Dart

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.

Dart

import 'package:chilkat/chilkat.dart';

void main() {
  final cert = CkCert();
  final privKey = CkPrivateKey();

  // Load any type of certificate (.cer, .p7b, .pem, etc.) by calling LoadFromFile.
  try {
    cert.loadFromFile('qa_data/certs/sample_cert_a.cer');
  } on ChilkatException catch (e) {
    print(e.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.)
  try {
    privKey.loadPkcs8EncryptedFile('qa_data/certs/sample_key_a.pkcs8', 'password');
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  // Write the cert as PEM.
  cert.exportCertPemFile('qa_output/cert.pem');

  // Or get the PEM string directly...
  print(cert.exportCertPem());

  // Associate the private key with the cert object.
  try {
    cert.setPrivateKey(privKey);
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  // Write the cert + private key to a .pfx file.
  try {
    cert.exportToPfxFile('qa_data/myPfx.pfx', 'password', true);
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  print('Success.');
}