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(VB.NET UWP/WinRT) Create JPK_VAT XaDES-BES Signed XML

Demonstrates how to sign XML for JPK_VAT.

Note: This example requires Chilkat v9.5.0.77 or greater. If you see this example before v9.5.0.77 is released, contact support@chilkatsoft.com for a pre-release.

Chilkat Universal Windows Platform (UWP) / WinRT Downloads

Chilkat for the Universal Windows Platform (UWP)

' 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

Dim success As Boolean = True
Dim xmlToSign As New Chilkat.Xml
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

Dim gen As New Chilkat.XmlDSigGen

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.
Dim object1 As New Chilkat.Xml
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:SigningCertificate|xades:Cert|xades:CertDigest|ds:DigestMethod",True,"Algorithm","http://www.w3.org/2000/09/xmldsig#sha1")
object1.UpdateChildContent("xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert|xades:CertDigest|ds:DigestValue","TO BE GENERATED BY CHILKAT")
object1.UpdateChildContent("xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert|xades:IssuerSerial|ds:X509IssuerName","TO BE GENERATED BY CHILKAT")
object1.UpdateChildContent("xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert|xades:IssuerSerial|ds:X509SerialNumber","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 --------
gen.AddSameDocRef("","sha256","EXCL_C14N","","")
gen.SetRefIdAttr("","r-id-1")

' -------- Reference 2 --------
gen.AddObjectRef("xades-id-1234","sha256","EXCL_C14N","","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..
Dim cert As New Chilkat.Cert
success = cert.LoadPfxFile("qa_data/pfx/cert_test123.pfx","test123")
If (success <> True) Then
    Debug.WriteLine(cert.LastErrorText)
    Exit Sub
End If

gen.SetX509Cert(cert,True)

gen.KeyInfoType = "X509Data"
gen.X509Type = "Certificate"

' Load XML to be signed...
Dim sbXml As New Chilkat.StringBuilder
xmlToSign.GetXmlSb(sbXml)

gen.Behaviors = "IndentedSignature,TransformSignatureXPath,IssuerSerialHex"

' Sign the XML...
success = gen.CreateXmlDSigSb(sbXml)
If (success <> True) Then
    Debug.WriteLine(gen.LastErrorText)
    Exit Sub
End If


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

Debug.WriteLine(sbXml.GetAsString())

' ----------------------------------------
' Verify the signature we just produced...
Dim verifier As New Chilkat.XmlDSig
success = verifier.LoadSignatureSb(sbXml)
If (success <> True) Then
    Debug.WriteLine(verifier.LastErrorText)
    Exit Sub
End If


Dim verified As Boolean = verifier.VerifySignature(True)
If (verified <> True) Then
    Debug.WriteLine(verifier.LastErrorText)
    Exit Sub
End If

Debug.WriteLine("This signature was successfully verified.")

 

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