(AutoIt) Convert Cert + Key to PEM and PFX

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.

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

$oCert = ObjCreate("Chilkat.Cert")
$oPrivKey = ObjCreate("Chilkat.PrivateKey")

; Load any type of certificate (.cer, .p7b, .pem, etc.) by calling LoadFromFile.
Local $bSuccess = $oCert.LoadFromFile("qa_data/certs/sample_cert_a.cer")
If ($bSuccess <> True) Then
    ConsoleWrite($oCert.LastErrorText & @CRLF)
    Exit
EndIf

; 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.)
$bSuccess = $oPrivKey.LoadPkcs8EncryptedFile("qa_data/certs/sample_key_a.pkcs8","password")
If ($bSuccess <> True) Then
    ConsoleWrite($oPrivKey.LastErrorText & @CRLF)
    Exit
EndIf

; Write the cert as PEM.
$bSuccess = $oCert.ExportCertPemFile("qa_output/cert.pem")

; Or get the PEM string directly...
ConsoleWrite($oCert.ExportCertPem() & @CRLF)

; Associate the private key with the cert object.
$bSuccess = $oCert.SetPrivateKey($oPrivKey)
If ($bSuccess <> True) Then
    ConsoleWrite($oCert.LastErrorText & @CRLF)
    Exit
EndIf

; Write the cert + private key to a .pfx file.
$bSuccess = $oCert.ExportToPfxFile("qa_data/myPfx.pfx","password",True)
If ($bSuccess <> True) Then
    ConsoleWrite($oCert.LastErrorText & @CRLF)
    Exit
EndIf

ConsoleWrite("Success." & @CRLF)