key file.

// 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 SshTunnel.AuthenticatePk method, which authenticates the SSH connection using
    //  public-key authentication.  The 1st argument is the username and the 2nd is an SshKey private
    //  key.  The matching public key must already be installed for the account on the SSH server.

    CkSshTunnel tunnel = new CkSshTunnel();

    //  The tunnel forwards accepted local connections to this destination through the SSH server.
    tunnel.put_DestHostname("db.internal.example.com");
    tunnel.put_DestPort(5432);

    //  Connect to the SSH server.  This performs the TCP/proxy connection and SSH handshake, but
    //  does not authenticate yet.
    int sshPort = 22;
    success = tunnel.Connect("ssh.example.com",sshPort);
    if (success == false) {
        Log.i(TAG, tunnel.lastErrorText());
        return;
        }

    //  Load the SSH private key.  LoadText reads the file's text, which is then imported.
    CkSshKey privKey = new CkSshKey();
    String keyText = privKey.loadText("qa_data/id_rsa");
    if (privKey.get_LastMethodSuccess() == false) {
        Log.i(TAG, privKey.lastErrorText());
        return;
        }

    success = privKey.FromOpenSshPrivateKey(keyText);
    if (success == false) {
        Log.i(TAG, privKey.lastErrorText());
        return;
        }

    success = tunnel.AuthenticatePk("mySshLogin",privKey);
    if (success == false) {
        Log.i(TAG, tunnel.lastErrorText());
        return;
        }

    Log.i(TAG, "Authenticated with a private key.");

    //  After authenticating, call BeginAccepting to start listening for local connections to forward.

    boolean waitForThreadExit = true;
    success = tunnel.CloseTunnel(waitForThreadExit);
    if (success == false) {
        Log.i(TAG, tunnel.lastErrorText());
        return;
        }


  }

  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."
  }
}