(PHP Extension) Create sii.cl Factura Electrónica (Chile Servicio de Impuestos Internos)

Demonstrates how to sign an XML invoice according to Chilean Internal Revenue Service regulations.

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<?php

// The version number (9_5_0) should match version of the Chilkat extension used, omitting the micro-version number.
// For example, if using Chilkat v9.5.0.48, then include as shown here:
include("chilkat_9_5_0.php");

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

// See: Apply 2nd Signature to sii.cl Factura Electr�nica (Chile Servicio de Impuestos Internos)
// for an example showing how to apply a 2nd signature.

// We want to sign XML that looks like the following:

// <?xml version="1.0" encoding="iso-8859-1"?>
// <DTE version="1.0" xmlns="http://www.sii.cl/SiiDte">
//     <Documento ID="F13T34">
//         <Encabezado>
//             <IdDoc>
//                 <TipoDTE>34</TipoDTE>
//                 <Folio>13</Folio>
//                 <FchEmis>2020-07-17</FchEmis>
//                 <FmaPago>1</FmaPago>
//                 <FchVenc>2020-07-17</FchVenc>
//             </IdDoc>
//             <Emisor>
//                 <RUTEmisor>...</RUTEmisor>
//                 <RznSoc>...</RznSoc>
//                 <GiroEmis>...</GiroEmis>
//                 <Acteco>...</Acteco>
//                 <DirOrigen>...</DirOrigen>
//                 <CmnaOrigen>...</CmnaOrigen>
//                 <CiudadOrigen>...</CiudadOrigen>
//             </Emisor>
//             <Receptor>
//                 <RUTRecep>...</RUTRecep>
//                 <RznSocRecep>...</RznSocRecep>
//                 <GiroRecep>...</GiroRecep>
//                 <Contacto/>
//                 <DirRecep>...</DirRecep>
//                 <CmnaRecep>...</CmnaRecep>
//                 <CiudadRecep>...</CiudadRecep>
//             </Receptor>
//             <Totales>
//                 <MntExe>14999</MntExe>
//                 <MntTotal>14999</MntTotal>
//             </Totales>
//         </Encabezado>
//         <Detalle>
//             <NroLinDet>1</NroLinDet>
//             <CdgItem>
//                 <TpoCodigo>INT</TpoCodigo>
//                 <VlrCodigo>1</VlrCodigo>
//             </CdgItem>
//             <NmbItem>Atencin profesional mes de Junio 2020</NmbItem>
//             <QtyItem>1</QtyItem>
//             <UnmdItem>UNI</UnmdItem>
//             <PrcItem>14999</PrcItem>
//             <MontoItem>14999</MontoItem>
//         </Detalle>
//         <TED version="1.0">
//             <DD>
//                 <RE>99972220-K</RE>
//                 <TD>34</TD>
//                 <F>13</F>
//                 <FE>2020-07-17</FE>
//                 <RR>99942999-2</RR>
//                 <RSR>...</RSR>
//                 <MNT>14999</MNT>
//                 <IT1>Atencion profesional mes de Junio 2020</IT1>
//                 <CAF version="1.0">
//                     <DA>
//                         <RE>99972220-K</RE>
//                         <RS>...</RS>
//                         <TD>34</TD>
//                         <RNG>
//                             <D>3</D>
//                             <H>12</H>
//                         </RNG>
//                         <FA>2019-10-10</FA>
//                         <RSAPK>
//                             <M>2zHVYpcVNQRvS2yFuqdrh...TEQZx/m0t9HVTgWKZvlc6LSQ==</M>
//                             <E>Aw==</E>
//                         </RSAPK>
//                         <IDK>300</IDK>
//                     </DA>
//                     <FRMA algoritmo="SHA1withRSA">LaVkjISGu...sBtsQL1jR9lw==</FRMA>
//                 </CAF>
//                 <TSTED>2020-07-17T13:19:10</TSTED>
//             </DD>
//             <FRMT algoritmo="SHA1withRSA">LxZr6zmXRZIfTz7...IXS6sp4vfz2fIsA==</FRMT>
//         </TED>
//         <TmstFirma>2020-07-17T13:19:10</TmstFirma>
//     </Documento>
// </DTE>

$success = true;

$gen = new CkXmlDSigGen();

$gen->put_SigLocation('DTE');
$gen->put_SigLocationMod(0);
$gen->put_SigNamespacePrefix('');
$gen->put_SigNamespaceUri('http://www.w3.org/2000/09/xmldsig#');
$gen->put_SignedInfoCanonAlg('C14N');
$gen->put_SignedInfoDigestMethod('sha1');

// -------- Reference 1 --------
$gen->AddSameDocRef('F13T34','sha1','','','');

// Provide a certificate + private key. (PFX password is test123)
$cert = new CkCert();
$success = $cert->LoadPfxFile('qa_data/pfx/cert_test123.pfx','test123');
if ($success != true) {
    print $cert->lastErrorText() . "\n";
    exit;
}

$gen->SetX509Cert($cert,true);

$gen->put_KeyInfoType('X509Data+KeyValue');
$gen->put_X509Type('Certificate');

// Load XML to be signed...
$sbXml = new CkStringBuilder();
$success = $sbXml->LoadFile('qa_data/xml_dsig/sii_cl/xmlToSign.xml','iso-8859-1');
if ($success == false) {
    print 'Failed to load XML file.' . "\n";
    exit;
}

$gen->put_Behaviors('IndentedSignature');

// Sign the XML...
$success = $gen->CreateXmlDSigSb($sbXml);
if ($success != true) {
    print $gen->lastErrorText() . "\n";
    exit;
}

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

// Save the signed XML to a file.
$success = $sbXml->WriteFile('qa_data/xml_dsig/sii_cl/signed1.xml','iso-8859-1',false);

print $sbXml->getAsString() . "\n";

// ----------------------------------------
// Verify the signatures we just produced...
$verifier = new CkXmlDSig();
$success = $verifier->LoadSignatureSb($sbXml);
if ($success != true) {
    print $verifier->lastErrorText() . "\n";
    exit;
}

$numSigs = $verifier->get_NumSignatures();
$verifyIdx = 0;
while ($verifyIdx < $numSigs) {
    $verifier->put_Selector($verifyIdx);
    $verified = $verifier->VerifySignature(true);
    if ($verified != true) {
        print $verifier->lastErrorText() . "\n";
        exit;
    }

    $verifyIdx = $verifyIdx + 1;
}

print 'All signatures were successfully verified.' . "\n";

?>