(Visual Basic 6.0) 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evidence that the signature existed at a specific point in time, even if the signer's certificate has expired or been revoked.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 ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

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

Dim success As Long
success = 1
' 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 ChilkatXml
xmlToSign.Tag = "es:Dossier"
success = xmlToSign.AddAttribute("xmlns:xsi","http://www.w3.org/2001/XMLSchema-instance")
success = xmlToSign.AddAttribute("xmlns:ds","http://www.w3.org/2000/09/xmldsig#")
success = xmlToSign.AddAttribute("xmlns","http://uri.etsi.org/01903/v1.3.2#")
success = xmlToSign.AddAttribute("xmlns:es","https://www.microsec.hu/ds/e-szigno30#")
success = xmlToSign.AddAttribute("xsi:schemaLocation","https://www.microsec.hu/ds/e-szigno30# https://www.microsec.hu/ds/e-szigno30.xsd")
success = xmlToSign.UpdateAttrAt("es:DossierProfile",1,"Id","PObject0")
success = xmlToSign.UpdateAttrAt("es:DossierProfile",1,"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"
success = xmlToSign.UpdateAttrAt("es:Documents",1,"Id","Object0")

Dim gen As New ChilkatXmlDSigGen

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 ChilkatXml
object1.Tag = "es:SignatureProfile"
success = object1.AddAttribute("Id","PS9fe8096e-2cac-415d-9222-f6cf2ecb314b")
success = object1.AddAttribute("OBJREF","Object0")
success = object1.AddAttribute("SIGREF","S9fe8096e-2cac-415d-9222-f6cf2ecb314b")
success = object1.AddAttribute("SIGREFLIST","#Object0 #PS9fe8096e-2cac-415d-9222-f6cf2ecb314b #PObject0 #XS9fe8096e-2cac-415d-9222-f6cf2ecb314b")
object1.UpdateChildContent "es:SignerName","EC Minsített-Tesztel Péterke"
object1.UpdateChildContent "es:SDPresented","false"
object1.UpdateChildContent "es:Type","signature"
success = object1.UpdateAttrAt("es:Generator|es:Program",1,"name","e-Szigno")
success = object1.UpdateAttrAt("es:Generator|es:Program",1,"version","3.3.6.8")
success = object1.UpdateAttrAt("es:Generator|es:Device",1,"name","OpenSSL 1.1.1n  15 Mar 2022")
success = object1.UpdateAttrAt("es:Generator|es:Device",1,"type","")

success = gen.AddObject("O1S9fe8096e-2cac-415d-9222-f6cf2ecb314b",object1.GetXml(),"","")

' Create an Object to be added to the Signature.
Dim object2 As New ChilkatXml
object2.Tag = "QualifyingProperties"
success = object2.AddAttribute("Target","#S9fe8096e-2cac-415d-9222-f6cf2ecb314b")
success = object2.AddAttribute("Id","QPS9fe8096e-2cac-415d-9222-f6cf2ecb314b")
success = object2.UpdateAttrAt("SignedProperties",1,"Id","XS9fe8096e-2cac-415d-9222-f6cf2ecb314b")
object2.UpdateChildContent "SignedProperties|SignedSignatureProperties|SigningTime","TO BE GENERATED BY CHILKAT"
success = object2.UpdateAttrAt("SignedProperties|SignedSignatureProperties|SigningCertificateV2|Cert|CertDigest|ds:DigestMethod",1,"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","tesztel"

' Here we have the EncapsulatedTimestamp found in the unsigned signature properties.
success = object2.UpdateAttrAt("UnsignedProperties|UnsignedSignatureProperties|SignatureTimeStamp",1,"Id","T72cb4961-4326-4319-857a-7cf55e7ef899")
success = object2.UpdateAttrAt("UnsignedProperties|UnsignedSignatureProperties|SignatureTimeStamp|ds:CanonicalizationMethod",1,"Algorithm","http://www.w3.org/2001/10/xml-exc-c14n#")
success = object2.UpdateAttrAt("UnsignedProperties|UnsignedSignatureProperties|SignatureTimeStamp|EncapsulatedTimeStamp",1,"Id","ET72cb4961-4326-4319-857a-7cf55e7ef899")
object2.UpdateChildContent "UnsignedProperties|UnsignedSignatureProperties|SignatureTimeStamp|EncapsulatedTimeStamp","TO BE GENERATED BY CHILKAT"
success = object2.UpdateAttrAt("UnsignedProperties|UnsignedSignatureProperties|TimeStampValidationData",1,"xmlns","http://uri.etsi.org/01903/v1.4.1#")
success = object2.UpdateAttrAt("UnsignedProperties|UnsignedSignatureProperties|CertificateValues",1,"Id","CV18c7702d-d45b-44bc-853a-a720f41053cd")
success = object2.UpdateAttrAt("UnsignedProperties|UnsignedSignatureProperties|CertificateValues|EncapsulatedX509Certificate",1,"Id","EC42db04c8-1422-407b-8c42-189353a55268")
object2.UpdateChildContent "UnsignedProperties|UnsignedSignatureProperties|CertificateValues|EncapsulatedX509Certificate","BASE64_CONTENT"
success = object2.UpdateAttrAt("UnsignedProperties|UnsignedSignatureProperties|CertificateValues|EncapsulatedX509Certificate[1]",1,"Id","EC04728b44-a32c-46c1-b9bb-85b1f6b3c7d3")
object2.UpdateChildContent "UnsignedProperties|UnsignedSignatureProperties|CertificateValues|EncapsulatedX509Certificate[1]","BASE64_CONTENT"

success = gen.AddObject("O2S9fe8096e-2cac-415d-9222-f6cf2ecb314b",object2.GetXml(),"","")

' -------- Reference 1 --------
success = gen.AddSameDocRef("Object0","sha256","EXCL_C14N","","")
success = gen.SetRefIdAttr("Object0","Re1f816c4-7898-4544-9b41-f4156dc0c528")

' -------- Reference 2 --------
success = gen.AddObjectRef("PS9fe8096e-2cac-415d-9222-f6cf2ecb314b","sha256","EXCL_C14N","","")
success = gen.SetRefIdAttr("PS9fe8096e-2cac-415d-9222-f6cf2ecb314b","Ra873b616-e568-4c38-ae94-27fbff67cc43")

' -------- Reference 3 --------
success = gen.AddSameDocRef("PObject0","sha256","EXCL_C14N","","")
success = gen.SetRefIdAttr("PObject0","Ra5d85948-5d6a-4914-8c32-242f5d6d9e81")

' -------- Reference 4 --------
success = gen.AddObjectRef("XS9fe8096e-2cac-415d-9222-f6cf2ecb314b","sha256","EXCL_C14N","","http://uri.etsi.org/01903#SignedProperties")
success = 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 ChilkatCert
success = cert.LoadPfxFile("qa_data/pfx/cert_test123.pfx","test123")
If (success <> 1) Then
    Debug.Print cert.LastErrorText
    Exit Sub
End If

success = gen.SetX509Cert(cert,1)

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 ChilkatJsonObject
success = jsonTsa.UpdateString("timestampToken.tsaUrl","http://timestamp.digicert.com")
success = jsonTsa.UpdateBool("timestampToken.requestTsaCert",1)
success = gen.SetTsa(jsonTsa)

' Load XML to be signed...
Dim sbXml As New ChilkatStringBuilder
success = xmlToSign.GetXmlSb(sbXml)

gen.Behaviors = "IndentedSignature,OmitAlreadyDefinedSigNamespace"

' Sign the XML...
success = gen.CreateXmlDSigSb(sbXml)
If (success <> 1) Then
    Debug.Print gen.LastErrorText
    Exit Sub
End If

' -----------------------------------------------

' Save the signed XML to a file.
success = sbXml.WriteFile("c:/temp/qa_output/signedXml.xml","utf-8",0)

Debug.Print sbXml.GetAsString()

' ----------------------------------------
' Verify the signatures we just produced...
Dim verifier As New ChilkatXmlDSig
success = verifier.LoadSignatureSb(sbXml)
If (success <> 1) Then
    Debug.Print verifier.LastErrorText
    Exit Sub
End If

Dim numSigs As Long
numSigs = verifier.NumSignatures
Dim verifyIdx As Long
verifyIdx = 0
Do While verifyIdx < numSigs
    verifier.Selector = verifyIdx
    Dim verified As Long
    verified = verifier.VerifySignature(1)
    If (verified <> 1) Then
        Debug.Print verifier.LastErrorText
        Exit Sub
    End If

    verifyIdx = verifyIdx + 1
Loop
Debug.Print "All signatures were successfully verified."