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(Java) Create JPK_VAT XaDES-BES Signed XML

Demonstrates how to sign XML for JPK_VAT.

Chilkat Java Downloads

Java Libs for Windows, MacOS, Linux, Alpine Linux, Solaris

Java Libs for Android

import com.chilkatsoft.*;

public class ChilkatExample {

  static {
    try {
        System.loadLibrary("chilkat");
    } catch (UnsatisfiedLinkError e) {
      System.err.println("Native code library failed to load.\n" + e);
      System.exit(1);
    }
  }

  public static void main(String argv[])
  {
    // 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

    boolean success = true;
    CkXml xmlToSign = new CkXml();
    xmlToSign.put_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

    CkXmlDSigGen gen = new CkXmlDSigGen();

    gen.put_SigLocation("InitUpload");
    gen.put_SigId("id-1234");
    gen.put_SigNamespacePrefix("ds");
    gen.put_SigNamespaceUri("http://www.w3.org/2000/09/xmldsig#");
    gen.put_SignedInfoCanonAlg("EXCL_C14N");
    gen.put_SignedInfoDigestMethod("sha256");

    // Create an Object to be added to the Signature.
    CkXml object1 = new CkXml();
    object1.put_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 --------
    CkXml xml1 = new CkXml();
    xml1.put_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 --------
    CkXml xml2 = new CkXml();
    xml2.put_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..
    CkCert cert = new CkCert();
    success = cert.LoadPfxFile("qa_data/pfx/cert_test123.pfx","test123");
    if (success != true) {
        System.out.println(cert.lastErrorText());
        return;
        }

    gen.SetX509Cert(cert,true);

    gen.put_KeyInfoType("X509Data");
    gen.put_X509Type("Certificate");

    // Load XML to be signed...
    CkStringBuilder sbXml = new CkStringBuilder();
    xmlToSign.GetXmlSb(sbXml);

    gen.put_Behaviors("IndentedSignature,TransformSignatureXPath,IssuerSerialHex");

    // Sign the XML...
    success = gen.CreateXmlDSigSb(sbXml);
    if (success != true) {
        System.out.println(gen.lastErrorText());
        return;
        }

    // Save the signed XMl to a file.
    success = sbXml.WriteFile("qa_output/signedXml.xml","utf-8",false);

    System.out.println(sbXml.getAsString());

    // ----------------------------------------
    // Verify the signature we just produced...
    CkXmlDSig verifier = new CkXmlDSig();
    success = verifier.LoadSignatureSb(sbXml);
    if (success != true) {
        System.out.println(verifier.lastErrorText());
        return;
        }

    boolean verified = verifier.VerifySignature(true);
    if (verified != true) {
        System.out.println(verifier.lastErrorText());
        return;
        }

    System.out.println("This signature was successfully verified.");
  }
}

 

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