Use a PuTTY Key for SSH Authentication

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Demonstrates authenticating with an SSH server using a username and a PuTTY (.ppk) private key. The key is imported with FromPuttyPrivateKey — setting Password first if it is encrypted — and passed to AuthenticatePk.

Note: The file paths are relative to the application's current working directory. Supply the paths to your own files.

// 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;

    //  This example requires the Chilkat API to have been previously unlocked.
    //  See Global Unlock Sample for sample code.

    //  Demonstrates authenticating with an SSH server using a username and a PuTTY (.ppk) private
    //  key.  The private key serves as the credential; the username identifies the account on the
    //  server.

    CkSsh ssh = new CkSsh();

    //  LoadText is a convenience method that reads any text file into a string.  It does not itself
    //  load the key.
    CkSshKey puttyKey = new CkSshKey();
    String ppkText = puttyKey.loadText("qa_data/ppk/putty_private_secret.ppk");
    if (puttyKey.get_LastMethodSuccess() == false) {
        Log.i(TAG, puttyKey.lastErrorText());
        return;
        }

    //  Set the password before importing an encrypted .ppk.  This should come from a secure source
    //  rather than being hard-coded.
    puttyKey.put_Password("myKeyPassword");

    success = puttyKey.FromPuttyPrivateKey(ppkText);
    if (success == false) {
        Log.i(TAG, puttyKey.lastErrorText());
        return;
        }

    String sshHostname = "ssh.example.com";
    int sshPort = 22;
    success = ssh.Connect(sshHostname,sshPort);
    if (success == false) {
        Log.i(TAG, ssh.lastErrorText());
        return;
        }

    //  The corresponding public key must already be installed on the SSH server for the account.
    success = ssh.AuthenticatePk("mySshLogin",puttyKey);
    if (success == false) {
        Log.i(TAG, ssh.lastErrorText());
        return;
        }

    Log.i(TAG, "Connection and authentication with the SSH server completed.");

    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."
  }
}