(C# UWP/WinRT) Duplicate openssl pkcs12 –export –in certfile.cer –inkey certfile.key –out certfile.pfx

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

Chilkat Universal Windows Platform (UWP) / WinRT Downloads Chilkat for the Universal Windows Platform (UWP)

bool success;

// The PFX class requires the software to be unlocked..
Chilkat.Global global = new Chilkat.Global();
success = global.UnlockBundle("Anything for 30-day trial");
if (success != true) {
    Debug.WriteLine(global.LastErrorText);
    return;
}

Chilkat.PrivateKey pkey = new Chilkat.PrivateKey();

// Load the private key from the file.
// There are several methods for loading private keys from a file:
//     LoadPkcs8File
//     LoadRsaDerFile
//     LoadPemFile
//     LoadPvkFile
//     LoadXmlFile
// In actuality, it doesn't matter which one is called. In all cases
// Chilkat will automatically recognize the format of the private key
// file and load it correctly.  Therefore, even if actual contents
// of the file does not agree with the name of the method, it will still work.
// The only way it won't work is if it's not actually a private key file
// (perhaps it is only a public key file), or perhaps the private key
// file is encrypted and requires a password.  In that case, you would
// call one of the Chilkat methods to load the encrypted private key file
// (and these methods include an argument to specify the password).
success = pkey.LoadPkcs8File("certFile.key");
if (success != true) {
    Debug.WriteLine(pkey.LastErrorText);
    return;
}

Chilkat.Cert cert = new Chilkat.Cert();
// The LoadFromFile method auto-recognizes the format...
success = cert.LoadFromFile("certfile.cer");
if (success != true) {
    Debug.WriteLine(cert.LastErrorText);
    return;
}

// We'll need a cert chain object to create the PKCS12, so get it
// from the cert.  
Chilkat.CertChain certChain = null;
certChain = cert.GetCertChain();
if (!cert.LastMethodSuccess) {
    Debug.WriteLine(cert.LastErrorText);
    return;
}

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

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

// Write the .pfx to a file.
string password = "myPassword";
success = pfx.ToFile(password,"certfile.pfx");
if (success != true) {
    Debug.WriteLine(pfx.LastErrorText);
    return;
}

Debug.WriteLine("Success.");