(Delphi ActiveX) Create CAdES-BES .p7m for FatturaPA XML Invoice

Demonstrates how to create a CAdES BES invoice.xml.p7m for the Italian FatturaPA exchange system.

Note: This example requires Chilkat v9.5.0.75.

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
crypt: TChilkatCrypt2;
pfxPath: WideString;
pfxPassword: WideString;
cert: TChilkatCert;
success: Integer;
jsonSignedAttrs: TChilkatJsonObject;
inFile: WideString;
sigFile: WideString;

begin
// Note: Requires Chilkat v9.5.0.75 or greater.

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

crypt := TChilkatCrypt2.Create(Self);

// Use a digital certificate and private key from a PFX file (.pfx or .p12).
pfxPath := 'qa_data/pfx/cert_test123.pfx';
pfxPassword := 'test123';

cert := TChilkatCert.Create(Self);
success := cert.LoadPfxFile(pfxPath,pfxPassword);
if (success <> 1) then
  begin
    Memo1.Lines.Add(cert.LastErrorText);
    Exit;
  end;

// Provide the signing cert (with associated private key).
success := crypt.SetSigningCert(cert.ControlInterface);
if (success <> 1) then
  begin
    Memo1.Lines.Add(crypt.LastErrorText);
    Exit;
  end;

// Indicate that SHA-256 should be used.
crypt.HashAlgorithm := 'sha256';

// Specify the signed attributes to be included.
// (This is what makes it CAdES-BES compliant.)
jsonSignedAttrs := TChilkatJsonObject.Create(Self);
jsonSignedAttrs.UpdateInt('contentType',1);
jsonSignedAttrs.UpdateInt('signingTime',1);
jsonSignedAttrs.UpdateInt('messageDigest',1);
jsonSignedAttrs.UpdateInt('signingCertificateV2',1);
crypt.SigningAttributes := jsonSignedAttrs.Emit();

inFile := 'qa_data/xml/IT01234567890_11002.xml';
sigFile := 'qa_output/IT01234567890_11002.xml.p7m';

// Create the CAdES-BES signature, which contains the original data.
success := crypt.CreateP7M(inFile,sigFile);
if (success = 0) then
  begin
    Memo1.Lines.Add(crypt.LastErrorText);
    Exit;
  end;

Memo1.Lines.Add('Success.');
end;