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(Visual Basic 6.0) Sign XML for Zakat, Tax and Customs Authority (ZATCA)See more ZATCA ExamplesDemonstrates how to sign XML for Zakat, Tax and Customs Authority (ZATCA).
' This example requires the Chilkat API to have been previously unlocked. ' See Global Unlock Sample for sample code. Dim success As Long success = 1 ' Load XML to be signed... Dim sbXml As New ChilkatStringBuilder success = sbXml.LoadFile("qa_data/xml_dsig_valid_samples/UBL_Saudi_ZATCA_Zakat_Tax_and_Customs_Authority_toBeSigned.xml","utf-8") If (success = 0) Then Debug.Print "Failed to load XML file to be signed." Exit Sub End If ' 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> Dim gen As New ChilkatXmlDSigGen gen.SigLocation = "Invoice|ext:UBLExtensions|ext:UBLExtension|ext:ExtensionContent|sig:UBLDocumentSignatures|sac:SignatureInformation" gen.SigLocationMod = 0 gen.SigId = "signature" gen.SigNamespacePrefix = "ds" gen.SigNamespaceUri = "http://www.w3.org/2000/09/xmldsig#" gen.SignedInfoCanonAlg = "C14N_11" gen.SignedInfoDigestMethod = "sha256" ' Create an Object to be added to the Signature. Dim object1 As New ChilkatXml object1.Tag = "xades:QualifyingProperties" success = object1.AddAttribute("xmlns:xades","http://uri.etsi.org/01903/v1.3.2#") success = object1.AddAttribute("Target","signature") success = object1.UpdateAttrAt("xades:SignedProperties",1,"Id","xadesSignedProperties") object1.UpdateChildContent "xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningTime","TO BE GENERATED BY CHILKAT" success = object1.UpdateAttrAt("xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert|xades:CertDigest|ds:DigestMethod",1,"Algorithm","http://www.w3.org/2001/04/xmlenc#sha256") object1.UpdateChildContent "xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert|xades:CertDigest|ds:DigestValue","TO BE GENERATED BY CHILKAT" object1.UpdateChildContent "xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert|xades:IssuerSerial|ds:X509IssuerName","TO BE GENERATED BY CHILKAT" object1.UpdateChildContent "xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert|xades:IssuerSerial|ds:X509SerialNumber","TO BE GENERATED BY CHILKAT" success = gen.AddObject("",object1.GetXml(),"","") ' -------- Reference 1 -------- Dim xml1 As New ChilkatXml xml1.Tag = "ds:Transforms" success = xml1.UpdateAttrAt("ds:Transform",1,"Algorithm","http://www.w3.org/TR/1999/REC-xpath-19991116") xml1.UpdateChildContent "ds:Transform|ds:XPath","not(//ancestor-or-self::ext:UBLExtensions)" success = xml1.UpdateAttrAt("ds:Transform[1]",1,"Algorithm","http://www.w3.org/TR/1999/REC-xpath-19991116") xml1.UpdateChildContent "ds:Transform[1]|ds:XPath","not(//ancestor-or-self::cac:Signature)" success = xml1.UpdateAttrAt("ds:Transform[2]",1,"Algorithm","http://www.w3.org/TR/1999/REC-xpath-19991116") xml1.UpdateChildContent "ds:Transform[2]|ds:XPath","not(//ancestor-or-self::cac:AdditionalDocumentReference[cbc:ID='QR'])" success = xml1.UpdateAttrAt("ds:Transform[3]",1,"Algorithm","http://www.w3.org/2006/12/xml-c14n11") success = gen.AddSameDocRef2("","sha256",xml1,"") success = gen.SetRefIdAttr("","invoiceSignedData") ' -------- Reference 2 -------- success = gen.AddObjectRef("xadesSignedProperties","sha256","","","http://www.w3.org/2000/09/xmldsig#SignatureProperties") ' Provide a certificate + private key. (PFX password is test123) Dim certFromPfx As New ChilkatCert success = certFromPfx.LoadPfxFile("qa_data/pfx/cert_test123.pfx","test123") If (success <> 1) Then Debug.Print certFromPfx.LastErrorText Exit Sub End If ' Alternatively, if your certificate and private key are in separate PEM files, do this: Dim cert As New ChilkatCert success = cert.LoadFromFile("qa_data/zatca/cert.pem") If (success <> 1) Then Debug.Print cert.LastErrorText Exit Sub End If Debug.Print cert.SubjectCN ' Load the private key. Dim privKey As New PrivateKey success = privKey.LoadPemFile("qa_data/zatca/ec-secp256k1-priv-key.pem") If (success <> 1) Then Debug.Print privKey.LastErrorText Exit Sub End If Debug.Print "Key Type: " & privKey.KeyType ' Associate the private key with the certificate. success = cert.SetPrivateKey(privKey) If (success <> 1) Then Debug.Print cert.LastErrorText Exit Sub End If ' 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. success = gen.SetX509Cert(cert,1) If (success <> 1) Then Debug.Print gen.LastErrorText Exit Sub End If gen.KeyInfoType = "X509Data" gen.X509Type = "Certificate" ' ---------------- This is important ----------------------------------------- ' Starting in Chilkat v9.5.0.92, add the "ZATCA" behavior to produce the format required by ZATCA. gen.Behaviors = "IndentedSignature,TransformSignatureXPath,ZATCA" ' ---------------------------------------------------------------------------- ' Sign the XML... success = gen.CreateXmlDSigSb(sbXml) If (success <> 1) Then Debug.Print gen.LastErrorText Exit Sub End If ' ----------------------------------------------- ' Save the signed XML to a file. success = sbXml.WriteFile("qa_output/signedXml.xml","utf-8",0) Debug.Print sbXml.GetAsString() ' ---------------------------------------- ' Verify the signatures we just produced... Dim verifier As New ChilkatXmlDSig success = verifier.LoadSignatureSb(sbXml) If (success <> 1) Then Debug.Print verifier.LastErrorText Exit Sub End If ' ---------------- This is important ----------------------------------------- ' Starting in Chilkat v9.5.0.92, specify "ZATCA" in uncommon options ' to validate signed XML according to ZATCA needs. ' ---------------------------------------------------------------------------- verifier.UncommonOptions = "ZATCA" Dim numSigs As Long numSigs = verifier.NumSignatures Dim verifyIdx As Long verifyIdx = 0 Do While verifyIdx < numSigs verifier.Selector = verifyIdx Dim verified As Long verified = verifier.VerifySignature(1) If (verified <> 1) Then Debug.Print verifier.LastErrorText Exit Sub End If verifyIdx = verifyIdx + 1 Loop Debug.Print "All signatures were successfully verified." |
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