Android™

Convert Cert + Key to PEM and PFX

See more Certificates Examples

This example is based on the following question from a Chilkat customer:

We receive 2 files :

    MyCertificate.p7b
    MyCertificate-privatekey.pkey

We have to transform these certificate like this:

First convert it to PEM like this:

openssl pkcs7 -in MyCertificate.p7b -inform DER -out MyCertificate.pem -print_certs

Now we get MyCertificate.pem

Last step, we need to convert it to pfx file:

openssl pkcs12 -export -inkey moncertificat-privatekey.pkey  -in  moncertificat.pem -out moncertificat.pfx

Is there a way to make all these steps with Chilkat ?

I will be nice to include this directly in our software instead of askig the user to do it manualy.

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;

    CkCert cert = new CkCert();
    CkPrivateKey privKey = new CkPrivateKey();

    // Load any type of certificate (.cer, .p7b, .pem, etc.) by calling LoadFromFile.
    success = cert.LoadFromFile("qa_data/certs/sample_cert_a.cer");
    if (success != true) {
        Log.i(TAG, cert.lastErrorText());
        return;
        }

    // Load the private key.
    // (The various privKey methods that load from a file will automatically detect
    // the format.  It doesn't actually matter if you try to load a non-PKCS8 format private key
    // by calling LoadPkcs8EncryptedFile -- internally Chilkat will detect the format and will load
    // based on what it finds.)
    success = privKey.LoadPkcs8EncryptedFile("qa_data/certs/sample_key_a.pkcs8","password");
    if (success != true) {
        Log.i(TAG, privKey.lastErrorText());
        return;
        }

    // Write the cert as PEM.
    success = cert.ExportCertPemFile("qa_output/cert.pem");

    // Or get the PEM string directly...
    Log.i(TAG, cert.exportCertPem());

    // Associate the private key with the cert object.
    success = cert.SetPrivateKey(privKey);
    if (success != true) {
        Log.i(TAG, cert.lastErrorText());
        return;
        }

    // Write the cert + private key to a .pfx file.
    success = cert.ExportToPfxFile("qa_data/myPfx.pfx","password",true);
    if (success != true) {
        Log.i(TAG, cert.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."
  }
}