Android™

Duplicate openssl pkcs12 –export –in certfile.cer –inkey certfile.key –out certfile.pfx

See more OpenSSL Examples

How to create a PKCS12 (.p12 or .pfx) from a certificate file and private key file: Demonstrates how to duplicate this OpenSSL command:

Duplicate openssl pkcs12 –export –in certfile.cer –inkey certfile.key –out certfile.pfx

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

    CkPrivateKey pkey = new CkPrivateKey();

    // Load the private key from the file.
    success = pkey.LoadAnyFormatFile("certFile.key","");
    if (success != true) {
        Log.i(TAG, pkey.lastErrorText());
        return;
        }

    CkCert cert = new CkCert();
    // The LoadFromFile method auto-recognizes the format...
    success = cert.LoadFromFile("certfile.cer");
    if (success != true) {
        Log.i(TAG, cert.lastErrorText());
        return;
        }

    // We'll need a cert chain object to create the PKCS12, so get it
    // from the cert.  
    CkCertChain certChain;
    certChain = cert.GetCertChain();
    if (!cert.get_LastMethodSuccess()) {
        Log.i(TAG, cert.lastErrorText());
        return;
        }

    // Create the PFX object, add the cert and private key, and write to a .pfx file.
    CkPfx pfx = new CkPfx();

    // The cert(s) are automatically added in the call to AddPrivateKey
    success = pfx.AddPrivateKey(pkey,certChain);
    if (success != true) {
        Log.i(TAG, pfx.lastErrorText());
        return;
        }

    // Write the .pfx to a file.
    String password = "myPassword";
    success = pfx.ToFile(password,"certfile.pfx");
    if (success != true) {
        Log.i(TAG, pfx.lastErrorText());
        return;
        }

    Log.i(TAG, "Success.");

  }

  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."
  }
}