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Visual FoxPro

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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LOCAL lnSuccess
LOCAL loXmlToSign
LOCAL loGen
LOCAL loXml1
LOCAL loCert
LOCAL loSbXml
LOCAL loVerifier
LOCAL lnNumSigs
LOCAL lnVerifyIdx
LOCAL lnVerified

lnSuccess = 0

lnSuccess = 1

* Create the XML to be signed...

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

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

loGen = CreateObject('Chilkat.XmlDSigGen')

loGen.SigLocation = "rDE"
loGen.SigLocationMod = 0
loGen.SigNamespacePrefix = ""
loGen.SigNamespaceUri = "http://www.w3.org/2000/09/xmldsig#"
loGen.SignedInfoCanonAlg = "C14N"
loGen.SignedInfoDigestMethod = "sha256"

* -------- Reference 1 --------
loXml1 = CreateObject('Chilkat.Xml')
loXml1.Tag = "Transforms"
loXml1.UpdateAttrAt("Transform",1,"Algorithm","http://www.w3.org/2000/09/xmldsig#enveloped-signature")
loXml1.UpdateAttrAt("Transform[1]",1,"Algorithm","http://www.w3.org/2001/10/xml-exc-c14n#")

loGen.AddSameDocRef2("01800228774059001001501012022091516941989060","sha256",loXml1,"")

* Provide a certificate + private key. (PFX password is test123)
loCert = CreateObject('Chilkat.Cert')
lnSuccess = loCert.LoadPfxFile("qa_data/pfx/cert_test123.pfx","test123")
IF (lnSuccess <> 1) THEN
    ? loCert.LastErrorText
    RELEASE loXmlToSign
    RELEASE loGen
    RELEASE loXml1
    RELEASE loCert
    CANCEL
ENDIF

loGen.SetX509Cert(loCert,1)

loGen.KeyInfoType = "X509Data"
loGen.X509Type = "Certificate"

* Load XML to be signed...
loSbXml = CreateObject('Chilkat.StringBuilder')
loXmlToSign.GetXmlSb(loSbXml)

loGen.Behaviors = "IndentedSignature"

* Sign the XML...
lnSuccess = loGen.CreateXmlDSigSb(loSbXml)
IF (lnSuccess <> 1) THEN
    ? loGen.LastErrorText
    RELEASE loXmlToSign
    RELEASE loGen
    RELEASE loXml1
    RELEASE loCert
    RELEASE loSbXml
    CANCEL
ENDIF

* -----------------------------------------------

* Save the signed XML to a file.
lnSuccess = loSbXml.WriteFile("c:/temp/qa_output/signedXml.xml","utf-8",0)

? loSbXml.GetAsString()

* ----------------------------------------
* Verify the signatures we just produced...
loVerifier = CreateObject('Chilkat.XmlDSig')
lnSuccess = loVerifier.LoadSignatureSb(loSbXml)
IF (lnSuccess <> 1) THEN
    ? loVerifier.LastErrorText
    RELEASE loXmlToSign
    RELEASE loGen
    RELEASE loXml1
    RELEASE loCert
    RELEASE loSbXml
    RELEASE loVerifier
    CANCEL
ENDIF

lnNumSigs = loVerifier.NumSignatures
lnVerifyIdx = 0
DO WHILE lnVerifyIdx < lnNumSigs
    loVerifier.Selector = lnVerifyIdx
    lnVerified = loVerifier.VerifySignature(1)
    IF (lnVerified <> 1) THEN
        ? loVerifier.LastErrorText
        RELEASE loXmlToSign
        RELEASE loGen
        RELEASE loXml1
        RELEASE loCert
        RELEASE loSbXml
        RELEASE loVerifier
        CANCEL
    ENDIF

    lnVerifyIdx = lnVerifyIdx + 1
ENDDO
? "All signatures were successfully verified."

RELEASE loXmlToSign
RELEASE loGen
RELEASE loXml1
RELEASE loCert
RELEASE loSbXml
RELEASE loVerifier