(Chilkat2-Python) TicketBAI Sign XML Example 1

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First example to demonstrate how to sign XML for TicketBAI.

Chilkat2 Python Downloads install with pip pip3 install chilkat2 or download... Python Module for Windows, Linux, Alpine Linux, MacOS, Solaris

import sys
import chilkat2

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

success = True

# Create the XML to be signed...
xmlToSign = chilkat2.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 Fotocopister�a")
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")

gen = chilkat2.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.
object1 = chilkat2.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:SigningCertificateV2|xades:Cert|xades:CertDigest|ds:DigestMethod",True,"Algorithm","http://www.w3.org/2001/04/xmlenc#sha512")
object1.UpdateChildContent("xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificateV2|xades:Cert|xades:CertDigest|ds:DigestValue","TO BE GENERATED BY CHILKAT")
object1.UpdateChildContent("xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificateV2|xades:Cert|xades:IssuerSerialV2","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)
cert = chilkat2.Cert()
success = cert.LoadPfxFile("qa_data/pfx/cert_test123.pfx","test123")
if (success != True):
    print(cert.LastErrorText)
    sys.exit()

gen.SetX509Cert(cert,True)

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

# Load XML to be signed...
sbXml = chilkat2.StringBuilder()
xmlToSign.GetXmlSb(sbXml)

gen.Behaviors = "TransformSignatureXPath"

# Sign the XML...
success = gen.CreateXmlDSigSb(sbXml)
if (success != True):
    print(gen.LastErrorText)
    sys.exit()

# -----------------------------------------------

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

print(sbXml.GetAsString())

# ----------------------------------------
# Verify the signatures we just produced...
verifier = chilkat2.XmlDSig()
success = verifier.LoadSignatureSb(sbXml)
if (success != True):
    print(verifier.LastErrorText)
    sys.exit()

numSigs = verifier.NumSignatures
verifyIdx = 0
while verifyIdx < numSigs :
    verifier.Selector = verifyIdx
    verified = verifier.VerifySignature(True)
    if (verified != True):
        print(verifier.LastErrorText)
        sys.exit()

    verifyIdx = verifyIdx + 1

print("All signatures were successfully verified.")