Android™

Import an SSH Key to an HSM using PKCS11

See more PKCS11 Examples

Demonstrates how to import an SSH private key to an HSM (smartcard or token).

Note: This example requires Chilkat v9.5.0.96 or later.

Android™

// 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.

    // Note: Chilkat's PKCS11 implementation runs on Windows, Linux, Mac OS X, and other supported operating systems.

    CkPkcs11 pkcs11 = new CkPkcs11();

    // Use the PKCS11 driver (.dll, .so, .dylib) for your particular HSM.
    // For example:
    pkcs11.put_SharedLibPath("C:/Program Files (x86)/Gemalto/IDGo 800 PKCS#11/IDPrimePKCS11.dll");

    // Use your HSM's PIN.
    String pin = "0000";

    // Normal user = 1
    int userType = 1;

    // Establish a logged-on user session with the HSM.
    success = pkcs11.QuickSession(userType,pin);
    if (success == false) {
        Log.i(TAG, pkcs11.lastErrorText());
        return;
        }

    // Create a PKCS11 template for importing the SSH key.
    CkJsonObject jsonTemplate = new CkJsonObject();

    // Indicate the key is to be stored on the token (i.e. it is not a session-only key)
    jsonTemplate.UpdateBool("token",true);
    // The key should have the ability to sign
    jsonTemplate.UpdateBool("sign",true);

    // Let's provide a few attributes to help us find the this key at a later time.
    // See SSH Public-Key Authentication using an HSM

    // The ID is byte data, so it should be base64 or hex.
    // Specify "id" if passing base64 data, "id_hex" for hexidecimal, or "id_ascii" for directly copying the ascii bytes of the string.
    // You can provide any ID of your choice.  It is optional.
    jsonTemplate.UpdateString("id_hex","0A0B0C0D01020304");

    // Optionally specify a label.
    jsonTemplate.UpdateString("label","MySshKey");

    // Load the SSH key to be imported to the HSM (smartcard or token)
    CkSshKey sshKey = new CkSshKey();
    sshKey.put_Password("password_of_the_encrypted_ppk_file");
    String ppkContents = sshKey.loadText("c:/my_ssh_keys/someSshKey.ppk");
    success = sshKey.FromPuttyPrivateKey(ppkContents);
    if (success == false) {
        Log.i(TAG, sshKey.lastErrorText());
        return;
        }

    // Import the SSH private key onto the HSM.
    // The PKCS11 handle to the imported private key is returned.
    // A 0 is returned on failure.
    int privKeyHandle = pkcs11.ImportSshKey(sshKey,jsonTemplate);
    if (privKeyHandle == 0) {
        Log.i(TAG, pkcs11.lastErrorText());
        return;
        }

    // The private key handle is only valid during the PKCS11 session.
    // If you wish to use the private key in another PKCS11 session,
    // you'll first need to find it.  See  SSH Public-Key Authentication using a Smartcard
    Log.i(TAG, "private key handle: " + String.valueOf(privKeyHandle));

    Log.i(TAG, "Successfully imported the SSH key onto the HSM.");

    pkcs11.Logout();
    pkcs11.CloseSession();

  }

  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."
  }
}