Load Certificate from PFX (PKCS#12)

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

uses
    Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
    Dialogs, StdCtrls,
    CHILKATCERTIFICATELib_TLB,
    OleCtrls;

...

procedure TForm1.Button1Click(Sender: TObject);
var
cert: TChilkatCert;
success: Integer;
pfxFilename: String;
pfxPassword: String;
privKey: CHILKATCERTIFICATELib_TLB.IPrivateKey;
pemPassword: String;
pemPath: String;

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() As CHILKATCERTIFICATELib_TLB.IPrivateKey;
if (privKey = nil ) 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;