Android™

PKCS11 Find Private Key by Label

See more PKCS11 Examples

Demonstrates how to find a private key based on a user-specified label.

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;
        }

    // Provide a template to find a PKCS11 object.
    CkJsonObject jsonTemplate = new CkJsonObject();

    // Find an RSA private key with the label "MySshKey".
    // Here's an example of how the key was originally imported: 
    // PKCS11 Import SSH Key
    jsonTemplate.UpdateString("class","private_key");
    jsonTemplate.UpdateString("key_type","rsa");
    jsonTemplate.UpdateString("label","MySshKey");

    int privKeyHandle = pkcs11.FindObject(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:  
    Log.i(TAG, "private key handle: " + String.valueOf(privKeyHandle));

    // Do whatever you wish with the private key handle...
    // ...
    // ...

    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."
  }
}