Java

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.

Java

import com.chilkatsoft.*;

public class ChilkatExample {

  static {
    try {
        System.loadLibrary("chilkat");
    } catch (UnsatisfiedLinkError e) {
      System.err.println("Native code library failed to load.\n" + e);
      System.exit(1);
    }
  }

  public static void main(String argv[])
  {
    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) {
        System.out.println(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) {
        System.out.println(privKey.lastErrorText());
        return;
        }

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

    // Or get the PEM string directly...
    System.out.println(cert.exportCertPem());

    // Associate the private key with the cert object.
    success = cert.SetPrivateKey(privKey);
    if (success != true) {
        System.out.println(cert.lastErrorText());
        return;
        }

    // Write the cert + private key to a .pfx file.
    success = cert.ExportToPfxFile("qa_data/myPfx.pfx","password",true);
    if (success != true) {
        System.out.println(cert.lastErrorText());
        return;
        }

    System.out.println("Success.");
  }
}