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(CkPython) 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).

Chilkat Python Downloads

install with pip

pip3 install chilkat

or download... Python Module for Windows, MacOS, Linux, Alpine Linux, Solaris

import sys
import chilkat

success = True

# Create the XML to be signed...

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

xmlToSign = chilkat.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 = chilkat.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 = chilkat.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 = chilkat.CkCert()
success = cert.LoadPfxFile("qa_data/pfx/cert_test123.pfx","test123")
if (success != True):
    print(cert.lastErrorText())
    sys.exit()

gen.SetX509Cert(cert,True)

gen.put_KeyInfoType("X509Data")
gen.put_X509Type("Certificate")

# Load XML to be signed...
sbXml = chilkat.CkStringBuilder()
xmlToSign.GetXmlSb(sbXml)

gen.put_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("c:/temp/qa_output/signedXml.xml","utf-8",False)

print(sbXml.getAsString())

# ----------------------------------------
# Verify the signatures we just produced...
verifier = chilkat.CkXmlDSig()
success = verifier.LoadSignatureSb(sbXml)
if (success != True):
    print(verifier.lastErrorText())
    sys.exit()

numSigs = verifier.get_NumSignatures()
verifyIdx = 0
while verifyIdx < numSigs :
    verifier.put_Selector(verifyIdx)
    verified = verifier.VerifySignature(True)
    if (verified != True):
        print(verifier.lastErrorText())
        sys.exit()

    verifyIdx = verifyIdx + 1

print("All signatures were successfully verified.")
 

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