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(Objective-C) Sign XML for Zakat, Tax and Customs Authority (ZATCA)See more ZATCA ExamplesDemonstrates how to sign XML for Zakat, Tax and Customs Authority (ZATCA).
#import <CkoStringBuilder.h> #import <CkoXmlDSigGen.h> #import <CkoXml.h> #import <CkoCert.h> #import <CkoPrivateKey.h> #import <CkoXmlDSig.h> // This example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. BOOL success = YES; // Load XML to be signed... CkoStringBuilder *sbXml = [[CkoStringBuilder alloc] init]; success = [sbXml LoadFile: @"qa_data/xml_dsig_valid_samples/UBL_Saudi_ZATCA_Zakat_Tax_and_Customs_Authority_toBeSigned.xml" charset: @"utf-8"]; if (success == NO) { NSLog(@"%@",@"Failed to load XML file to be signed."); return; } // 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> CkoXmlDSigGen *gen = [[CkoXmlDSigGen alloc] init]; gen.SigLocation = @"Invoice|ext:UBLExtensions|ext:UBLExtension|ext:ExtensionContent|sig:UBLDocumentSignatures|sac:SignatureInformation"; gen.SigLocationMod = [NSNumber numberWithInt: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. CkoXml *object1 = [[CkoXml alloc] init]; object1.Tag = @"xades:QualifyingProperties"; [object1 AddAttribute: @"xmlns:xades" value: @"http://uri.etsi.org/01903/v1.3.2#"]; [object1 AddAttribute: @"Target" value: @"signature"]; [object1 UpdateAttrAt: @"xades:SignedProperties" autoCreate: YES attrName: @"Id" attrValue: @"xadesSignedProperties"]; [object1 UpdateChildContent: @"xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningTime" value: @"TO BE GENERATED BY CHILKAT"]; [object1 UpdateAttrAt: @"xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert|xades:CertDigest|ds:DigestMethod" autoCreate: YES attrName: @"Algorithm" attrValue: @"http://www.w3.org/2001/04/xmlenc#sha256"]; [object1 UpdateChildContent: @"xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert|xades:CertDigest|ds:DigestValue" value: @"TO BE GENERATED BY CHILKAT"]; [object1 UpdateChildContent: @"xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert|xades:IssuerSerial|ds:X509IssuerName" value: @"TO BE GENERATED BY CHILKAT"]; [object1 UpdateChildContent: @"xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert|xades:IssuerSerial|ds:X509SerialNumber" value: @"TO BE GENERATED BY CHILKAT"]; [gen AddObject: @"" content: [object1 GetXml] mimeType: @"" encoding: @""]; // -------- Reference 1 -------- CkoXml *xml1 = [[CkoXml alloc] init]; xml1.Tag = @"ds:Transforms"; [xml1 UpdateAttrAt: @"ds:Transform" autoCreate: YES attrName: @"Algorithm" attrValue: @"http://www.w3.org/TR/1999/REC-xpath-19991116"]; [xml1 UpdateChildContent: @"ds:Transform|ds:XPath" value: @"not(//ancestor-or-self::ext:UBLExtensions)"]; [xml1 UpdateAttrAt: @"ds:Transform[1]" autoCreate: YES attrName: @"Algorithm" attrValue: @"http://www.w3.org/TR/1999/REC-xpath-19991116"]; [xml1 UpdateChildContent: @"ds:Transform[1]|ds:XPath" value: @"not(//ancestor-or-self::cac:Signature)"]; [xml1 UpdateAttrAt: @"ds:Transform[2]" autoCreate: YES attrName: @"Algorithm" attrValue: @"http://www.w3.org/TR/1999/REC-xpath-19991116"]; [xml1 UpdateChildContent: @"ds:Transform[2]|ds:XPath" value: @"not(//ancestor-or-self::cac:AdditionalDocumentReference[cbc:ID='QR'])"]; [xml1 UpdateAttrAt: @"ds:Transform[3]" autoCreate: YES attrName: @"Algorithm" attrValue: @"http://www.w3.org/2006/12/xml-c14n11"]; [gen AddSameDocRef2: @"" digestMethod: @"sha256" transforms: xml1 refType: @""]; [gen SetRefIdAttr: @"" value: @"invoiceSignedData"]; // -------- Reference 2 -------- [gen AddObjectRef: @"xadesSignedProperties" digestMethod: @"sha256" canonMethod: @"" prefixList: @"" refType: @"http://www.w3.org/2000/09/xmldsig#SignatureProperties"]; // Provide a certificate + private key. (PFX password is test123) CkoCert *certFromPfx = [[CkoCert alloc] init]; success = [certFromPfx LoadPfxFile: @"qa_data/pfx/cert_test123.pfx" password: @"test123"]; if (success != YES) { NSLog(@"%@",certFromPfx.LastErrorText); return; } // Alternatively, if your certificate and private key are in separate PEM files, do this: CkoCert *cert = [[CkoCert alloc] init]; success = [cert LoadFromFile: @"qa_data/zatca/cert.pem"]; if (success != YES) { NSLog(@"%@",cert.LastErrorText); return; } NSLog(@"%@",cert.SubjectCN); // Load the private key. CkoPrivateKey *privKey = [[CkoPrivateKey alloc] init]; success = [privKey LoadPemFile: @"qa_data/zatca/ec-secp256k1-priv-key.pem"]; if (success != YES) { NSLog(@"%@",privKey.LastErrorText); return; } NSLog(@"%@%@",@"Key Type: ",privKey.KeyType); // Associate the private key with the certificate. success = [cert SetPrivateKey: privKey]; if (success != YES) { NSLog(@"%@",cert.LastErrorText); return; } // 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 usePrivateKey: YES]; if (success != YES) { NSLog(@"%@",gen.LastErrorText); return; } 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 != YES) { NSLog(@"%@",gen.LastErrorText); return; } // ----------------------------------------------- // Save the signed XML to a file. success = [sbXml WriteFile: @"qa_output/signedXml.xml" charset: @"utf-8" emitBom: NO]; NSLog(@"%@",[sbXml GetAsString]); // ---------------------------------------- // Verify the signatures we just produced... CkoXmlDSig *verifier = [[CkoXmlDSig alloc] init]; success = [verifier LoadSignatureSb: sbXml]; if (success != YES) { NSLog(@"%@",verifier.LastErrorText); return; } // ---------------- 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"; int numSigs = [verifier.NumSignatures intValue]; int verifyIdx = 0; while (verifyIdx < numSigs) { verifier.Selector = [NSNumber numberWithInt: verifyIdx]; BOOL verified = [verifier VerifySignature: YES]; if (verified != YES) { NSLog(@"%@",verifier.LastErrorText); return; } verifyIdx = verifyIdx + 1; } NSLog(@"%@",@"All signatures were successfully verified."); |
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