(Delphi DLL) Verify Factura Electronica Chile SII (iso-8859-1)

Demonstrates how to verify SII XML stored as iso-8859-1 having just a single signature.

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, XmlDSig, StringBuilder;

...

procedure TForm1.Button1Click(Sender: TObject);
var
sbXml: HCkStringBuilder;
success: Boolean;
dsig: HCkXmlDSig;
bVerifyReferenceDigests: Boolean;
bVerified: Boolean;

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

// The signed XML to be verified in this example contains the following:

// <?xml version="1.0" encoding="ISO-8859-1"?>
// <DTE version="1.0" xmlns="http://www.sii.cl/SiiDte">
// <Documento ID="F13T34">
// ...
// </Documento>
// <Signature xmlns="http://www.w3.org/2000/09/xmldsig#">
// ....
// </Signature>
// </DTE>

// Load the signed XML into sbXml -- telling Chilkat to interpret the bytes as iso-8859-1 
sbXml := CkStringBuilder_Create();
success := CkStringBuilder_LoadFile(sbXml,'qa_data/xml_dsig/sii_cl/signed1.xml','iso-8859-1');
if (success = False) then
  begin
    Memo1.Lines.Add('Failed to load input file.');
    Exit;
  end;

dsig := CkXmlDSig_Create();

success := CkXmlDSig_LoadSignatureSb(dsig,sbXml);
if (success <> True) then
  begin
    Memo1.Lines.Add(CkXmlDSig__lastErrorText(dsig));
    Exit;
  end;

bVerifyReferenceDigests := True;
bVerified := CkXmlDSig_VerifySignature(dsig,bVerifyReferenceDigests);
if (bVerified = False) then
  begin
    Memo1.Lines.Add(CkXmlDSig__lastErrorText(dsig));
    Exit;
  end;

Memo1.Lines.Add('Signature verified = ' + IntToStr(Ord(bVerified)));

CkStringBuilder_Dispose(sbXml);
CkXmlDSig_Dispose(dsig);

end;