Delphi ActiveX

Duplicate openssl pkcs12 –export –in certfile.cer –inkey certfile.key –out certfile.pfx

See more OpenSSL Examples

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

Delphi ActiveX

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Chilkat_TLB;

...

procedure TForm1.Button1Click(Sender: TObject);
var
success: Integer;
pkey: TPrivateKey;
cert: TChilkatCert;
certChain: IChilkatCertChain;
pfx: TChilkatPfx;
password: WideString;

begin
success := 0;

// This example assumes the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

pkey := TPrivateKey.Create(Self);

// Load the private key from the file.
success := pkey.LoadAnyFormatFile('certFile.key','');
if (success <> 1) then
  begin
    Memo1.Lines.Add(pkey.LastErrorText);
    Exit;
  end;

cert := TChilkatCert.Create(Self);
// The LoadFromFile method auto-recognizes the format...
success := cert.LoadFromFile('certfile.cer');
if (success <> 1) then
  begin
    Memo1.Lines.Add(cert.LastErrorText);
    Exit;
  end;

// We'll need a cert chain object to create the PKCS12, so get it
// from the cert.  

certChain := cert.GetCertChain();
if (not cert.LastMethodSuccess) then
  begin
    Memo1.Lines.Add(cert.LastErrorText);
    Exit;
  end;

// Create the PFX object, add the cert and private key, and write to a .pfx file.
pfx := TChilkatPfx.Create(Self);

// The cert(s) are automatically added in the call to AddPrivateKey
success := pfx.AddPrivateKey(pkey.ControlInterface,certChain);
if (success <> 1) then
  begin
    Memo1.Lines.Add(pfx.LastErrorText);
    Exit;
  end;

// Write the .pfx to a file.
password := 'myPassword';
success := pfx.ToFile(password,'certfile.pfx');
if (success <> 1) then
  begin
    Memo1.Lines.Add(pfx.LastErrorText);
    Exit;
  end;

Memo1.Lines.Add('Success.');
end;