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(PureBasic) UBL XAdES Enveloped Signature

Demonstrates how to create a UBL XAdES enveloped signature.

Chilkat PureBasic Module Download

Chilkat PureBasic Module

IncludeFile "CkCert.pb"
IncludeFile "CkXml.pb"
IncludeFile "CkXmlDSigGen.pb"
IncludeFile "CkXmlDSig.pb"
IncludeFile "CkStringBuilder.pb"

Procedure ChilkatExample()

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

    success.i = 1

    ; 
    ; The following code creates the XML document to be signed.
    ; (It is also possible to simply load the XML into the Chilkat XML object by calling the LoadXml method.)

    ; A sample (already signed) of this XML is available here:  External link: credit-note-en16931-xades-signed.xml

    ; Also, you may use this online tool to generate code from sample XML: 
    ; Generate Code to Create XML

    xmlToSign.i = CkXml::ckCreate()
    If xmlToSign.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    CkXml::setCkTag(xmlToSign, "CreditNote")
    CkXml::ckAddAttribute(xmlToSign,"xmlns","urn:oasis:names:specification:ubl:schema:xsd:CreditNote-2")
    CkXml::ckAddAttribute(xmlToSign,"xmlns:cac","urn:oasis:names:specification:ubl:schema:xsd:CommonAggregateComponents-2")
    CkXml::ckAddAttribute(xmlToSign,"xmlns:cbc","urn:oasis:names:specification:ubl:schema:xsd:CommonBasicComponents-2")
    CkXml::ckAddAttribute(xmlToSign,"xmlns:ext","urn:oasis:names:specification:ubl:schema:xsd:CommonExtensionComponents-2")
    CkXml::ckUpdateAttrAt(xmlToSign,"ext:UBLExtensions|ext:UBLExtension",1,"xmlns:sac","urn:oasis:names:specification:ubl:schema:xsd:SignatureAggregateComponents-2")
    CkXml::ckUpdateAttrAt(xmlToSign,"ext:UBLExtensions|ext:UBLExtension",1,"xmlns:sig","urn:oasis:names:specification:ubl:schema:xsd:CommonSignatureComponents-2")
    CkXml::ckUpdateChildContent(xmlToSign,"ext:UBLExtensions|ext:UBLExtension|ext:ExtensionContent|sig:UBLDocumentSignatures|sac:SignatureInformation","")
    CkXml::ckUpdateChildContent(xmlToSign,"cbc:CustomizationID","urn:cen.eu:en16931:2017")
    CkXml::ckUpdateChildContent(xmlToSign,"cbc:ProfileID","P1")
    CkXml::ckUpdateChildContent(xmlToSign,"cbc:ID","c2ad1540-cf12-4e83-b47c-906aac70242e")
    CkXml::ckUpdateChildContent(xmlToSign,"cbc:IssueDate","2009-12-15")
    CkXml::ckUpdateAttrAt(xmlToSign,"cbc:Note",1,"languageID","en")
    CkXml::ckUpdateChildContent(xmlToSign,"cbc:Note","Ordered in our booth at the convention.")
    CkXml::ckUpdateAttrAt(xmlToSign,"cbc:DocumentCurrencyCode",1,"listAgencyID","6")
    CkXml::ckUpdateAttrAt(xmlToSign,"cbc:DocumentCurrencyCode",1,"listID","ISO 4217 Alpha")
    CkXml::ckUpdateChildContent(xmlToSign,"cbc:DocumentCurrencyCode","HRK")
    CkXml::ckUpdateChildContent(xmlToSign,"cbc:AccountingCost","Project cost code 123")
    CkXml::ckUpdateChildContent(xmlToSign,"cac:InvoicePeriod|cbc:StartDate","2009-11-01")
    CkXml::ckUpdateChildContent(xmlToSign,"cac:InvoicePeriod|cbc:EndDate","2009-11-30")
    CkXml::ckUpdateChildContent(xmlToSign,"cac:OrderReference|cbc:ID","123")
    CkXml::ckUpdateChildContent(xmlToSign,"cac:ContractDocumentReference|cbc:ID","Contract321")
    CkXml::ckUpdateChildContent(xmlToSign,"cac:ContractDocumentReference|cbc:DocumentType","Framework agreement")
    CkXml::ckUpdateChildContent(xmlToSign,"cac:AdditionalDocumentReference|cbc:ID","Doc1")
    CkXml::ckUpdateChildContent(xmlToSign,"cac:AdditionalDocumentReference|cbc:DocumentType","Timesheet")
    CkXml::ckUpdateChildContent(xmlToSign,"cac:AdditionalDocumentReference|cac:Attachment|cac:ExternalReference|cbc:URI","http://www.suppliersite.eu/sheet001.html")
    CkXml::ckUpdateChildContent(xmlToSign,"cac:AdditionalDocumentReference[1]|cbc:ID","Doc2")
    CkXml::ckUpdateChildContent(xmlToSign,"cac:AdditionalDocumentReference[1]|cbc:DocumentType","Drawing")
    CkXml::ckUpdateAttrAt(xmlToSign,"cac:AdditionalDocumentReference[1]|cac:Attachment|cbc:EmbeddedDocumentBinaryObject",1,"mimeCode","application/pdf")
    CkXml::ckUpdateChildContent(xmlToSign,"cac:AdditionalDocumentReference[1]|cac:Attachment|cbc:EmbeddedDocumentBinaryObject","UjBsR09EbGhjZ0dTQUxNQUFBUUNBRU1tQ1p0dU1GUXhEUzhi")
    CkXml::ckUpdateChildContent(xmlToSign,"cac:AccountingSupplierParty|cac:Party|cac:PartyIdentification|cbc:ID","9934:18683136487::HR99:276")
    CkXml::ckUpdateChildContent(xmlToSign,"cac:AccountingSupplierParty|cac:Party|cac:PostalAddress|cbc:StreetName","KATANCICEVA")
    CkXml::ckUpdateChildContent(xmlToSign,"cac:AccountingSupplierParty|cac:Party|cac:PostalAddress|cbc:CityName","ZAGREB")
    CkXml::ckUpdateChildContent(xmlToSign,"cac:AccountingSupplierParty|cac:Party|cac:PostalAddress|cbc:PostalZone","10000")
    CkXml::ckUpdateChildContent(xmlToSign,"cac:AccountingSupplierParty|cac:Party|cac:PostalAddress|cac:Country|cbc:IdentificationCode","HR")
    CkXml::ckUpdateChildContent(xmlToSign,"cac:AccountingSupplierParty|cac:Party|cac:PartyTaxScheme|cbc:CompanyID","HR18683136487")
    CkXml::ckUpdateChildContent(xmlToSign,"cac:AccountingSupplierParty|cac:Party|cac:PartyTaxScheme|cac:TaxScheme|cbc:ID","FRE")
    CkXml::ckUpdateChildContent(xmlToSign,"cac:AccountingSupplierParty|cac:Party|cac:PartyLegalEntity|cbc:RegistrationName","MINISTARSTVO FINANCIJA")
    CkXml::ckUpdateChildContent(xmlToSign,"cac:AccountingSupplierParty|cac:Party|cac:Contact|cbc:Name","JURAJ MARKOVIC")
    CkXml::ckUpdateChildContent(xmlToSign,"cac:AccountingSupplierParty|cac:Party|cac:Contact|cbc:ElectronicMail","juraj.markovic@fina.hr")
    CkXml::ckUpdateChildContent(xmlToSign,"cac:AccountingCustomerParty|cac:Party|cac:PartyIdentification|cbc:ID","9934:49811265576::HR99:NOVO1")
    CkXml::ckUpdateChildContent(xmlToSign,"cac:AccountingCustomerParty|cac:Party|cac:PostalAddress|cbc:StreetName","GETALDICEVA 4")
    CkXml::ckUpdateChildContent(xmlToSign,"cac:AccountingCustomerParty|cac:Party|cac:PostalAddress|cbc:CityName","ZAGREB")
    CkXml::ckUpdateChildContent(xmlToSign,"cac:AccountingCustomerParty|cac:Party|cac:PostalAddress|cbc:PostalZone","10000")
    CkXml::ckUpdateChildContent(xmlToSign,"cac:AccountingCustomerParty|cac:Party|cac:PostalAddress|cac:Country|cbc:IdentificationCode","HR")
    CkXml::ckUpdateChildContent(xmlToSign,"cac:AccountingCustomerParty|cac:Party|cac:PartyTaxScheme|cbc:CompanyID","HR49811265576")
    CkXml::ckUpdateChildContent(xmlToSign,"cac:AccountingCustomerParty|cac:Party|cac:PartyTaxScheme|cac:TaxScheme|cbc:ID","VAT")
    CkXml::ckUpdateChildContent(xmlToSign,"cac:AccountingCustomerParty|cac:Party|cac:PartyLegalEntity|cbc:RegistrationName","NOVO1")
    CkXml::ckUpdateChildContent(xmlToSign,"cac:Delivery|cac:DeliveryLocation|cac:Address|cac:Country|cbc:IdentificationCode","HR")
    CkXml::ckUpdateChildContent(xmlToSign,"cac:PaymentMeans|cbc:PaymentMeansCode","30")
    CkXml::ckUpdateChildContent(xmlToSign,"cac:PaymentMeans|cbc:InstructionNote","Neki opis placanja")
    CkXml::ckUpdateChildContent(xmlToSign,"cac:PaymentMeans|cbc:PaymentID","HR00 12456")
    CkXml::ckUpdateChildContent(xmlToSign,"cac:PaymentMeans|cac:PayeeFinancialAccount|cbc:ID","HR1210010051863000160")
    CkXml::ckUpdateChildContent(xmlToSign,"cac:PaymentTerms|cbc:Note","Neki uvjeti placanja")
    CkXml::ckUpdateAttrAt(xmlToSign,"cac:TaxTotal|cbc:TaxAmount",1,"currencyID","HRK")
    CkXml::ckUpdateChildContent(xmlToSign,"cac:TaxTotal|cbc:TaxAmount","25.00")
    CkXml::ckUpdateAttrAt(xmlToSign,"cac:TaxTotal|cac:TaxSubtotal|cbc:TaxableAmount",1,"currencyID","HRK")
    CkXml::ckUpdateChildContent(xmlToSign,"cac:TaxTotal|cac:TaxSubtotal|cbc:TaxableAmount","100.00")
    CkXml::ckUpdateAttrAt(xmlToSign,"cac:TaxTotal|cac:TaxSubtotal|cbc:TaxAmount",1,"currencyID","HRK")
    CkXml::ckUpdateChildContent(xmlToSign,"cac:TaxTotal|cac:TaxSubtotal|cbc:TaxAmount","25.00")
    CkXml::ckUpdateChildContent(xmlToSign,"cac:TaxTotal|cac:TaxSubtotal|cac:TaxCategory|cbc:ID","S")
    CkXml::ckUpdateChildContent(xmlToSign,"cac:TaxTotal|cac:TaxSubtotal|cac:TaxCategory|cbc:Percent","25")
    CkXml::ckUpdateChildContent(xmlToSign,"cac:TaxTotal|cac:TaxSubtotal|cac:TaxCategory|cac:TaxScheme|cbc:ID","VAT")
    CkXml::ckUpdateAttrAt(xmlToSign,"cac:LegalMonetaryTotal|cbc:LineExtensionAmount",1,"currencyID","HRK")
    CkXml::ckUpdateChildContent(xmlToSign,"cac:LegalMonetaryTotal|cbc:LineExtensionAmount","100.00")
    CkXml::ckUpdateAttrAt(xmlToSign,"cac:LegalMonetaryTotal|cbc:TaxExclusiveAmount",1,"currencyID","HRK")
    CkXml::ckUpdateChildContent(xmlToSign,"cac:LegalMonetaryTotal|cbc:TaxExclusiveAmount","100.00")
    CkXml::ckUpdateAttrAt(xmlToSign,"cac:LegalMonetaryTotal|cbc:TaxInclusiveAmount",1,"currencyID","HRK")
    CkXml::ckUpdateChildContent(xmlToSign,"cac:LegalMonetaryTotal|cbc:TaxInclusiveAmount","125.00")
    CkXml::ckUpdateAttrAt(xmlToSign,"cac:LegalMonetaryTotal|cbc:PayableAmount",1,"currencyID","HRK")
    CkXml::ckUpdateChildContent(xmlToSign,"cac:LegalMonetaryTotal|cbc:PayableAmount","125.00")
    CkXml::ckUpdateChildContent(xmlToSign,"cac:CreditNoteLine|cbc:ID","1")
    CkXml::ckUpdateAttrAt(xmlToSign,"cac:CreditNoteLine|cbc:CreditedQuantity",1,"unitCode","H87")
    CkXml::ckUpdateChildContent(xmlToSign,"cac:CreditNoteLine|cbc:CreditedQuantity","1.000")
    CkXml::ckUpdateAttrAt(xmlToSign,"cac:CreditNoteLine|cbc:LineExtensionAmount",1,"currencyID","HRK")
    CkXml::ckUpdateChildContent(xmlToSign,"cac:CreditNoteLine|cbc:LineExtensionAmount","100.00")
    CkXml::ckUpdateChildContent(xmlToSign,"cac:CreditNoteLine|cac:Item|cbc:Description","Neki detaljniji opis proizvoda ide ovdje")
    CkXml::ckUpdateChildContent(xmlToSign,"cac:CreditNoteLine|cac:Item|cbc:Name","Neki proizvod")
    CkXml::ckUpdateChildContent(xmlToSign,"cac:CreditNoteLine|cac:Item|cac:OriginCountry|cbc:IdentificationCode","HR")
    CkXml::ckUpdateChildContent(xmlToSign,"cac:CreditNoteLine|cac:Item|cac:ClassifiedTaxCategory|cbc:ID","S")
    CkXml::ckUpdateChildContent(xmlToSign,"cac:CreditNoteLine|cac:Item|cac:ClassifiedTaxCategory|cbc:Percent","25")
    CkXml::ckUpdateChildContent(xmlToSign,"cac:CreditNoteLine|cac:Item|cac:ClassifiedTaxCategory|cac:TaxScheme|cbc:ID","VAT")
    CkXml::ckUpdateChildContent(xmlToSign,"cac:CreditNoteLine|cac:Item|cac:AdditionalItemProperty|cbc:Name","Boja")
    CkXml::ckUpdateChildContent(xmlToSign,"cac:CreditNoteLine|cac:Item|cac:AdditionalItemProperty|cbc:Value","Plava")
    CkXml::ckUpdateChildContent(xmlToSign,"cac:CreditNoteLine|cac:Item|cac:AdditionalItemProperty[1]|cbc:Name","Masa")
    CkXml::ckUpdateChildContent(xmlToSign,"cac:CreditNoteLine|cac:Item|cac:AdditionalItemProperty[1]|cbc:Value","1,2 Kg")
    CkXml::ckUpdateAttrAt(xmlToSign,"cac:CreditNoteLine|cac:Price|cbc:PriceAmount",1,"currencyID","HRK")
    CkXml::ckUpdateChildContent(xmlToSign,"cac:CreditNoteLine|cac:Price|cbc:PriceAmount","100.000000")
    CkXml::ckUpdateAttrAt(xmlToSign,"cac:CreditNoteLine|cac:Price|cbc:BaseQuantity",1,"unitCode","H87")
    CkXml::ckUpdateChildContent(xmlToSign,"cac:CreditNoteLine|cac:Price|cbc:BaseQuantity","1.000")

    ; Use this online tool to generate XAdES code from a sample signed XML: 
    ; Generate Code to Creaet XAdES from Sample XAdES

    ; The following code was generated by the online tool.

    gen.i = CkXmlDSigGen::ckCreate()
    If gen.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    CkXmlDSigGen::setCkSigLocation(gen, "CreditNote|ext:UBLExtensions|ext:UBLExtension|ext:ExtensionContent|sig:UBLDocumentSignatures|sac:SignatureInformation")
    CkXmlDSigGen::setCkSigLocationMod(gen, 0)
    CkXmlDSigGen::setCkSigId(gen, "Signature-7f4c4719515a4a0a8ce4d1b983a2ec69")
    CkXmlDSigGen::setCkSigNamespacePrefix(gen, "")
    CkXmlDSigGen::setCkSigNamespaceUri(gen, "http://www.w3.org/2000/09/xmldsig#")
    CkXmlDSigGen::setCkSignedInfoCanonAlg(gen, "C14N")
    CkXmlDSigGen::setCkSignedInfoDigestMethod(gen, "sha256")

    ; Create an Object to be added to the Signature.
    object1.i = CkXml::ckCreate()
    If object1.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    CkXml::setCkTag(object1, "xades:QualifyingProperties")
    CkXml::ckAddAttribute(object1,"xmlns:ds","http://www.w3.org/2000/09/xmldsig#")
    CkXml::ckAddAttribute(object1,"xmlns:xades","http://uri.etsi.org/01903/v1.3.2#")
    CkXml::ckAddAttribute(object1,"Target","#Signature-7f4c4719515a4a0a8ce4d1b983a2ec69")
    CkXml::ckUpdateAttrAt(object1,"xades:SignedProperties",1,"Id","SignedProperties-6573207f4ad64b49b0310f7a9e2dfadc")
    CkXml::ckUpdateChildContent(object1,"xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningTime","TO BE GENERATED BY CHILKAT")
    ; Note: It may be that http://www.w3.org/2001/04/xmlenc#sha256 is needed in the following line instead of http://www.w3.org/2000/09/xmldsig#sha1
    CkXml::ckUpdateAttrAt(object1,"xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert|xades:CertDigest|ds:DigestMethod",1,"Algorithm","http://www.w3.org/2000/09/xmldsig#sha1")
    CkXml::ckUpdateChildContent(object1,"xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert|xades:CertDigest|ds:DigestValue","TO BE GENERATED BY CHILKAT")
    CkXml::ckUpdateChildContent(object1,"xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert|xades:IssuerSerial|ds:X509IssuerName","TO BE GENERATED BY CHILKAT")
    CkXml::ckUpdateChildContent(object1,"xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert|xades:IssuerSerial|ds:X509SerialNumber","TO BE GENERATED BY CHILKAT")
    CkXml::ckUpdateAttrAt(object1,"xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat",1,"ObjectReference","")
    CkXml::ckUpdateChildContent(object1,"xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat|xades:Description","document")
    CkXml::ckUpdateChildContent(object1,"xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat|xades:MimeType","application/xml")
    CkXml::ckUpdateChildContent(object1,"xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat|xades:Encoding","UTF-8")

    CkXmlDSigGen::ckAddObject(gen,"",CkXml::ckGetXml(object1),"","")

    ; -------- Reference 1 --------
    CkXmlDSigGen::ckAddSameDocRef(gen,"","sha256","","","")

    ; -------- Reference 2 --------
    CkXmlDSigGen::ckAddObjectRef(gen,"SignedProperties-6573207f4ad64b49b0310f7a9e2dfadc","sha256","","","http://uri.etsi.org/01903#SignedProperties")

    ; Provide a certificate + private key. (PFX password is test123)
    cert.i = CkCert::ckCreate()
    If cert.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    success = CkCert::ckLoadPfxFile(cert,"qa_data/pfx/cert_test123.pfx","test123")
    If success <> 1
        Debug CkCert::ckLastErrorText(cert)
        CkXml::ckDispose(xmlToSign)
        CkXmlDSigGen::ckDispose(gen)
        CkXml::ckDispose(object1)
        CkCert::ckDispose(cert)
        ProcedureReturn
    EndIf

    CkXmlDSigGen::ckSetX509Cert(gen,cert,1)

    CkXmlDSigGen::setCkKeyInfoType(gen, "X509Data+KeyValue")
    CkXmlDSigGen::setCkX509Type(gen, "IssuerSerial,SubjectName,SKI,Certificate")

    ; Load XML to be signed...
    sbXml.i = CkStringBuilder::ckCreate()
    If sbXml.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    CkXml::ckGetXmlSb(xmlToSign,sbXml)

    ; Adding the "UBLDocumentSignatures" behavior causes the following Transform to be used for the 
    ; first Reference:   
    ;   <Transform Algorithm="http://www.w3.org/TR/1999/REC-xpath-19991116"><XPath>count(ancestor-or-self::sig:UBLDocumentSignatures | here()/ancestor::sig:UBLDocumentSignatures[1]) &gt; count(ancestor-or-self::sig:UBLDocumentSignatures)</XPath></Transform>
    CkXmlDSigGen::setCkBehaviors(gen, "IndentedSignature,UBLDocumentSignatures")

    ; Sign the XML...
    success = CkXmlDSigGen::ckCreateXmlDSigSb(gen,sbXml)
    If success <> 1
        Debug CkXmlDSigGen::ckLastErrorText(gen)
        CkXml::ckDispose(xmlToSign)
        CkXmlDSigGen::ckDispose(gen)
        CkXml::ckDispose(object1)
        CkCert::ckDispose(cert)
        CkStringBuilder::ckDispose(sbXml)
        ProcedureReturn
    EndIf

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

    ; Save the signed XML to a file.
    success = CkStringBuilder::ckWriteFile(sbXml,"qa_output/signedXml.xml","utf-8",0)

    Debug CkStringBuilder::ckGetAsString(sbXml)

    ; ----------------------------------------
    ; Verify the signature we just produced...
    verifier.i = CkXmlDSig::ckCreate()
    If verifier.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    success = CkXmlDSig::ckLoadSignatureSb(verifier,sbXml)
    If success <> 1
        Debug CkXmlDSig::ckLastErrorText(verifier)
        CkXml::ckDispose(xmlToSign)
        CkXmlDSigGen::ckDispose(gen)
        CkXml::ckDispose(object1)
        CkCert::ckDispose(cert)
        CkStringBuilder::ckDispose(sbXml)
        CkXmlDSig::ckDispose(verifier)
        ProcedureReturn
    EndIf

    ; We should have just one signature..
    numSigs.i = CkXmlDSig::ckNumSignatures(verifier)
    verifyIdx.i = 0
    While verifyIdx < numSigs
        CkXmlDSig::setCkSelector(verifier, verifyIdx)
        verified.i = CkXmlDSig::ckVerifySignature(verifier,1)
        If verified <> 1
            Debug CkXmlDSig::ckLastErrorText(verifier)
            CkXml::ckDispose(xmlToSign)
            CkXmlDSigGen::ckDispose(gen)
            CkXml::ckDispose(object1)
            CkCert::ckDispose(cert)
            CkStringBuilder::ckDispose(sbXml)
            CkXmlDSig::ckDispose(verifier)
            ProcedureReturn
        EndIf

        verifyIdx = verifyIdx + 1
    Wend

    Debug "The signature was successfully verified."


    CkXml::ckDispose(xmlToSign)
    CkXmlDSigGen::ckDispose(gen)
    CkXml::ckDispose(object1)
    CkCert::ckDispose(cert)
    CkStringBuilder::ckDispose(sbXml)
    CkXmlDSig::ckDispose(verifier)


    ProcedureReturn
EndProcedure
 

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