(Delphi ActiveX) Sign PDF using ARSS (Aruba Remote Signing Service)

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Demonstrates how to sign a PDF using the Aruba Remote Signing Service (ARSS).

Note: This example requires Chilkat v9.5.0.96 or greater.

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
pdf: TChilkatPdf;
success: Integer;
json: TChilkatJsonObject;
cert: TChilkatCert;
jsonArss: TChilkatJsonObject;

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

pdf := TChilkatPdf.Create(Self);

// Load a PDF to be signed.
success := pdf.LoadFile('qa_data/pdf/hello.pdf');
if (success = 0) then
  begin
    Memo1.Lines.Add(pdf.LastErrorText);
    Exit;
  end;

// Options for signing are specified in JSON.
json := TChilkatJsonObject.Create(Self);

// Indicate that we want an LTV-enabled signature
json.UpdateBool('ltvOcsp',1);

// Define the appearance of the signature.
json.UpdateInt('page',1);
json.UpdateString('appearance.y','top');
json.UpdateString('appearance.x','left');
json.UpdateString('appearance.fontScale','10.0');
json.UpdateString('appearance.text[0]','Digitally signed by: cert_cn');
json.UpdateString('appearance.text[1]','current_dt');
json.UpdateString('appearance.text[2]','This is an LTV-enabled signature.');

// Load the certificate used for signing.  The certificate's private key is stored on 
// the Aruba.it server and the signing will happen remotely using the
// ARSS (Aruba Remote Signing Service).
// However, we still need the certificate locally (without private key).
cert := TChilkatCert.Create(Self);
success := cert.LoadFromFile('qa_data/certs/myCert.cer');
if (success = 0) then
  begin
    Memo1.Lines.Add(cert.LastErrorText);
    Exit;
  end;

// To sign using the Aruba Remote Signing Service, 
// add the following lines of code to specify your authentication credentials,
// and the ID of the certificate w/ private key on the server to be used.
jsonArss := TChilkatJsonObject.Create(Self);

// Set the "service" equal to "ARSS" to tell Chilkat to use ARSS for signing.
jsonArss.UpdateString('service','ARSS');
// Specify the certificate ID, such as "AS0"
// This certificate should match the certificate loaded in the above code.
jsonArss.UpdateString('certID','YOUR_ARSS_CERT_ID');
jsonArss.UpdateString('otpPwd','YOUR_OTP_PWD');
jsonArss.UpdateString('typeOtpAuth','demoprod');
jsonArss.UpdateString('user','YOUR_ARSS_USERNAME');
jsonArss.UpdateString('userPWD','YOUR_ARSS_PASSWORD');
success := cert.SetCloudSigner(jsonArss.ControlInterface);

// Tell the pdf object to use the certificate for signing.
success := pdf.SetSigningCert(cert.ControlInterface);
if (success = 0) then
  begin
    Memo1.Lines.Add(pdf.LastErrorText);
    Exit;
  end;

// Chilkat will build the signed PDF locally, but will (internally) use ARSS
// to do the RSA sign hash operation.
success := pdf.SignPdf(json.ControlInterface,'qa_output/hello_ltv_signed.pdf');
if (success = 0) then
  begin
    Memo1.Lines.Add(pdf.LastErrorText);
    Exit;
  end;

Memo1.Lines.Add('The PDF has been successfully cryptographically signed with long-term validation.');
end;