Pascal (Lazarus/Delphi)

Create CAdES Signature (.p7s) Compliant with ICP-Brazil Digital Signature Standard

See more CAdES Examples

Demonstrates how to create a CMS signature w/ policy ID that is compliant with the ICP-Brazil Digital Signature Standard. 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.Cert,
  Chilkat.JsonObject,
  Chilkat.Crypt2;

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

procedure RunDemo;
var
  success: Boolean;
  crypt: TCrypt2;
  cert: TCert;
  attrs: TJsonObject;
  inFile: string;
  outFile: string;

begin
  success := False;

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

  //  ------------------------------------------------------------------------------------------------------
  //  Note: This example creates a CAdES (CMS) signature (.p7s) that contains the PDF.
  //  It is different than signing a PDF.  To sign a PDF where the resulting PDF contains the CMS signature,
  //  see this example:  Sign PDF for ICP-Brasil
  //  ------------------------------------------------------------------------------------------------------

  crypt := TCrypt2.Create;

  cert := TCert.Create;
  success := cert.LoadPfxFile('mySigningCert.pfx','pfxPassword');
  if (success <> True) then
    begin
      WriteLn(cert.LastErrorText);
      Exit;
    end;

  crypt.SetSigningCert(cert);

  //  See https://www.gov.br/iti/pt-br/assuntos/repositorio/artefatos-de-assinatura-digital

  //  Create JSON to indicate which signing attributes to include.
  attrs := TJsonObject.Create;
  attrs.UpdateBool('contentType',True);
  attrs.UpdateBool('signingTime',True);
  attrs.UpdateBool('messageDigest',True);
  attrs.UpdateBool('signingCertificateV2',True);

  attrs.UpdateString('policyId.hashAlg','SHA256');

  //  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 --> 2.16.76.1.7.1.5.1
  //  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 --> 2.16.76.1.7.1.1.1
  //  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 --> 2.16.76.1.7.1.4.1
  //  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 --> 2.16.76.1.7.1.2.1
  //  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 --> 2.16.76.1.7.1.3.1
  //  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

  //  Set the policy OID and the profile name
  attrs.UpdateString('policyId.id','2.16.76.1.7.1.1.2.3');
  attrs.UpdateString('policyId.profile','PA_AD_RB_v2_3');

  crypt.SigningAttributes := attrs.Emit();

  //  The input file can be any type of file.
  inFile := 'toBeSigned.pdf';
  outFile := 'signed.pdf.p7s';

  success := crypt.CreateP7M(inFile,outFile);
  if (success = False) then
    begin
      WriteLn(crypt.LastErrorText);
      Exit;
    end;

  WriteLn('Success.');


  crypt.Free;
  cert.Free;
  attrs.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.