(Delphi ActiveX) Load Certificate from PFX (PKCS#12)

Loads a digital certificate (and private key, if available) from a PFX file.(also known as PKCS#12)

Chilkat for Delphi Downloads Chilkat ActiveX DLL for Delphi Chilkat non-ActiveX DLL for Delphi * The examples here use the ActiveX DLL.

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
cert: TChilkatCert;
success: Integer;
pfxFilename: WideString;
pfxPassword: WideString;
privKey: IPrivateKey;
pemPassword: WideString;
pemPath: WideString;

begin
cert := TChilkatCert.Create(Self);

// Load from the PFX file
pfxFilename := '/Users/chilkat/testData/pfx/chilkat_ssl_pwd_is_test.pfx';
pfxPassword := 'test';

// A PFX typically contains certificates in the chain of authentication.
// The Chilkat cert object will choose the certificate w/
// private key farthest from the root authority cert.
// To access all the certificates in a PFX, use the 
// Chilkat certificate store object instead.
success := cert.LoadPfxFile(pfxFilename,pfxPassword);
if (success <> 1) then
  begin
    Memo1.Lines.Add(cert.LastErrorText);
    Exit;
  end;

// Get some information about the digital certificate, 
// then get the private key...

// DN = "Distinguished Name"
Memo1.Lines.Add('SubjectDN:' + cert.SubjectDN);

Memo1.Lines.Add('Common Name:' + cert.SubjectCN);
Memo1.Lines.Add('Issuer Common Name:' + cert.IssuerCN);

Memo1.Lines.Add('Serial Number:' + cert.SerialNumber);

// Now for the private key...

privKey := cert.ExportPrivateKey();
if (cert.LastMethodSuccess = 0) then
  begin
    Memo1.Lines.Add(cert.LastErrorText);
    Exit;
  end;

// The private key object may be used in any Chilkat methods
// (in other objects/classes) that expect a private key argument.

// In this case, save the private key to a PKCS8 Encrypted PEM format file:
pemPassword := 'secret';
pemPath := '/Users/chilkat/testData/pem/chilkat_privKey.pem';
success := privKey.SavePkcs8EncryptedPemFile(pemPassword,pemPath);
if (success <> 1) then
  begin
    Memo1.Lines.Add(privKey.LastErrorText);

    Exit;
  end;

Memo1.Lines.Add('Private key saved to PKCS8 Encrypted PEM...');
end;