Pascal (Lazarus/Delphi)
Sign PDF for ICP-Brasil

Sign a PDF to create a signed PDF compliant with the ICP-Brasil Digital Signature Standard Conformity Checker. (Verificador de Conformidade do Padrão de Assinatura Digital ICP-Brasil)
Chilkat Pascal (Lazarus/Delphi) Downloads

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Pascal (Lazarus/Delphi)
program ChilkatDemo;

// Demonstrates using the Chilkat Pascal wrapper via the C bridge DLL.
// Builds as a console application under Lazarus (FPC) or Delphi.

{$IFDEF FPC}
  {$MODE DELPHI}
{$ENDIF}
{$APPTYPE CONSOLE}

uses
  {$IFDEF UNIX}
  cthreads,
  {$ENDIF}
  SysUtils,
  CkDllLoader,
  Chilkat.Pdf,
  Chilkat.Cert,
  Chilkat.JsonObject;

// ---------------------------------------------------------------------------

procedure RunDemo;
var
  success: Boolean;
  pdf: TPdf;
  json: TJsonObject;
  cert: TCert;

begin
  success := False;

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

  //  The signed PDF produced by this example should be verifiable at https://validar.iti.gov.br/
  pdf := TPdf.Create;

  //  Load a PDF to be signed.
  //  The "hello.pdf" is available at https://chilkatsoft.com/hello.pdf
  success := pdf.LoadFile('qa_data/pdf/hello.pdf');
  if (success = False) then
    begin
      WriteLn(pdf.LastErrorText);
      Exit;
    end;

  json := TJsonObject.Create;

  //  Define the appearance and location of the signature.
  json.UpdateInt('page',1);
  json.UpdateString('appearance.y','bottom');
  json.UpdateString('appearance.x','middle');
  json.UpdateString('appearance.fontScale','9.0');
  json.UpdateString('appearance.text[0]','Digitally signed by: cert_cn');
  json.UpdateString('appearance.text[1]','current_dt');
  json.UpdateString('appearance.image','document-accepted');
  json.UpdateString('appearance.imagePlacement','left');
  json.UpdateString('appearance.imageOpacity','100');

  //  Add the CMS options required for ICP-Brasil
  json.UpdateInt('contentType',1);
  json.UpdateInt('messageDigest',1);
  json.UpdateInt('signingCertificateV2',1);
  json.UpdateBool('ltvOcsp',True);

  //  Listed here are the currently existing profiles. (Chilkat will add additional ICP Brasil policy profiles in future versions as new ones are created.)
  //  See https://www.gov.br/iti/pt-br/assuntos/repositorio/artefatos-de-assinatura-digital for more information.
  //  
  //  PA_AD_RA_v1_1 --> 2.16.76.1.7.1.5.1.1
  //  PA_AD_RA_v1_2 --> 2.16.76.1.7.1.5.1.2
  //  PA_AD_RA_v2_0 --> 2.16.76.1.7.1.5.2
  //  PA_AD_RA_v2_1 --> 2.16.76.1.7.1.5.2.1
  //  PA_AD_RA_v2_2 --> 2.16.76.1.7.1.5.2.2
  //  PA_AD_RA_v2_3 --> 2.16.76.1.7.1.5.2.3
  //  PA_AD_RA_v2_4 --> 2.16.76.1.7.1.5.2.4

  //  PA_AD_RB_v1_1 --> 2.16.76.1.7.1.1.1.1
  //  PA_AD_RB_v2_0 --> 2.16.76.1.7.1.1.2
  //  PA_AD_RB_v2_1 --> 2.16.76.1.7.1.1.2.1
  //  PA_AD_RB_v2_2 --> 2.16.76.1.7.1.1.2.2
  //  PA_AD_RB_v2_3 --> 2.16.76.1.7.1.1.2.3

  //  PA_AD_RC_v1_1 --> 2.16.76.1.7.1.4.1.1
  //  PA_AD_RC_v2_0 --> 2.16.76.1.7.1.4.2
  //  PA_AD_RC_v2_1 --> 2.16.76.1.7.1.4.2.1
  //  PA_AD_RC_v2_2 --> 2.16.76.1.7.1.4.2.2
  //  PA_AD_RC_v2_3 --> 2.16.76.1.7.1.4.2.3

  //  PA_AD_RT_v1_1 --> 2.16.76.1.7.1.2.1.1
  //  PA_AD_RT_v2_0 --> 2.16.76.1.7.1.2.2
  //  PA_AD_RT_v2_1 --> 2.16.76.1.7.1.2.2.1
  //  PA_AD_RT_v2_2 --> 2.16.76.1.7.1.2.2.2
  //  PA_AD_RT_v2_3 --> 2.16.76.1.7.1.2.2.3

  //  PA_AD_RV_v1_1 --> 2.16.76.1.7.1.3.1.1
  //  PA_AD_RV_v2_0 --> 2.16.76.1.7.1.3.2
  //  PA_AD_RV_v2_1 --> 2.16.76.1.7.1.3.2.1
  //  PA_AD_RV_v2_2 --> 2.16.76.1.7.1.3.2.2
  //  PA_AD_RV_v2_3 --> 2.16.76.1.7.1.3.2.3

  //  PA_PAdES_AD_RA_v1_0 --> 2.16.76.1.7.1.14.1
  //  PA_PAdES_AD_RA_v1_1 --> 2.16.76.1.7.1.14.1.1
  //  PA_PAdES_AD_RA_v1_2 --> 2.16.76.1.7.1.14.1.2
  //  PA_PAdES_AD_RB_v1_0 --> 2.16.76.1.7.1.11.1
  //  PA_PAdES_AD_RB_v1_1 --> 2.16.76.1.7.1.11.1.1
  //  PA_PAdES_AD_RC_v1_0 --> 2.16.76.1.7.1.13.1
  //  PA_PAdES_AD_RC_v1_1 --> 2.16.76.1.7.1.13.1.1
  //  PA_PAdES_AD_RC_v1_2 --> 2.16.76.1.7.1.13.1.2
  //  PA_PAdES_AD_RT_v1_0 --> 2.16.76.1.7.1.12.1
  //  PA_PAdES_AD_RT_v1_1 --> 2.16.76.1.7.1.12.1.1

  //  Set the policy profile name
  //  ---------------------------------------------------
  //  Note: On 24-May-2024, I was informed that adding the "policyId.profile"
  //  causes the PDF signature to fail validation at https://validar.iti.gov.br/
  //  Perhaps something changed in the years since this example was originally written and tested to be working.
  //  You may need to omit the "policyId.profile".
  //  ---------------------------------------------------
  json.UpdateString('policyId.profile','PA_PAdES_AD_RB_v1_1');

  //  Load the signing certificate. (Use your own certificate.)
  //  Note: If loading from a smart card, call LoadFromSmartcard instead, and make sure to use Chilkat v9.5.0.88 or later.
  cert := TCert.Create;
  success := cert.LoadPfxFile('qa_data/pfx/myPdfSigningCert.pfx','pfx_password');
  if (success = False) then
    begin
      WriteLn(cert.LastErrorText);
      Exit;
    end;

  //  Tell the pdf object to use the certificate for signing.
  success := pdf.SetSigningCert(cert);
  if (success = False) then
    begin
      WriteLn(pdf.LastErrorText);
      Exit;
    end;

  success := pdf.SignPdf(json,'qa_output/hello_signed.pdf');
  if (success = False) then
    begin
      WriteLn(pdf.LastErrorText);
      Exit;
    end;

  WriteLn('The PDF has been successfully cryptographically signed.');


  pdf.Free;
  json.Free;
  cert.Free;

end;

// ---------------------------------------------------------------------------

begin

  try
    RunDemo;
  except
    on E: Exception do
      WriteLn('Unhandled exception: ', E.ClassName, ': ', E.Message);
  end;

  WriteLn;
  {$IFDEF MSWINDOWS}
  WriteLn('Press Enter to exit...');
  ReadLn;
  {$ENDIF}
end.