SSH Authentication using X.509 Certificates

See more SSH Examples

Demonstrates authenticating with an SSH/SFTP server using the private key of an X.509 certificate. The certificate and key are loaded from a .pfx, the private key is exported as PEM, and that key is used for public-key authentication. See X.509v3 Certificates for SSH Authentication for more information.

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/SFTP server using the private key of an X.509
    //  certificate.

    CkSsh ssh = new CkSsh();

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

    //  Load the certificate and its private key from a .pfx file.  The PFX password should come
    //  from a secure source rather than being hard-coded.
    //  Note: Chilkat can load certificates and private keys from many sources, including smart
    //  cards and USB tokens (HSMs).
    String pfxPassword = "myPfxPassword";
    CkCert cert = new CkCert();
    success = cert.LoadPfxFile("qa_data/pfx/example.pfx",pfxPassword);
    if (success == false) {
        Log.i(TAG, cert.lastErrorText());
        return;
        }

    //  Get the certificate's private key as PEM, to be used for SSH authentication.  The
    //  corresponding public key is installed on the server.
    String privKeyPem = cert.getPrivateKeyPem();
    if (cert.get_LastMethodSuccess() == false) {
        Log.i(TAG, cert.lastErrorText());
        return;
        }

    CkSshKey key = new CkSshKey();
    success = key.FromOpenSshPrivateKey(privKeyPem);
    if (success == false) {
        Log.i(TAG, key.lastErrorText());
        return;
        }

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

    Log.i(TAG, "Public-key authentication successful.");

    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."
  }
}