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(Delphi DLL) UBL XAdES Enveloped Signature

Demonstrates how to create a UBL XAdES enveloped signature.

Chilkat for Delphi Downloads

Chilkat non-ActiveX DLL for Delphi

Chilkat ActiveX DLL for Delphi

* The examples here use the non-ActiveX DLL.

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, StringBuilder, XmlDSigGen, Xml, XmlDSig, Cert;

...

procedure TForm1.Button1Click(Sender: TObject);
var
success: Boolean;
xmlToSign: HCkXml;
gen: HCkXmlDSigGen;
object1: HCkXml;
cert: HCkCert;
sbXml: HCkStringBuilder;
verifier: HCkXmlDSig;
numSigs: Integer;
verifyIdx: Integer;
verified: Boolean;

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

success := True;

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

CkXmlDSigGen_putSigLocation(gen,'CreditNote|ext:UBLExtensions|ext:UBLExtension|ext:ExtensionContent|sig:UBLDocumentSignatures|sac:SignatureInformation');
CkXmlDSigGen_putSigLocationMod(gen,0);
CkXmlDSigGen_putSigId(gen,'Signature-7f4c4719515a4a0a8ce4d1b983a2ec69');
CkXmlDSigGen_putSigNamespacePrefix(gen,'');
CkXmlDSigGen_putSigNamespaceUri(gen,'http://www.w3.org/2000/09/xmldsig#');
CkXmlDSigGen_putSignedInfoCanonAlg(gen,'C14N');
CkXmlDSigGen_putSignedInfoDigestMethod(gen,'sha256');

// Create an Object to be added to the Signature.
object1 := CkXml_Create();
CkXml_putTag(object1,'xades:QualifyingProperties');
CkXml_AddAttribute(object1,'xmlns:ds','http://www.w3.org/2000/09/xmldsig#');
CkXml_AddAttribute(object1,'xmlns:xades','http://uri.etsi.org/01903/v1.3.2#');
CkXml_AddAttribute(object1,'Target','#Signature-7f4c4719515a4a0a8ce4d1b983a2ec69');
CkXml_UpdateAttrAt(object1,'xades:SignedProperties',True,'Id','SignedProperties-6573207f4ad64b49b0310f7a9e2dfadc');
CkXml_UpdateChildContent(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_UpdateAttrAt(object1,'xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert|xades:CertDigest|ds:DigestMethod',True,'Algorithm','http://www.w3.org/2000/09/xmldsig#sha1');
CkXml_UpdateChildContent(object1,'xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert|xades:CertDigest|ds:DigestValue','TO BE GENERATED BY CHILKAT');
CkXml_UpdateChildContent(object1,'xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert|xades:IssuerSerial|ds:X509IssuerName','TO BE GENERATED BY CHILKAT');
CkXml_UpdateChildContent(object1,'xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert|xades:IssuerSerial|ds:X509SerialNumber','TO BE GENERATED BY CHILKAT');
CkXml_UpdateAttrAt(object1,'xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat',True,'ObjectReference','');
CkXml_UpdateChildContent(object1,'xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat|xades:Description','document');
CkXml_UpdateChildContent(object1,'xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat|xades:MimeType','application/xml');
CkXml_UpdateChildContent(object1,'xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat|xades:Encoding','UTF-8');

CkXmlDSigGen_AddObject(gen,'',CkXml__getXml(object1),'','');

// -------- Reference 1 --------
CkXmlDSigGen_AddSameDocRef(gen,'','sha256','','','');

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

// Provide a certificate + private key. (PFX password is test123)
cert := CkCert_Create();
success := CkCert_LoadPfxFile(cert,'qa_data/pfx/cert_test123.pfx','test123');
if (success <> True) then
  begin
    Memo1.Lines.Add(CkCert__lastErrorText(cert));
    Exit;
  end;
CkXmlDSigGen_SetX509Cert(gen,cert,True);

CkXmlDSigGen_putKeyInfoType(gen,'X509Data+KeyValue');
CkXmlDSigGen_putX509Type(gen,'IssuerSerial,SubjectName,SKI,Certificate');

// Load XML to be signed...
sbXml := CkStringBuilder_Create();
CkXml_GetXmlSb(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_putBehaviors(gen,'IndentedSignature,UBLDocumentSignatures');

// Sign the XML...
success := CkXmlDSigGen_CreateXmlDSigSb(gen,sbXml);
if (success <> True) then
  begin
    Memo1.Lines.Add(CkXmlDSigGen__lastErrorText(gen));
    Exit;
  end;
// -----------------------------------------------

// Save the signed XML to a file.
success := CkStringBuilder_WriteFile(sbXml,'qa_output/signedXml.xml','utf-8',False);

Memo1.Lines.Add(CkStringBuilder__getAsString(sbXml));

// ----------------------------------------
// Verify the signature we just produced...
verifier := CkXmlDSig_Create();
success := CkXmlDSig_LoadSignatureSb(verifier,sbXml);
if (success <> True) then
  begin
    Memo1.Lines.Add(CkXmlDSig__lastErrorText(verifier));
    Exit;
  end;

// We should have just one signature..
numSigs := CkXmlDSig_getNumSignatures(verifier);
verifyIdx := 0;
while verifyIdx < numSigs do
  begin
    CkXmlDSig_putSelector(verifier,verifyIdx);
    verified := CkXmlDSig_VerifySignature(verifier,True);
    if (verified <> True) then
      begin
        Memo1.Lines.Add(CkXmlDSig__lastErrorText(verifier));
        Exit;
      end;
    verifyIdx := verifyIdx + 1;
  end;

Memo1.Lines.Add('The signature was successfully verified.');

CkXml_Dispose(xmlToSign);
CkXmlDSigGen_Dispose(gen);
CkXml_Dispose(object1);
CkCert_Dispose(cert);
CkStringBuilder_Dispose(sbXml);
CkXmlDSig_Dispose(verifier);

end;
 

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