(C#) TicketBAI Sign XML Example 1

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First example to demonstrate how to sign XML for TicketBAI.

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

bool success = true;

// Create the XML to be signed...
Chilkat.Xml xmlToSign = new Chilkat.Xml();
xmlToSign.Tag = "T:TicketBai";
xmlToSign.AddAttribute("xmlns:T","urn:ticketbai:emision");
xmlToSign.UpdateChildContent("Cabecera|IDVersionTBAI","1.2");
xmlToSign.UpdateChildContent("Sujetos|Emisor|NIF","79732487C");
xmlToSign.UpdateChildContent("Sujetos|Emisor|ApellidosNombreRazonSocial","ARRIOLA LEJARDI ANE");
xmlToSign.UpdateChildContent("Sujetos|Destinatarios|IDDestinatario|NIF","B00000034");
xmlToSign.UpdateChildContent("Sujetos|Destinatarios|IDDestinatario|ApellidosNombreRazonSocial","CONSULTORIA GALDETU");
xmlToSign.UpdateChildContent("Factura|CabeceraFactura|SerieFactura","A2022");
xmlToSign.UpdateChildContent("Factura|CabeceraFactura|NumFactura","0399");
xmlToSign.UpdateChildContent("Factura|CabeceraFactura|FechaExpedicionFactura","06-05-2022");
xmlToSign.UpdateChildContent("Factura|CabeceraFactura|HoraExpedicionFactura","10:30:28");
xmlToSign.UpdateChildContent("Factura|DatosFactura|DescripcionFactura","Venta Fotocopistera");
xmlToSign.UpdateChildContent("Factura|DatosFactura|ImporteTotalFactura","31.46");
xmlToSign.UpdateChildContent("Factura|DatosFactura|Claves|IDClave|ClaveRegimenIvaOpTrascendencia","01");
xmlToSign.UpdateChildContent("Factura|TipoDesglose|DesgloseFactura|Sujeta|NoExenta|DetalleNoExenta|TipoNoExenta","S1");
xmlToSign.UpdateChildContent("Factura|TipoDesglose|DesgloseFactura|Sujeta|NoExenta|DetalleNoExenta|DesgloseIVA|DetalleIVA|BaseImponible","26.00");
xmlToSign.UpdateChildContent("Factura|TipoDesglose|DesgloseFactura|Sujeta|NoExenta|DetalleNoExenta|DesgloseIVA|DetalleIVA|TipoImpositivo","21.00");
xmlToSign.UpdateChildContent("Factura|TipoDesglose|DesgloseFactura|Sujeta|NoExenta|DetalleNoExenta|DesgloseIVA|DetalleIVA|CuotaImpuesto","5.46");
xmlToSign.UpdateChildContent("HuellaTBAI|EncadenamientoFacturaAnterior|SerieFacturaAnterior","A2022");
xmlToSign.UpdateChildContent("HuellaTBAI|EncadenamientoFacturaAnterior|NumFacturaAnterior","0398");
xmlToSign.UpdateChildContent("HuellaTBAI|EncadenamientoFacturaAnterior|FechaExpedicionFacturaAnterior","05-05-2022");
xmlToSign.UpdateChildContent("HuellaTBAI|EncadenamientoFacturaAnterior|SignatureValueFirmaFacturaAnterior","KwXaQec65SKpVP7EU9o4nUXOx7SAftIToFsxH+2j2tXPXhpBUnS26dhdSpiMl2DlTuqRsFdZfWyYazaGHgSRQHZZAnFtpbi4BeMk");
xmlToSign.UpdateChildContent("HuellaTBAI|Software|LicenciaTBAI","TBAIPRUEBA");
xmlToSign.UpdateChildContent("HuellaTBAI|Software|EntidadDesarrolladora|NIF","A48119820");
xmlToSign.UpdateChildContent("HuellaTBAI|Software|Nombre","DFBTBAI");
xmlToSign.UpdateChildContent("HuellaTBAI|Software|Version","1.04.00");
xmlToSign.UpdateChildContent("HuellaTBAI|NumSerieDispositivo","GP4FC5J");

Chilkat.XmlDSigGen gen = new Chilkat.XmlDSigGen();

gen.SigLocation = "T:TicketBai";
gen.SigLocationMod = 0;
gen.SigId = "Signature-63c35f38-2b5f-4600-b3da-3ddee86d62b3-Signature";
gen.SigNamespacePrefix = "ds";
gen.SigNamespaceUri = "http://www.w3.org/2000/09/xmldsig#";
gen.SigValueId = "Signature-63c35f38-2b5f-4600-b3da-3ddee86d62b3-SignatureValue";
gen.SignedInfoCanonAlg = "C14N";
gen.SignedInfoDigestMethod = "sha256";

// Set the KeyInfoId before adding references..
gen.KeyInfoId = "Signature-63c35f38-2b5f-4600-b3da-3ddee86d62b3-KeyInfo";

// Create an Object to be added to the Signature.
Chilkat.Xml object1 = new Chilkat.Xml();
object1.Tag = "xades:QualifyingProperties";
object1.AddAttribute("xmlns:xades","http://uri.etsi.org/01903/v1.3.2#");
object1.AddAttribute("Id","Signature-63c35f38-2b5f-4600-b3da-3ddee86d62b3-QualifyingProperties");
object1.AddAttribute("Target","#Signature-63c35f38-2b5f-4600-b3da-3ddee86d62b3-Signature");
object1.AddAttribute("xmlns:ds","http://www.w3.org/2000/09/xmldsig#");
object1.UpdateAttrAt("xades:SignedProperties",true,"Id","Signature-63c35f38-2b5f-4600-b3da-3ddee86d62b3-SignedProperties");
object1.UpdateChildContent("xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningTime","TO BE GENERATED BY CHILKAT");
object1.UpdateAttrAt("xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert|xades:CertDigest|ds:DigestMethod",true,"Algorithm","http://www.w3.org/2001/04/xmlenc#sha512");
object1.UpdateChildContent("xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert|xades:CertDigest|ds:DigestValue","TO BE GENERATED BY CHILKAT");
object1.UpdateChildContent("xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert|xades:IssuerSerial|ds:X509IssuerName","TO BE GENERATED BY CHILKAT");
object1.UpdateChildContent("xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert|xades:IssuerSerial|ds:X509SerialNumber","TO BE GENERATED BY CHILKAT");
object1.UpdateChildContent("xades:SignedProperties|xades:SignedSignatureProperties|xades:SignaturePolicyIdentifier|xades:SignaturePolicyId|xades:SigPolicyId|xades:Identifier","https://www.batuz.eus/fitxategiak/batuz/ticketbai/sinadura_elektronikoaren_zehaztapenak_especificaciones_de_la_firma_electronica_v1_0.pdf");
object1.UpdateChildContent("xades:SignedProperties|xades:SignedSignatureProperties|xades:SignaturePolicyIdentifier|xades:SignaturePolicyId|xades:SigPolicyId|xades:Description","");
object1.UpdateAttrAt("xades:SignedProperties|xades:SignedSignatureProperties|xades:SignaturePolicyIdentifier|xades:SignaturePolicyId|xades:SigPolicyHash|ds:DigestMethod",true,"Algorithm","http://www.w3.org/2001/04/xmlenc#sha256");
object1.UpdateChildContent("xades:SignedProperties|xades:SignedSignatureProperties|xades:SignaturePolicyIdentifier|xades:SignaturePolicyId|xades:SigPolicyHash|ds:DigestValue","Quzn98x3PMbSHwbUzaj5f5KOpiH0u8bvmwbbbNkO9Es=");
object1.UpdateChildContent("xades:SignedProperties|xades:SignedSignatureProperties|xades:SignaturePolicyIdentifier|xades:SignaturePolicyId|xades:SigPolicyQualifiers|xades:SigPolicyQualifier|xades:SPURI","https://www.batuz.eus/fitxategiak/batuz/ticketbai/sinadura_elektronikoaren_zehaztapenak_especificaciones_de_la_firma_electronica_v1_0.pdf");
object1.UpdateAttrAt("xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat",true,"ObjectReference","#Reference-7e6f3481-4acc-47de-90fd-67878ad15e8e");
object1.UpdateChildContent("xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat|xades:Description","");
object1.UpdateAttrAt("xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat|xades:ObjectIdentifier|xades:Identifier",true,"Qualifier","OIDAsURN");
object1.UpdateChildContent("xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat|xades:ObjectIdentifier|xades:Identifier","urn:oid:1.2.840.10003.5.109.10");
object1.UpdateChildContent("xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat|xades:ObjectIdentifier|xades:Description","");
object1.UpdateChildContent("xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat|xades:MimeType","text/xml");
object1.UpdateChildContent("xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat|xades:Encoding","");

gen.AddObject("",object1.GetXml(),"","");

// -------- Reference 1 --------
gen.AddSameDocRef("","sha512","C14N","","http://www.w3.org/2000/09/xmldsig#Object");
gen.SetRefIdAttr("","Reference-7e6f3481-4acc-47de-90fd-67878ad15e8e");

// -------- Reference 2 --------
gen.AddObjectRef("Signature-63c35f38-2b5f-4600-b3da-3ddee86d62b3-SignedProperties","sha512","","","http://uri.etsi.org/01903#SignedProperties");

// -------- Reference 3 --------
gen.AddSameDocRef("Signature-63c35f38-2b5f-4600-b3da-3ddee86d62b3-KeyInfo","sha512","","","");

// Provide a certificate + private key. (PFX password is test123)
Chilkat.Cert cert = new Chilkat.Cert();
success = cert.LoadPfxFile("qa_data/pfx/cert_test123.pfx","test123");
if (success != true) {
    Debug.WriteLine(cert.LastErrorText);
    return;
}

gen.SetX509Cert(cert,true);

gen.KeyInfoType = "X509Data+KeyValue";
gen.X509Type = "Certificate";

// Load XML to be signed...
Chilkat.StringBuilder sbXml = new Chilkat.StringBuilder();
xmlToSign.GetXmlSb(sbXml);

gen.Behaviors = "TransformSignatureXPath";

// Sign the XML...
success = gen.CreateXmlDSigSb(sbXml);
if (success != true) {
    Debug.WriteLine(gen.LastErrorText);
    return;
}

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

// Save the signed XML to a file.
success = sbXml.WriteFile("qa_output/signedXml_1.xml","utf-8",false);

Debug.WriteLine(sbXml.GetAsString());

// ----------------------------------------
// Verify the signatures we just produced...
Chilkat.XmlDSig verifier = new Chilkat.XmlDSig();
success = verifier.LoadSignatureSb(sbXml);
if (success != true) {
    Debug.WriteLine(verifier.LastErrorText);
    return;
}

int numSigs = verifier.NumSignatures;
int verifyIdx = 0;
while (verifyIdx < numSigs) {
    verifier.Selector = verifyIdx;
    bool verified = verifier.VerifySignature(true);
    if (verified != true) {
        Debug.WriteLine(verifier.LastErrorText);
        return;
    }

    verifyIdx = verifyIdx + 1;
}

Debug.WriteLine("All signatures were successfully verified.");