(PHP Extension) Paraguay E-Invoicing Signed XML (SIFEN)

See more XML Digital Signatures Examples

Demonstrates how to sign XML for e-invoicing -- SISTEMA INTEGRADO DE FACTURACIÓN ELECTRÓNICA NACIONAL (SIFEN). This is for signing XML files that need to be submitted to a government agency (Country Paraguay, SIFEN / EKUATIA, Sistema Nacional de Facturacion Electrónica).

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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");

$success = true;

// Create the XML to be signed...

// Use this online tool to generate code from sample XML: 
// Generate Code to Create XML

$xmlToSign = new CkXml();
$xmlToSign->put_Tag('rDE');
$xmlToSign->AddAttribute('xmlns','http://ekuatia.set.gov.py/sifen/xsd');
$xmlToSign->AddAttribute('xmlns:xsi','http://www.w3.org/2001/XMLSchema-instance');
$xmlToSign->AddAttribute('xsi:schemaLocation','http://ekuatia.set.gov.py/sifen/xsd siRecepDE_v150.xsd');
$xmlToSign->UpdateChildContent('dVerFor','150');
$xmlToSign->UpdateAttrAt('DE',true,'Id','01800228774059001001501012022091519999999990');
$xmlToSign->UpdateChildContent('DE|dDVId','0');
$xmlToSign->UpdateChildContent('DE|dFecFirma','2022-09-15T10:23:05');
$xmlToSign->UpdateChildContent('DE|dSisFact','1');
$xmlToSign->UpdateChildContent('DE|gOpeDE|iTipEmi','1');
$xmlToSign->UpdateChildContent('DE|gOpeDE|dDesTipEmi','Normal');
$xmlToSign->UpdateChildContent('DE|gOpeDE|dCodSeg','999999999');
$xmlToSign->UpdateChildContent('DE|gOpeDE|dInfoEmi','GENERADA DE PEDIDO 131043202');
$xmlToSign->UpdateChildContent('DE|gTimb|iTiDE','1');
$xmlToSign->UpdateChildContent('DE|gTimb|dDesTiDE','Factura electrnica');
$xmlToSign->UpdateChildContent('DE|gTimb|dNumTim','18889014');
$xmlToSign->UpdateChildContent('DE|gTimb|dEst','059');
$xmlToSign->UpdateChildContent('DE|gTimb|dPunExp','001');
$xmlToSign->UpdateChildContent('DE|gTimb|dNumDoc','0015010');
$xmlToSign->UpdateChildContent('DE|gTimb|dFeIniT','2022-05-25');
$xmlToSign->UpdateChildContent('DE|gDatGralOpe|dFeEmiDE','2022-09-15T10:22:57');
$xmlToSign->UpdateChildContent('DE|gDatGralOpe|gOpeCom|iTipTra','1');
$xmlToSign->UpdateChildContent('DE|gDatGralOpe|gOpeCom|dDesTipTra','Venta de mercadera');
$xmlToSign->UpdateChildContent('DE|gDatGralOpe|gOpeCom|iTImp','1');
$xmlToSign->UpdateChildContent('DE|gDatGralOpe|gOpeCom|dDesTImp','IVA');
$xmlToSign->UpdateChildContent('DE|gDatGralOpe|gOpeCom|cMoneOpe','PYG');
$xmlToSign->UpdateChildContent('DE|gDatGralOpe|gOpeCom|dDesMoneOpe','Guarani');
$xmlToSign->UpdateChildContent('DE|gDatGralOpe|gEmis|dRucEm','80022877');
$xmlToSign->UpdateChildContent('DE|gDatGralOpe|gEmis|dDVEmi','4');
$xmlToSign->UpdateChildContent('DE|gDatGralOpe|gEmis|iTipCont','1');
$xmlToSign->UpdateChildContent('DE|gDatGralOpe|gEmis|cTipReg','1');
$xmlToSign->UpdateChildContent('DE|gDatGralOpe|gEmis|dNomEmi','ABCDEF SA');
$xmlToSign->UpdateChildContent('DE|gDatGralOpe|gEmis|dNomFanEmi','ABCDEF SA');
$xmlToSign->UpdateChildContent('DE|gDatGralOpe|gEmis|dDirEmi','Jos Abcde Xyz N 666 e/Abxyz123');
$xmlToSign->UpdateChildContent('DE|gDatGralOpe|gEmis|dNumCas','0');
$xmlToSign->UpdateChildContent('DE|gDatGralOpe|gEmis|dCompDir1','N/A');
$xmlToSign->UpdateChildContent('DE|gDatGralOpe|gEmis|dCompDir2','N/A');
$xmlToSign->UpdateChildContent('DE|gDatGralOpe|gEmis|cDepEmi','12');
$xmlToSign->UpdateChildContent('DE|gDatGralOpe|gEmis|dDesDepEmi','CENTRAL');
$xmlToSign->UpdateChildContent('DE|gDatGralOpe|gEmis|cDisEmi','153');
$xmlToSign->UpdateChildContent('DE|gDatGralOpe|gEmis|dDesDisEmi','CAPIATA');
$xmlToSign->UpdateChildContent('DE|gDatGralOpe|gEmis|cCiuEmi','1234');
$xmlToSign->UpdateChildContent('DE|gDatGralOpe|gEmis|dDesCiuEmi','CAPIATA');
$xmlToSign->UpdateChildContent('DE|gDatGralOpe|gEmis|dTelEmi','(022) 1111 000');
$xmlToSign->UpdateChildContent('DE|gDatGralOpe|gEmis|dEmailE','somebody@example.com.py');
$xmlToSign->UpdateChildContent('DE|gDatGralOpe|gEmis|dDenSuc','PUNTO 99');
$xmlToSign->UpdateChildContent('DE|gDatGralOpe|gEmis|gActEco|cActEco','47721');
$xmlToSign->UpdateChildContent('DE|gDatGralOpe|gEmis|gActEco|dDesActEco','COMERCIO AL POR MENOR DE PRODUCTOS');
$xmlToSign->UpdateChildContent('DE|gDatGralOpe|gDatRec|iNatRec','1');
$xmlToSign->UpdateChildContent('DE|gDatGralOpe|gDatRec|iTiOpe','2');
$xmlToSign->UpdateChildContent('DE|gDatGralOpe|gDatRec|cPaisRec','PRY');
$xmlToSign->UpdateChildContent('DE|gDatGralOpe|gDatRec|dDesPaisRe','Paraguay');
$xmlToSign->UpdateChildContent('DE|gDatGralOpe|gDatRec|iTiContRec','2');
$xmlToSign->UpdateChildContent('DE|gDatGralOpe|gDatRec|dRucRec','80082971');
$xmlToSign->UpdateChildContent('DE|gDatGralOpe|gDatRec|dDVRec','9');
$xmlToSign->UpdateChildContent('DE|gDatGralOpe|gDatRec|dNomRec','XXXXXXX');
$xmlToSign->UpdateChildContent('DE|gDatGralOpe|gDatRec|dNomFanRec','XXXXXXX');
$xmlToSign->UpdateChildContent('DE|gDatGralOpe|gDatRec|dNumCasRec','0');
$xmlToSign->UpdateChildContent('DE|gDatGralOpe|gDatRec|dCodCliente','9999999');
$xmlToSign->UpdateChildContent('DE|gDtipDE|gCamFE|iIndPres','1');
$xmlToSign->UpdateChildContent('DE|gDtipDE|gCamFE|dDesIndPres','Operacin presencial');
$xmlToSign->UpdateChildContent('DE|gDtipDE|gCamCond|iCondOpe','1');
$xmlToSign->UpdateChildContent('DE|gDtipDE|gCamCond|dDCondOpe','Contado');
$xmlToSign->UpdateChildContent('DE|gDtipDE|gCamCond|gPaConEIni|iTiPago','1');
$xmlToSign->UpdateChildContent('DE|gDtipDE|gCamCond|gPaConEIni|dDesTiPag','Efectivo');
$xmlToSign->UpdateChildContent('DE|gDtipDE|gCamCond|gPaConEIni|dMonTiPag','100000.0000');
$xmlToSign->UpdateChildContent('DE|gDtipDE|gCamCond|gPaConEIni|cMoneTiPag','PYG');
$xmlToSign->UpdateChildContent('DE|gDtipDE|gCamCond|gPaConEIni|dDMoneTiPag','Guarani');
$xmlToSign->UpdateChildContent('DE|gDtipDE|gCamCond|gPaConEIni[1]|iTiPago','1');
$xmlToSign->UpdateChildContent('DE|gDtipDE|gCamCond|gPaConEIni[1]|dDesTiPag','Efectivo');
$xmlToSign->UpdateChildContent('DE|gDtipDE|gCamCond|gPaConEIni[1]|dMonTiPag','73600.0000');
$xmlToSign->UpdateChildContent('DE|gDtipDE|gCamCond|gPaConEIni[1]|cMoneTiPag','PYG');
$xmlToSign->UpdateChildContent('DE|gDtipDE|gCamCond|gPaConEIni[1]|dDMoneTiPag','Guarani');
$xmlToSign->UpdateChildContent('DE|gDtipDE|gCamItem|dCodInt','818181');
$xmlToSign->UpdateChildContent('DE|gDtipDE|gCamItem|dDesProSer','Widget Abc Xyz');
$xmlToSign->UpdateChildContent('DE|gDtipDE|gCamItem|cUniMed','77');
$xmlToSign->UpdateChildContent('DE|gDtipDE|gCamItem|dDesUniMed','UNI');
$xmlToSign->UpdateChildContent('DE|gDtipDE|gCamItem|dCantProSer','2.0000');
$xmlToSign->UpdateChildContent('DE|gDtipDE|gCamItem|gValorItem|dPUniProSer','16500.0000');
$xmlToSign->UpdateChildContent('DE|gDtipDE|gCamItem|gValorItem|dTotBruOpeItem','33000.0000');
$xmlToSign->UpdateChildContent('DE|gDtipDE|gCamItem|gValorItem|gValorRestaItem|dDescItem','3300.0000');
$xmlToSign->UpdateChildContent('DE|gDtipDE|gCamItem|gValorItem|gValorRestaItem|dPorcDesIt','20.0000');
$xmlToSign->UpdateChildContent('DE|gDtipDE|gCamItem|gValorItem|gValorRestaItem|dTotOpeItem','26400.0000');
$xmlToSign->UpdateChildContent('DE|gDtipDE|gCamItem|gCamIVA|iAfecIVA','1');
$xmlToSign->UpdateChildContent('DE|gDtipDE|gCamItem|gCamIVA|dDesAfecIVA','Gravado IVA');
$xmlToSign->UpdateChildContent('DE|gDtipDE|gCamItem|gCamIVA|dPropIVA','100');
$xmlToSign->UpdateChildContent('DE|gDtipDE|gCamItem|gCamIVA|dTasaIVA','5');
$xmlToSign->UpdateChildContent('DE|gDtipDE|gCamItem|gCamIVA|dBasGravIVA','25142.8571');
$xmlToSign->UpdateChildContent('DE|gDtipDE|gCamItem|gCamIVA|dLiqIVAItem','1257.1429');
$xmlToSign->UpdateChildContent('DE|gTotSub|dSubExe','0.0000');
$xmlToSign->UpdateChildContent('DE|gTotSub|dSub5','26400.0000');
$xmlToSign->UpdateChildContent('DE|gTotSub|dSub10','0.0000');
$xmlToSign->UpdateChildContent('DE|gTotSub|dTotOpe','26400.0000');
$xmlToSign->UpdateChildContent('DE|gTotSub|dTotDesc','6600.0000');
$xmlToSign->UpdateChildContent('DE|gTotSub|dTotDescGlotem','0.0000');
$xmlToSign->UpdateChildContent('DE|gTotSub|dTotAntItem','0.0000');
$xmlToSign->UpdateChildContent('DE|gTotSub|dTotAnt','0.0000');
$xmlToSign->UpdateChildContent('DE|gTotSub|dPorcDescTotal','0.0000');
$xmlToSign->UpdateChildContent('DE|gTotSub|dDescTotal','6600.0000');
$xmlToSign->UpdateChildContent('DE|gTotSub|dAnticipo','0.0000');
$xmlToSign->UpdateChildContent('DE|gTotSub|dRedon','0.0000');
$xmlToSign->UpdateChildContent('DE|gTotSub|dTotGralOpe','26400.0000');
$xmlToSign->UpdateChildContent('DE|gTotSub|dIVA5','1257.1429');
$xmlToSign->UpdateChildContent('DE|gTotSub|dIVA10','0.0000');
$xmlToSign->UpdateChildContent('DE|gTotSub|dTotIVA','1257.1429');
$xmlToSign->UpdateChildContent('DE|gTotSub|dBaseGrav5','25142.8571');
$xmlToSign->UpdateChildContent('DE|gTotSub|dBaseGrav10','0.0000');
$xmlToSign->UpdateChildContent('DE|gTotSub|dTBasGraIVA','25142.8571');

$gen = new CkXmlDSigGen();

$gen->put_SigLocation('rDE');
$gen->put_SigLocationMod(0);
$gen->put_SigNamespacePrefix('');
$gen->put_SigNamespaceUri('http://www.w3.org/2000/09/xmldsig#');
$gen->put_SignedInfoCanonAlg('C14N');
$gen->put_SignedInfoDigestMethod('sha256');

// -------- Reference 1 --------
$xml1 = new CkXml();
$xml1->put_Tag('Transforms');
$xml1->UpdateAttrAt('Transform',true,'Algorithm','http://www.w3.org/2000/09/xmldsig#enveloped-signature');
$xml1->UpdateAttrAt('Transform[1]',true,'Algorithm','http://www.w3.org/2001/10/xml-exc-c14n#');

$gen->AddSameDocRef2('01800228774059001001501012022091516941989060','sha256',$xml1,'');

// 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');
$gen->put_X509Type('Certificate');

// Load XML to be signed...
$sbXml = new CkStringBuilder();
$xmlToSign->GetXmlSb($sbXml);

$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('c:/temp/qa_output/signedXml.xml','utf-8',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";

?>