Dart
Dart
Create JPK_VAT XaDES-BES Signed XML
See more XAdES Examples
Demonstrates how to sign XML for JPK_VAT.Chilkat Dart Downloads
import 'package:chilkat/chilkat.dart';
void main() {
// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.
// This example will sign the following XML document:
// <?xml version="1.0" encoding="utf-8"?>
// <InitUpload xmlns="http://e-dokumenty.mf.gov.pl">
// <DocumentType>JPK</DocumentType>
// <Version>01.02.01.20160617</Version>
// <EncryptionKey algorithm="RSA" encoding="Base64" mode="ECB" padding="PKCS#1">...</EncryptionKey>
// <DocumentList>
// <Document>
// <FormCode schemaVersion="1-1" systemCode="JPK_VAT (3)">JPK_VAT</FormCode>
// <FileName>JPK_VAT_3_v1-1_20181208.xml</FileName>
// <ContentLength>8736</ContentLength>
// <HashValue algorithm="SHA-256" encoding="Base64">JEEI1pItwh6dj/Xe1uts/x61qnjZ4DLHpkRMhmf1oQQ=</HashValue>
// <FileSignatureList filesNumber="1">
// <Packaging>
// <SplitZip mode="zip" type="split"/>
// </Packaging>
// <Encryption>
// <AES block="16" mode="CBC" padding="PKCS#7" size="256">
// <IV bytes="16" encoding="Base64">FFsCRAPYJD3J6cRvd44UDA==</IV>
// </AES>
// </Encryption>
// <FileSignature>
// <OrdinalNumber>1</OrdinalNumber>
// <FileName>JPK_VAT_3_v1-1_20181208-000.xml.zip.aes</FileName>
// <ContentLength>16</ContentLength>
// <HashValue algorithm="MD5" encoding="Base64">BX2DTD3ASC/zF6aq/012Cg==</HashValue>
// </FileSignature>
// </FileSignatureList>
// </Document>
// </DocumentList>
// </InitUpload>
// First we build the XML to be signed.
//
// Use this online tool to generate the code from sample XML:
// Generate Code to Create XML
final xmlToSign = CkXml();
xmlToSign.tag = 'InitUpload';
xmlToSign.addAttribute('xmlns', 'http://e-dokumenty.mf.gov.pl');
xmlToSign.updateChildContent('DocumentType', 'JPK');
xmlToSign.updateChildContent('Version', '01.02.01.20160617');
xmlToSign.updateAttrAt('EncryptionKey', true, 'algorithm', 'RSA');
xmlToSign.updateAttrAt('EncryptionKey', true, 'encoding', 'Base64');
xmlToSign.updateAttrAt('EncryptionKey', true, 'mode', 'ECB');
xmlToSign.updateAttrAt('EncryptionKey', true, 'padding', 'PKCS#1');
xmlToSign.updateChildContent('EncryptionKey', '...');
xmlToSign.updateAttrAt('DocumentList|Document|FormCode', true, 'schemaVersion', '1-1');
xmlToSign.updateAttrAt('DocumentList|Document|FormCode', true, 'systemCode', 'JPK_VAT (3)');
xmlToSign.updateChildContent('DocumentList|Document|FormCode', 'JPK_VAT');
xmlToSign.updateChildContent('DocumentList|Document|FileName', 'JPK_VAT_3_v1-1_20181208.xml');
xmlToSign.updateChildContent('DocumentList|Document|ContentLength', '8736');
xmlToSign.updateAttrAt('DocumentList|Document|HashValue', true, 'algorithm', 'SHA-256');
xmlToSign.updateAttrAt('DocumentList|Document|HashValue', true, 'encoding', 'Base64');
xmlToSign.updateChildContent('DocumentList|Document|HashValue', 'JEEI1pItwh6dj/Xe1uts/x61qnjZ4DLHpkRMhmf1oQQ=');
xmlToSign.updateAttrAt('DocumentList|Document|FileSignatureList', true, 'filesNumber', '1');
xmlToSign.updateAttrAt('DocumentList|Document|FileSignatureList|Packaging|SplitZip', true, 'mode', 'zip');
xmlToSign.updateAttrAt('DocumentList|Document|FileSignatureList|Packaging|SplitZip', true, 'type', 'split');
xmlToSign.updateAttrAt('DocumentList|Document|FileSignatureList|Encryption|AES', true, 'block', '16');
xmlToSign.updateAttrAt('DocumentList|Document|FileSignatureList|Encryption|AES', true, 'mode', 'CBC');
xmlToSign.updateAttrAt('DocumentList|Document|FileSignatureList|Encryption|AES', true, 'padding', 'PKCS#7');
xmlToSign.updateAttrAt('DocumentList|Document|FileSignatureList|Encryption|AES', true, 'size', '256');
xmlToSign.updateAttrAt('DocumentList|Document|FileSignatureList|Encryption|AES|IV', true, 'bytes', '16');
xmlToSign.updateAttrAt('DocumentList|Document|FileSignatureList|Encryption|AES|IV', true, 'encoding', 'Base64');
xmlToSign.updateChildContent('DocumentList|Document|FileSignatureList|Encryption|AES|IV', 'FFsCRAPYJD3J6cRvd44UDA==');
xmlToSign.updateChildContent('DocumentList|Document|FileSignatureList|FileSignature|OrdinalNumber', '1');
xmlToSign.updateChildContent('DocumentList|Document|FileSignatureList|FileSignature|FileName', 'JPK_VAT_3_v1-1_20181208-000.xml.zip.aes');
xmlToSign.updateChildContent('DocumentList|Document|FileSignatureList|FileSignature|ContentLength', '16');
xmlToSign.updateAttrAt('DocumentList|Document|FileSignatureList|FileSignature|HashValue', true, 'algorithm', 'MD5');
xmlToSign.updateAttrAt('DocumentList|Document|FileSignatureList|FileSignature|HashValue', true, 'encoding', 'Base64');
xmlToSign.updateChildContent('DocumentList|Document|FileSignatureList|FileSignature|HashValue', 'BX2DTD3ASC/zF6aq/012Cg==');
// Also see the online tool to generate the code from sample already-signed XML:
// Generate XML Signature Creation Code from an Already-Signed XML Sample
final gen = CkXmlDSigGen();
gen.sigLocation = 'InitUpload';
gen.sigId = 'id-1234';
gen.sigNamespacePrefix = 'ds';
gen.sigNamespaceUri = 'http://www.w3.org/2000/09/xmldsig#';
gen.signedInfoCanonAlg = 'EXCL_C14N';
gen.signedInfoDigestMethod = 'sha256';
// Create an Object to be added to the Signature.
final object1 = CkXml();
object1.tag = 'xades:QualifyingProperties';
object1.addAttribute('Target', '#id-1234');
object1.addAttribute('xmlns:xades', 'http://uri.etsi.org/01903/v1.3.2#');
object1.updateAttrAt('xades:SignedProperties', true, 'Id', 'xades-id-1234');
object1.updateChildContent('xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningTime', 'TO BE GENERATED BY CHILKAT');
object1.updateAttrAt('xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificateV2|xades:Cert|xades:CertDigest|ds:DigestMethod', true, 'Algorithm', 'http://www.w3.org/2001/04/xmlenc#sha256');
object1.updateChildContent('xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificateV2|xades:Cert|xades:CertDigest|ds:DigestValue', 'TO BE GENERATED BY CHILKAT');
object1.updateChildContent('xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificateV2|xades:Cert|xades:IssuerSerialV2', 'TO BE GENERATED BY CHILKAT');
object1.updateAttrAt('xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat', true, 'ObjectReference', '#r-id-1');
object1.updateChildContent('xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat|xades:MimeType', 'text/xml');
gen.addObject('', object1.getXml(), '', '');
// -------- Reference 1 --------
final xml1 = CkXml();
xml1.tag = 'ds:Transforms';
xml1.updateAttrAt('ds:Transform', true, 'Algorithm', 'http://www.w3.org/TR/1999/REC-xpath-19991116');
xml1.updateChildContent('ds:Transform|ds:XPath', 'not(ancestor-or-self::ds:Signature)');
xml1.updateAttrAt('ds:Transform[1]', true, 'Algorithm', 'http://www.w3.org/2001/10/xml-exc-c14n#');
gen.addSameDocRef2('', 'sha256', xml1, '');
gen.setRefIdAttr('', 'r-id-1');
// -------- Reference 2 --------
final xml2 = CkXml();
xml2.tag = 'ds:Transforms';
xml2.updateAttrAt('ds:Transform', true, 'Algorithm', 'http://www.w3.org/2001/10/xml-exc-c14n#');
gen.addObjectRef2('xades-id-1234', 'sha256', xml2, 'http://uri.etsi.org/01903#SignedProperties');
// Provide a certificate + private key. (PFX password is test123)
// See Load Certificate on Smartcard for an example showing how to load the cert from a smartcard..
final cert = CkCert();
try {
cert.loadPfxFile('qa_data/pfx/cert_test123.pfx', 'test123');
} on ChilkatException catch (e) {
print(e.lastErrorText);
return;
}
gen.setX509Cert(cert, true);
gen.keyInfoType = 'X509Data';
gen.x509Type = 'Certificate';
// Load XML to be signed...
final sbXml = CkStringBuilder();
xmlToSign.getXmlSb(sbXml);
gen.behaviors = 'IndentedSignature,TransformSignatureXPath,IssuerSerialHex';
// Sign the XML...
try {
gen.createXmlDSigSb(sbXml);
} on ChilkatException catch (e) {
print(e.lastErrorText);
return;
}
// Save the signed XMl to a file.
sbXml.writeFile('qa_output/signedXml.xml', 'utf-8', false);
print(sbXml.getAsString());
// ----------------------------------------
// Verify the signature we just produced...
final verifier = CkXmlDSig();
try {
verifier.loadSignatureSb(sbXml);
} on ChilkatException catch (e) {
print(e.lastErrorText);
return;
}
try {
verifier.verifySignature(true);
} on ChilkatException catch (e) {
print(e.lastErrorText);
return;
}
print('This signature was successfully verified.');
}