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

Demonstrates how to create a .p7s signature that contains a data file, which in this case is a PDF. The .p7s will be compliant with the ICP-Brazil Digital Signature Standard.

Important: This example requires Chilkat v9.5.0.92 or later.

Chilkat for Delphi Downloads Chilkat non-ActiveX DLL for Delphi Chilkat ActiveX DLL for Delphi * The examples here use the non-ActiveX DLL.

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, BinData, Cert, JsonObject, Crypt2;

...

procedure TForm1.Button1Click(Sender: TObject);
var
crypt: HCkCrypt2;
inFile: PWideChar;
bd: HCkBinData;
success: Boolean;
cert: HCkCert;
jsonSigningAttrs: HCkJsonObject;

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

crypt := CkCrypt2_Create();

// Any type of file can be signed.  It doesn't have to be a PDF.
inFile := 'qa_data/pdf/helloWorld.pdf';

bd := CkBinData_Create();
success := CkBinData_LoadFile(bd,inFile);
if (success = False) then
  begin
    Memo1.Lines.Add('Failed to load ' + inFile);
    Exit;
  end;

// Get the certificate we'll be using to sign.
cert := CkCert_Create();

success := CkCert_LoadPfxFile(cert,'qa_data/pfx/cert_test123.pfx','test123');
if (success = False) then
  begin
    Memo1.Lines.Add(CkCert__lastErrorText(cert));
    Exit;
  end;

success := CkCrypt2_SetSigningCert(crypt,cert);
if (success = False) then
  begin
    Memo1.Lines.Add(CkCrypt2__lastErrorText(crypt));
    Exit;
  end;

// Set properties for signing...
CkCrypt2_putHashAlgorithm(crypt,'sha256');

jsonSigningAttrs := CkJsonObject_Create();
CkJsonObject_UpdateInt(jsonSigningAttrs,'contentType',1);
CkJsonObject_UpdateInt(jsonSigningAttrs,'signingTime',1);
CkJsonObject_UpdateInt(jsonSigningAttrs,'messageDigest',1);
CkJsonObject_UpdateInt(jsonSigningAttrs,'signingCertificateV2',1);

// 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
CkJsonObject_UpdateString(jsonSigningAttrs,'policyId.id','2.16.76.1.7.1.1.2.3');
CkJsonObject_UpdateString(jsonSigningAttrs,'policyId.profile','PA_AD_RB_v2_3');

CkCrypt2_putSigningAttributes(crypt,CkJsonObject__emit(jsonSigningAttrs));

// Sign. 
success := CkCrypt2_OpaqueSignBd(crypt,bd);
if (success = False) then
  begin
    Memo1.Lines.Add(CkCrypt2__lastErrorText(crypt));
    Exit;
  end;

// Save to a .p7s
success := CkBinData_WriteFile(bd,'qa_output/helloWorld.pdf.p7s');

Memo1.Lines.Add('Success');

CkCrypt2_Dispose(crypt);
CkBinData_Dispose(bd);
CkCert_Dispose(cert);
CkJsonObject_Dispose(jsonSigningAttrs);

end;