VB.NET
VB.NET
Create XAdES-T Signed XML
See more XAdES Examples
This example signs XML using the XAdES-T profile. XAdES-T is a profile within the XAdES standard that adds support for secure timestamping of signatures.Secure timestamping involves adding a timestamp to the signature, indicating the exact time when the signature was applied.
Timestamping enhances the long-term validity of signatures by providing evidence that the signature existed at a specific point in time, even if the signer's certificate has expired or been revoked.
XAdES-T signatures include elements for embedding timestamp data within the XML signature, along with information about the timestamp authority and the timestamp verification process.
XAdES-T signatures are suitable for scenarios where long-term validity and integrity of signatures are essential, such as in legal and regulatory contexts where archived documents may need to be validated years or decades later.
Chilkat VB.NET Downloads
Dim success As Boolean = False
' This example requires the Chilkat API to have been previously unlocked.
' See Global Unlock Sample for sample code.
success = True
' Create the XML to be signed...
' Use this online tool to generate code from sample XML:
' Generate Code to Create XML
' <?xml version="1.0" encoding="UTF-8"?>
' <es:Dossier xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:ds="http://www.w3.org/2000/09/xmldsig#" xmlns="http://uri.etsi.org/01903/v1.3.2#" xmlns:es="https://www.microsec.hu/ds/e-szigno30#" xsi:schemaLocation="https://www.microsec.hu/ds/e-szigno30# https://www.microsec.hu/ds/e-szigno30.xsd">
' <es:DossierProfile Id="PObject0" OBJREF="Object0">
' <es:Title>e-akta.es3</es:Title>
' <es:E-category>electronic dossier</es:E-category>
' <es:CreationDate>2022-12-02T07:55:16Z</es:CreationDate>
' </es:DossierProfile>
' <es:Documents Id="Object0"/>
' </es:Dossier>
Dim xmlToSign As New Chilkat.Xml
xmlToSign.Tag = "es:Dossier"
xmlToSign.AddAttribute("xmlns:xsi","http://www.w3.org/2001/XMLSchema-instance")
xmlToSign.AddAttribute("xmlns:ds","http://www.w3.org/2000/09/xmldsig#")
xmlToSign.AddAttribute("xmlns","http://uri.etsi.org/01903/v1.3.2#")
xmlToSign.AddAttribute("xmlns:es","https://www.microsec.hu/ds/e-szigno30#")
xmlToSign.AddAttribute("xsi:schemaLocation","https://www.microsec.hu/ds/e-szigno30# https://www.microsec.hu/ds/e-szigno30.xsd")
xmlToSign.UpdateAttrAt("es:DossierProfile",True,"Id","PObject0")
xmlToSign.UpdateAttrAt("es:DossierProfile",True,"OBJREF","Object0")
xmlToSign.UpdateChildContent("es:DossierProfile|es:Title","e-akta.es3")
xmlToSign.UpdateChildContent("es:DossierProfile|es:E-category","electronic dossier")
xmlToSign.UpdateChildContent("es:DossierProfile|es:CreationDate","2022-12-02T07:55:16Z")
xmlToSign.UpdateAttrAt("es:Documents",True,"Id","Object0")
Dim gen As New Chilkat.XmlDSigGen
gen.SigLocation = "es:Dossier"
gen.SigLocationMod = 0
gen.SigId = "S9fe8096e-2cac-415d-9222-f6cf2ecb314b"
gen.SigValueId = "VS9fe8096e-2cac-415d-9222-f6cf2ecb314b"
gen.SignedInfoId = "SIS9fe8096e-2cac-415d-9222-f6cf2ecb314b"
gen.SignedInfoCanonAlg = "EXCL_C14N"
gen.SignedInfoDigestMethod = "sha256"
' Set the KeyInfoId before adding references..
gen.KeyInfoId = "KS9fe8096e-2cac-415d-9222-f6cf2ecb314b"
' Create an Object to be added to the Signature.
Dim object1 As New Chilkat.Xml
object1.Tag = "es:SignatureProfile"
object1.AddAttribute("Id","PS9fe8096e-2cac-415d-9222-f6cf2ecb314b")
object1.AddAttribute("OBJREF","Object0")
object1.AddAttribute("SIGREF","S9fe8096e-2cac-415d-9222-f6cf2ecb314b")
object1.AddAttribute("SIGREFLIST","#Object0 #PS9fe8096e-2cac-415d-9222-f6cf2ecb314b #PObject0 #XS9fe8096e-2cac-415d-9222-f6cf2ecb314b")
object1.UpdateChildContent("es:SignerName","EC Minősített-Tesztelő Péterke")
object1.UpdateChildContent("es:SDPresented","false")
object1.UpdateChildContent("es:Type","signature")
object1.UpdateAttrAt("es:Generator|es:Program",True,"name","e-Szigno")
object1.UpdateAttrAt("es:Generator|es:Program",True,"version","3.3.6.8")
object1.UpdateAttrAt("es:Generator|es:Device",True,"name","OpenSSL 1.1.1n 15 Mar 2022")
object1.UpdateAttrAt("es:Generator|es:Device",True,"type","")
gen.AddObject("O1S9fe8096e-2cac-415d-9222-f6cf2ecb314b",object1.GetXml(),"","")
' Create an Object to be added to the Signature.
Dim object2 As New Chilkat.Xml
object2.Tag = "QualifyingProperties"
object2.AddAttribute("Target","#S9fe8096e-2cac-415d-9222-f6cf2ecb314b")
object2.AddAttribute("Id","QPS9fe8096e-2cac-415d-9222-f6cf2ecb314b")
object2.UpdateAttrAt("SignedProperties",True,"Id","XS9fe8096e-2cac-415d-9222-f6cf2ecb314b")
object2.UpdateChildContent("SignedProperties|SignedSignatureProperties|SigningTime","TO BE GENERATED BY CHILKAT")
object2.UpdateAttrAt("SignedProperties|SignedSignatureProperties|SigningCertificateV2|Cert|CertDigest|ds:DigestMethod",True,"Algorithm","http://www.w3.org/2001/04/xmlenc#sha256")
object2.UpdateChildContent("SignedProperties|SignedSignatureProperties|SigningCertificateV2|Cert|CertDigest|ds:DigestValue","TO BE GENERATED BY CHILKAT")
object2.UpdateChildContent("SignedProperties|SignedSignatureProperties|SigningCertificateV2|Cert|IssuerSerialV2","TO BE GENERATED BY CHILKAT")
object2.UpdateChildContent("SignedProperties|SignedSignatureProperties|SignaturePolicyIdentifier|SignaturePolicyImplied","")
object2.UpdateChildContent("SignedProperties|SignedSignatureProperties|SignerRoleV2|ClaimedRoles|ClaimedRole","tesztelő")
' Here we have the EncapsulatedTimestamp found in the unsigned signature properties.
object2.UpdateAttrAt("UnsignedProperties|UnsignedSignatureProperties|SignatureTimeStamp",True,"Id","T72cb4961-4326-4319-857a-7cf55e7ef899")
object2.UpdateAttrAt("UnsignedProperties|UnsignedSignatureProperties|SignatureTimeStamp|ds:CanonicalizationMethod",True,"Algorithm","http://www.w3.org/2001/10/xml-exc-c14n#")
object2.UpdateAttrAt("UnsignedProperties|UnsignedSignatureProperties|SignatureTimeStamp|EncapsulatedTimeStamp",True,"Id","ET72cb4961-4326-4319-857a-7cf55e7ef899")
object2.UpdateChildContent("UnsignedProperties|UnsignedSignatureProperties|SignatureTimeStamp|EncapsulatedTimeStamp","TO BE GENERATED BY CHILKAT")
object2.UpdateAttrAt("UnsignedProperties|UnsignedSignatureProperties|TimeStampValidationData",True,"xmlns","http://uri.etsi.org/01903/v1.4.1#")
object2.UpdateAttrAt("UnsignedProperties|UnsignedSignatureProperties|CertificateValues",True,"Id","CV18c7702d-d45b-44bc-853a-a720f41053cd")
object2.UpdateAttrAt("UnsignedProperties|UnsignedSignatureProperties|CertificateValues|EncapsulatedX509Certificate",True,"Id","EC42db04c8-1422-407b-8c42-189353a55268")
object2.UpdateChildContent("UnsignedProperties|UnsignedSignatureProperties|CertificateValues|EncapsulatedX509Certificate","BASE64_CONTENT")
object2.UpdateAttrAt("UnsignedProperties|UnsignedSignatureProperties|CertificateValues|EncapsulatedX509Certificate[1]",True,"Id","EC04728b44-a32c-46c1-b9bb-85b1f6b3c7d3")
object2.UpdateChildContent("UnsignedProperties|UnsignedSignatureProperties|CertificateValues|EncapsulatedX509Certificate[1]","BASE64_CONTENT")
gen.AddObject("O2S9fe8096e-2cac-415d-9222-f6cf2ecb314b",object2.GetXml(),"","")
' -------- Reference 1 --------
gen.AddSameDocRef("Object0","sha256","EXCL_C14N","","")
gen.SetRefIdAttr("Object0","Re1f816c4-7898-4544-9b41-f4156dc0c528")
' -------- Reference 2 --------
gen.AddObjectRef("PS9fe8096e-2cac-415d-9222-f6cf2ecb314b","sha256","EXCL_C14N","","")
gen.SetRefIdAttr("PS9fe8096e-2cac-415d-9222-f6cf2ecb314b","Ra873b616-e568-4c38-ae94-27fbff67cc43")
' -------- Reference 3 --------
gen.AddSameDocRef("PObject0","sha256","EXCL_C14N","","")
gen.SetRefIdAttr("PObject0","Ra5d85948-5d6a-4914-8c32-242f5d6d9e81")
' -------- Reference 4 --------
gen.AddObjectRef("XS9fe8096e-2cac-415d-9222-f6cf2ecb314b","sha256","EXCL_C14N","","http://uri.etsi.org/01903#SignedProperties")
gen.SetRefIdAttr("XS9fe8096e-2cac-415d-9222-f6cf2ecb314b","Ra7412a43-dc05-4e0a-ac84-e9a070214757")
' Provide a certificate + private key. (PFX password is test123)
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"
' -------------------------------------------------------------------------------------------
' To have the EncapsulatedTimeStamp automatically added, we only need to do 2 things.
' 1) Add the <xades:EncapsulatedTimeStamp Encoding="http://uri.etsi.org/01903/v1.2.2#DER">TO BE GENERATED BY CHILKAT</xades:EncapsulatedTimeStamp>
' to the unsigned properties.
' 2) Specify the TSA URL (Timestamping Authority URL).
' Here we specify the TSA URL:
' -------------------------------------------------------------------------------------------
Dim jsonTsa As New Chilkat.JsonObject
jsonTsa.UpdateString("timestampToken.tsaUrl","http://timestamp.digicert.com")
jsonTsa.UpdateBool("timestampToken.requestTsaCert",True)
gen.SetTsa(jsonTsa)
' Load XML to be signed...
Dim sbXml As New Chilkat.StringBuilder
xmlToSign.GetXmlSb(sbXml)
gen.Behaviors = "IndentedSignature,OmitAlreadyDefinedSigNamespace"
' 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("c:/temp/qa_output/signedXml.xml","utf-8",False)
Debug.WriteLine(sbXml.GetAsString())
' ----------------------------------------
' Verify the signatures 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 numSigs As Integer = verifier.NumSignatures
Dim verifyIdx As Integer = 0
While verifyIdx < numSigs
verifier.Selector = verifyIdx
Dim verified As Boolean = verifier.VerifySignature(True)
If (verified <> True) Then
Debug.WriteLine(verifier.LastErrorText)
Exit Sub
End If
verifyIdx = verifyIdx + 1
End While
Debug.WriteLine("All signatures were successfully verified.")