(Delphi ActiveX) Client Certificate in REST (USB Token or Smartcard)

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Demonstrates how to use a client certificate with a REST connection where the certificate and private key are located on a USB token or smart card.

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
rest: TChilkatRest;
socket: TChilkatSocket;
cert: TChilkatCert;
success: Integer;
bTls: Integer;
port: Integer;
maxWaitMs: Integer;
bAutoReconnect: Integer;
responseJson: WideString;

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

// This example shows how to use the Chilkat socket object's connection.
rest := TChilkatRest.Create(Self);
socket := TChilkatSocket.Create(Self);

// Set the certificate to be used for mutual TLS authentication
cert := TChilkatCert.Create(Self);

// If the smartcard or token requires a PIN...
cert.SmartCardPin := '000000';

success := cert.LoadFromSmartcard('');
if (success <> 1) then
  begin
    Memo1.Lines.Add(cert.LastErrorText);
    Exit;
  end;

success := socket.SetSslClientCert(cert.ControlInterface);
if (success <> 1) then
  begin
    Memo1.Lines.Add(socket.LastErrorText);
    Exit;
  end;

// Establish the connection using the socket object (with client certificate authentication).
bTls := 1;
port := 443;
maxWaitMs := 5000;
success := socket.Connect('www.example.com',port,bTls,maxWaitMs);
if (success <> 1) then
  begin
    Memo1.Lines.Add('Connect Failure Error Code: ' + IntToStr(socket.ConnectFailReason));
    Memo1.Lines.Add(socket.LastErrorText);
    Exit;
  end;

bAutoReconnect := 1;

// Use the connection:
success := rest.UseConnection(socket.ControlInterface,bAutoReconnect);
if (success <> 1) then
  begin
    Memo1.Lines.Add(rest.LastErrorText);
    Exit;
  end;

// At this point we are connected and can make REST calls...
// For example..
responseJson := rest.FullRequestNoBody('GET','/someQuery');
if (rest.LastMethodSuccess <> 1) then
  begin
    Memo1.Lines.Add(rest.LastErrorText);
    Exit;
  end;
end;