(Chilkat2-Python) Create sii.cl Factura Electrónica (Chile Servicio de Impuestos Internos)

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

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 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 = chilkat2.XmlDSigGen()

gen.SigLocation = "DTE"
gen.SigLocationMod = 0
gen.SigNamespacePrefix = ""
gen.SigNamespaceUri = "http://www.w3.org/2000/09/xmldsig#"
gen.SignedInfoCanonAlg = "C14N"
gen.SignedInfoDigestMethod = "sha1"

# -------- Reference 1 --------
gen.AddSameDocRef("F13T34","sha1","","","")

# 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()
success = sbXml.LoadFile("qa_data/xml_dsig/sii_cl/xmlToSign.xml","iso-8859-1")
if (success == False):
    print("Failed to load XML file.")
    sys.exit()

gen.Behaviors = "IndentedSignature"

# 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_data/xml_dsig/sii_cl/signed1.xml","iso-8859-1",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.")