Sample code for 30+ languages & platforms
AutoIt

Sign XML for Zakat, Tax and Customs Authority (ZATCA)

See more ZATCA Examples

Demonstrates how to sign XML for Zakat, Tax and Customs Authority (ZATCA).

Chilkat AutoIt Downloads

AutoIt
Local $bSuccess = False

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

$bSuccess = True

; Load XML to be signed...
$oSbXml = ObjCreate("Chilkat.StringBuilder")
$bSuccess = $oSbXml.LoadFile("qa_data/xml_dsig_valid_samples/UBL_Saudi_ZATCA_Zakat_Tax_and_Customs_Authority_toBeSigned.xml","utf-8")
If ($bSuccess = False) Then
    ConsoleWrite("Failed to load XML file to be signed." & @CRLF)
    Exit
EndIf

; Loads XML containing the following (with data modified from the original sample).

; <?xml version="1.0" encoding="UTF-8"?>
; <Invoice xmlns="urn:oasis:names:specification:ubl:schema:xsd:Invoice-2" xmlns:cac="urn:oasis:names:specification:ubl:schema:xsd:CommonAggregateComponents-2" xmlns:cbc="urn:oasis:names:specification:ubl:schema:xsd:CommonBasicComponents-2" xmlns:ext="urn:oasis:names:specification:ubl:schema:xsd:CommonExtensionComponents-2"><ext:UBLExtensions>
;     <ext:UBLExtension>
;         <ext:ExtensionURI>urn:oasis:names:specification:ubl:dsig:enveloped:xades</ext:ExtensionURI>
;         <ext:ExtensionContent>
;             <sig:UBLDocumentSignatures xmlns:sig="urn:oasis:names:specification:ubl:schema:xsd:CommonSignatureComponents-2" xmlns:sac="urn:oasis:names:specification:ubl:schema:xsd:SignatureAggregateComponents-2" xmlns:sbc="urn:oasis:names:specification:ubl:schema:xsd:SignatureBasicComponents-2">
;                 <sac:SignatureInformation>
;                     <cbc:ID>urn:oasis:names:specification:ubl:signature:1</cbc:ID>
;                     <sbc:ReferencedSignatureID>urn:oasis:names:specification:ubl:signature:Invoice</sbc:ReferencedSignatureID>
;                     
;                 </sac:SignatureInformation>
;             </sig:UBLDocumentSignatures>
;         </ext:ExtensionContent>
;     </ext:UBLExtension>
; </ext:UBLExtensions>
;    
;    <cbc:ProfileID>reporting:1.0</cbc:ProfileID>
;    <cbc:ID>100</cbc:ID>
;    <cbc:UUID>3cf5ee18-ee25-44ea-a444-2c37ba7f28be</cbc:UUID>
;    <cbc:IssueDate>2021-04-25</cbc:IssueDate>
;    <cbc:IssueTime>15:30:00</cbc:IssueTime>
;    <cbc:InvoiceTypeCode name="0100000">388</cbc:InvoiceTypeCode>
;    <cbc:DocumentCurrencyCode>SAR</cbc:DocumentCurrencyCode>
;    <cbc:TaxCurrencyCode>SAR</cbc:TaxCurrencyCode>
;    <cbc:LineCountNumeric>2</cbc:LineCountNumeric>
;    <cac:AdditionalDocumentReference>
;       <cbc:ID>ICV</cbc:ID>
;       <cbc:UUID>46531</cbc:UUID>
;    </cac:AdditionalDocumentReference>
;    <cac:AdditionalDocumentReference>
;       <cbc:ID>PIH</cbc:ID>
;       <cac:Attachment>
;          <cbc:EmbeddedDocumentBinaryObject mimeCode="text/plain">NWZl......NTdlOQ==</cbc:EmbeddedDocumentBinaryObject>
;       </cac:Attachment>
;    </cac:AdditionalDocumentReference>
;    
;   
;    <cac:AdditionalDocumentReference>
;         <cbc:ID>QR</cbc:ID>
;         <cac:Attachment>
;             <cbc:EmbeddedDocumentBinaryObject mimeCode="text/plain">ARlBbC........FAau5g</cbc:EmbeddedDocumentBinaryObject>
;         </cac:Attachment>
; </cac:AdditionalDocumentReference><cac:Signature>
;       <cbc:ID>urn:oasis:names:specification:ubl:signature:Invoice</cbc:ID>
;       <cbc:SignatureMethod>urn:oasis:names:specification:ubl:dsig:enveloped:xades</cbc:SignatureMethod>
; </cac:Signature><cac:AccountingSupplierParty>
;       <cac:Party>
;          <cac:PartyIdentification>
;             <cbc:ID schemeID="MLS">123457890</cbc:ID>
;          </cac:PartyIdentification>
;          <cac:PostalAddress>
;             <cbc:StreetName>King Abdulaziz Road</cbc:StreetName>
;             <cbc:BuildingNumber>9999</cbc:BuildingNumber>
;             <cbc:PlotIdentification>9999</cbc:PlotIdentification>
;             <cbc:CitySubdivisionName>Al Amal</cbc:CitySubdivisionName>
;             <cbc:CityName>Riyadh</cbc:CityName>
;             <cbc:PostalZone>12643</cbc:PostalZone>
;             <cbc:CountrySubentity>Riyadh Region</cbc:CountrySubentity>
;             <cac:Country>
;                <cbc:IdentificationCode>SA</cbc:IdentificationCode>
;             </cac:Country>
;          </cac:PostalAddress>
;          <cac:PartyTaxScheme>
;             <cbc:CompanyID>300099999900003</cbc:CompanyID>
;             <cac:TaxScheme>
;                <cbc:ID>VAT</cbc:ID>
;             </cac:TaxScheme>
;          </cac:PartyTaxScheme>
;          <cac:PartyLegalEntity>
;             <cbc:RegistrationName>Example Co. LTD</cbc:RegistrationName>
;          </cac:PartyLegalEntity>
;       </cac:Party>
;    </cac:AccountingSupplierParty>
;    <cac:AccountingCustomerParty>
;       <cac:Party>
;          <cac:PartyIdentification>
;             <cbc:ID schemeID="SAG">123C12345678</cbc:ID>
;          </cac:PartyIdentification>
;          <cac:PostalAddress>
;             <cbc:StreetName>King Abdullah Road</cbc:StreetName>
;             <cbc:BuildingNumber>9999</cbc:BuildingNumber>
;             <cbc:PlotIdentification>9999</cbc:PlotIdentification>
;             <cbc:CitySubdivisionName>Al Mursalat</cbc:CitySubdivisionName>
;             <cbc:CityName>Riyadh</cbc:CityName>
;             <cbc:PostalZone>11564</cbc:PostalZone>
;             <cbc:CountrySubentity>Riyadh Region</cbc:CountrySubentity>
;             <cac:Country>
;                <cbc:IdentificationCode>SA</cbc:IdentificationCode>
;             </cac:Country>
;          </cac:PostalAddress>
;          <cac:PartyTaxScheme>
;             <cac:TaxScheme>
;                <cbc:ID>VAT</cbc:ID>
;             </cac:TaxScheme>
;          </cac:PartyTaxScheme>
;          <cac:PartyLegalEntity>
;             <cbc:RegistrationName>EXAMPLE MARKETS</cbc:RegistrationName>
;          </cac:PartyLegalEntity>
;       </cac:Party>
;    </cac:AccountingCustomerParty>
;    <cac:Delivery>
;       <cbc:ActualDeliveryDate>2022-04-25</cbc:ActualDeliveryDate>
;    </cac:Delivery>
;    <cac:PaymentMeans>
;       <cbc:PaymentMeansCode>42</cbc:PaymentMeansCode>
;    </cac:PaymentMeans>
;    <cac:TaxTotal>
;       <cbc:TaxAmount currencyID="SAR">135.00</cbc:TaxAmount>
;       <cac:TaxSubtotal>
;          <cbc:TaxableAmount currencyID="SAR">900.00</cbc:TaxableAmount>
;          <cbc:TaxAmount currencyID="SAR">135.00</cbc:TaxAmount>
;          <cac:TaxCategory>
;             <cbc:ID>S</cbc:ID>
;             <cbc:Percent>15</cbc:Percent>
;             <cac:TaxScheme>
;                <cbc:ID>VAT</cbc:ID>
;             </cac:TaxScheme>
;          </cac:TaxCategory>
;       </cac:TaxSubtotal>
;    </cac:TaxTotal>
;    <cac:TaxTotal>
;       <cbc:TaxAmount currencyID="SAR">135.00</cbc:TaxAmount>
;    </cac:TaxTotal>
;    <cac:LegalMonetaryTotal>
;       <cbc:LineExtensionAmount currencyID="SAR">900.00</cbc:LineExtensionAmount>
;       <cbc:TaxExclusiveAmount currencyID="SAR">900.00</cbc:TaxExclusiveAmount>
;       <cbc:TaxInclusiveAmount currencyID="SAR">1035.00</cbc:TaxInclusiveAmount>
;       <cbc:AllowanceTotalAmount currencyID="SAR">0.00</cbc:AllowanceTotalAmount>
;       <cbc:PayableAmount currencyID="SAR">1035.00</cbc:PayableAmount>
;    </cac:LegalMonetaryTotal>
;    <cac:InvoiceLine>
;       <cbc:ID>1</cbc:ID>
;       <cbc:InvoicedQuantity unitCode="PCE">1</cbc:InvoicedQuantity>
;       <cbc:LineExtensionAmount currencyID="SAR">200.00</cbc:LineExtensionAmount>
;       <cac:TaxTotal>
;          <cbc:TaxAmount currencyID="SAR">30.00</cbc:TaxAmount>
;          <cbc:RoundingAmount currencyID="SAR">230.00</cbc:RoundingAmount>
;       </cac:TaxTotal>
;       <cac:Item>
;          <cbc:Name>Item A</cbc:Name>
;          <cac:ClassifiedTaxCategory>
;             <cbc:ID>S</cbc:ID>
;             <cbc:Percent>15</cbc:Percent>
;             <cac:TaxScheme>
;                <cbc:ID>VAT</cbc:ID>
;             </cac:TaxScheme>
;          </cac:ClassifiedTaxCategory>
;       </cac:Item>
;       <cac:Price>
;          <cbc:PriceAmount currencyID="SAR">200.00</cbc:PriceAmount>
;       </cac:Price>
;    </cac:InvoiceLine>
;    <cac:InvoiceLine>
;       <cbc:ID>2</cbc:ID>
;       <cbc:InvoicedQuantity unitCode="PCE">2</cbc:InvoicedQuantity>
;       <cbc:LineExtensionAmount currencyID="SAR">700.00</cbc:LineExtensionAmount>
;       <cac:TaxTotal>
;          <cbc:TaxAmount currencyID="SAR">105.00</cbc:TaxAmount>
;          <cbc:RoundingAmount currencyID="SAR">805.00</cbc:RoundingAmount>
;       </cac:TaxTotal>
;       <cac:Item>
;          <cbc:Name>Item B</cbc:Name>
;          <cac:ClassifiedTaxCategory>
;             <cbc:ID>S</cbc:ID>
;             <cbc:Percent>15</cbc:Percent>
;             <cac:TaxScheme>
;                <cbc:ID>VAT</cbc:ID>
;             </cac:TaxScheme>
;          </cac:ClassifiedTaxCategory>
;       </cac:Item>
;       <cac:Price>
;          <cbc:PriceAmount currencyID="SAR">350.00</cbc:PriceAmount>
;       </cac:Price>
;    </cac:InvoiceLine>
; </Invoice>

$oGen = ObjCreate("Chilkat.XmlDSigGen")

$oGen.SigLocation = "Invoice|ext:UBLExtensions|ext:UBLExtension|ext:ExtensionContent|sig:UBLDocumentSignatures|sac:SignatureInformation"
$oGen.SigLocationMod = 0
$oGen.SigId = "signature"
$oGen.SigNamespacePrefix = "ds"
$oGen.SigNamespaceUri = "http://www.w3.org/2000/09/xmldsig#"
$oGen.SignedInfoCanonAlg = "C14N_11"
$oGen.SignedInfoDigestMethod = "sha256"

; Create an Object to be added to the Signature.
$oObject1 = ObjCreate("Chilkat.Xml")
$oObject1.Tag = "xades:QualifyingProperties"
$oObject1.AddAttribute("xmlns:xades","http://uri.etsi.org/01903/v1.3.2#")
$oObject1.AddAttribute("Target","signature")
$oObject1.UpdateAttrAt("xades:SignedProperties",True,"Id","xadesSignedProperties")
$oObject1.UpdateChildContent "xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningTime","TO BE GENERATED BY CHILKAT"
$oObject1.UpdateAttrAt("xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert|xades:CertDigest|ds:DigestMethod",True,"Algorithm","http://www.w3.org/2001/04/xmlenc#sha256")
$oObject1.UpdateChildContent "xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert|xades:CertDigest|ds:DigestValue","TO BE GENERATED BY CHILKAT"
$oObject1.UpdateChildContent "xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert|xades:IssuerSerial|ds:X509IssuerName","TO BE GENERATED BY CHILKAT"
$oObject1.UpdateChildContent "xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert|xades:IssuerSerial|ds:X509SerialNumber","TO BE GENERATED BY CHILKAT"

$oGen.AddObject("",$oObject1.GetXml(),"","")

; -------- Reference 1 --------
$oXml1 = ObjCreate("Chilkat.Xml")
$oXml1.Tag = "ds:Transforms"
$oXml1.UpdateAttrAt("ds:Transform",True,"Algorithm","http://www.w3.org/TR/1999/REC-xpath-19991116")
$oXml1.UpdateChildContent "ds:Transform|ds:XPath","not(//ancestor-or-self::ext:UBLExtensions)"
$oXml1.UpdateAttrAt("ds:Transform[1]",True,"Algorithm","http://www.w3.org/TR/1999/REC-xpath-19991116")
$oXml1.UpdateChildContent "ds:Transform[1]|ds:XPath","not(//ancestor-or-self::cac:Signature)"
$oXml1.UpdateAttrAt("ds:Transform[2]",True,"Algorithm","http://www.w3.org/TR/1999/REC-xpath-19991116")
$oXml1.UpdateChildContent "ds:Transform[2]|ds:XPath","not(//ancestor-or-self::cac:AdditionalDocumentReference[cbc:ID='QR'])"
$oXml1.UpdateAttrAt("ds:Transform[3]",True,"Algorithm","http://www.w3.org/2006/12/xml-c14n11")

$oGen.AddSameDocRef2("","sha256",$oXml1,"")

$oGen.SetRefIdAttr("","invoiceSignedData")

; -------- Reference 2 --------
$oGen.AddObjectRef("xadesSignedProperties","sha256","","","http://www.w3.org/2000/09/xmldsig#SignatureProperties")

; Provide a certificate + private key. (PFX password is test123)
$oCertFromPfx = ObjCreate("Chilkat.Cert")
$bSuccess = $oCertFromPfx.LoadPfxFile("qa_data/pfx/cert_test123.pfx","test123")
If ($bSuccess <> True) Then
    ConsoleWrite($oCertFromPfx.LastErrorText & @CRLF)
    Exit
EndIf

; Alternatively, if your certificate and private key are in separate PEM files, do this:
$oCert = ObjCreate("Chilkat.Cert")
$bSuccess = $oCert.LoadFromFile("qa_data/zatca/cert.pem")
If ($bSuccess <> True) Then
    ConsoleWrite($oCert.LastErrorText & @CRLF)
    Exit
EndIf

ConsoleWrite($oCert.SubjectCN & @CRLF)

; Load the private key.
$oPrivKey = ObjCreate("Chilkat.PrivateKey")
$bSuccess = $oPrivKey.LoadPemFile("qa_data/zatca/ec-secp256k1-priv-key.pem")
If ($bSuccess <> True) Then
    ConsoleWrite($oPrivKey.LastErrorText & @CRLF)
    Exit
EndIf

ConsoleWrite("Key Type: " & $oPrivKey.KeyType & @CRLF)

; Associate the private key with the certificate.
$bSuccess = $oCert.SetPrivateKey($oPrivKey)
If ($bSuccess <> True) Then
    ConsoleWrite($oCert.LastErrorText & @CRLF)
    Exit
EndIf

; The certificate passed to SetX509Cert must have an associated private key.
; If the cert was loaded from a PFX, then it should automatically has an associated private key.
; If the cert was loaded from PEM, then the private key was explicitly associated as shown above.
$bSuccess = $oGen.SetX509Cert($oCert,True)
If ($bSuccess <> True) Then
    ConsoleWrite($oGen.LastErrorText & @CRLF)
    Exit
EndIf

$oGen.KeyInfoType = "X509Data"
$oGen.X509Type = "Certificate"

; ---------------- This is important -----------------------------------------
; Starting in Chilkat v9.5.0.92, add the "ZATCA" behavior to produce the format required by ZATCA.
$oGen.Behaviors = "IndentedSignature,TransformSignatureXPath,ZATCA"
; ----------------------------------------------------------------------------

; Sign the XML...
$bSuccess = $oGen.CreateXmlDSigSb($oSbXml)
If ($bSuccess <> True) Then
    ConsoleWrite($oGen.LastErrorText & @CRLF)
    Exit
EndIf

; -----------------------------------------------

; Save the signed XML to a file.
$bSuccess = $oSbXml.WriteFile("qa_output/signedXml.xml","utf-8",False)

ConsoleWrite($oSbXml.GetAsString() & @CRLF)

; ----------------------------------------
; Verify the signatures we just produced...
$oVerifier = ObjCreate("Chilkat.XmlDSig")
$bSuccess = $oVerifier.LoadSignatureSb($oSbXml)
If ($bSuccess <> True) Then
    ConsoleWrite($oVerifier.LastErrorText & @CRLF)
    Exit
EndIf

; ---------------- This is important -----------------------------------------
; Starting in Chilkat v9.5.0.92, specify "ZATCA" in uncommon options 
; to validate signed XML according to ZATCA needs.
; ----------------------------------------------------------------------------
$oVerifier.UncommonOptions = "ZATCA"

Local $iNumSigs = $oVerifier.NumSignatures
Local $iVerifyIdx = 0
While $iVerifyIdx < $iNumSigs
    $oVerifier.Selector = $iVerifyIdx
Local $bVerified = $oVerifier.VerifySignature(True)
    If ($bVerified <> True) Then
        ConsoleWrite($oVerifier.LastErrorText & @CRLF)
        Exit
    EndIf

    $iVerifyIdx = $iVerifyIdx + 1
Wend
ConsoleWrite("All signatures were successfully verified." & @CRLF)