(Lianja) 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evidence that the signature existed at a specific point in time, even if the signer's certificate has expired or been revoked.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.

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

llSuccess = .T.
// 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>

loXmlToSign = createobject("CkXml")
loXmlToSign.Tag = "es:Dossier"
loXmlToSign.AddAttribute("xmlns:xsi","http://www.w3.org/2001/XMLSchema-instance")
loXmlToSign.AddAttribute("xmlns:ds","http://www.w3.org/2000/09/xmldsig#")
loXmlToSign.AddAttribute("xmlns","http://uri.etsi.org/01903/v1.3.2#")
loXmlToSign.AddAttribute("xmlns:es","https://www.microsec.hu/ds/e-szigno30#")
loXmlToSign.AddAttribute("xsi:schemaLocation","https://www.microsec.hu/ds/e-szigno30# https://www.microsec.hu/ds/e-szigno30.xsd")
loXmlToSign.UpdateAttrAt("es:DossierProfile",.T.,"Id","PObject0")
loXmlToSign.UpdateAttrAt("es:DossierProfile",.T.,"OBJREF","Object0")
loXmlToSign.UpdateChildContent("es:DossierProfile|es:Title","e-akta.es3")
loXmlToSign.UpdateChildContent("es:DossierProfile|es:E-category","electronic dossier")
loXmlToSign.UpdateChildContent("es:DossierProfile|es:CreationDate","2022-12-02T07:55:16Z")
loXmlToSign.UpdateAttrAt("es:Documents",.T.,"Id","Object0")

loGen = createobject("CkXmlDSigGen")

loGen.SigLocation = "es:Dossier"
loGen.SigLocationMod = 0
loGen.SigId = "S9fe8096e-2cac-415d-9222-f6cf2ecb314b"
loGen.SigValueId = "VS9fe8096e-2cac-415d-9222-f6cf2ecb314b"
loGen.SignedInfoId = "SIS9fe8096e-2cac-415d-9222-f6cf2ecb314b"
loGen.SignedInfoCanonAlg = "EXCL_C14N"
loGen.SignedInfoDigestMethod = "sha256"

// Set the KeyInfoId before adding references..
loGen.KeyInfoId = "KS9fe8096e-2cac-415d-9222-f6cf2ecb314b"

// Create an Object to be added to the Signature.
loObject1 = createobject("CkXml")
loObject1.Tag = "es:SignatureProfile"
loObject1.AddAttribute("Id","PS9fe8096e-2cac-415d-9222-f6cf2ecb314b")
loObject1.AddAttribute("OBJREF","Object0")
loObject1.AddAttribute("SIGREF","S9fe8096e-2cac-415d-9222-f6cf2ecb314b")
loObject1.AddAttribute("SIGREFLIST","#Object0 #PS9fe8096e-2cac-415d-9222-f6cf2ecb314b #PObject0 #XS9fe8096e-2cac-415d-9222-f6cf2ecb314b")
loObject1.UpdateChildContent("es:SignerName","EC Minősített-Tesztelő Péterke")
loObject1.UpdateChildContent("es:SDPresented","false")
loObject1.UpdateChildContent("es:Type","signature")
loObject1.UpdateAttrAt("es:Generator|es:Program",.T.,"name","e-Szigno")
loObject1.UpdateAttrAt("es:Generator|es:Program",.T.,"version","3.3.6.8")
loObject1.UpdateAttrAt("es:Generator|es:Device",.T.,"name","OpenSSL 1.1.1n  15 Mar 2022")
loObject1.UpdateAttrAt("es:Generator|es:Device",.T.,"type","")

loGen.AddObject("O1S9fe8096e-2cac-415d-9222-f6cf2ecb314b",loObject1.GetXml(),"","")

// Create an Object to be added to the Signature.
loObject2 = createobject("CkXml")
loObject2.Tag = "QualifyingProperties"
loObject2.AddAttribute("Target","#S9fe8096e-2cac-415d-9222-f6cf2ecb314b")
loObject2.AddAttribute("Id","QPS9fe8096e-2cac-415d-9222-f6cf2ecb314b")
loObject2.UpdateAttrAt("SignedProperties",.T.,"Id","XS9fe8096e-2cac-415d-9222-f6cf2ecb314b")
loObject2.UpdateChildContent("SignedProperties|SignedSignatureProperties|SigningTime","TO BE GENERATED BY CHILKAT")
loObject2.UpdateAttrAt("SignedProperties|SignedSignatureProperties|SigningCertificateV2|Cert|CertDigest|ds:DigestMethod",.T.,"Algorithm","http://www.w3.org/2001/04/xmlenc#sha256")
loObject2.UpdateChildContent("SignedProperties|SignedSignatureProperties|SigningCertificateV2|Cert|CertDigest|ds:DigestValue","TO BE GENERATED BY CHILKAT")
loObject2.UpdateChildContent("SignedProperties|SignedSignatureProperties|SigningCertificateV2|Cert|IssuerSerialV2","TO BE GENERATED BY CHILKAT")
loObject2.UpdateChildContent("SignedProperties|SignedSignatureProperties|SignaturePolicyIdentifier|SignaturePolicyImplied","")
loObject2.UpdateChildContent("SignedProperties|SignedSignatureProperties|SignerRoleV2|ClaimedRoles|ClaimedRole","tesztelő")

// Here we have the EncapsulatedTimestamp found in the unsigned signature properties.
loObject2.UpdateAttrAt("UnsignedProperties|UnsignedSignatureProperties|SignatureTimeStamp",.T.,"Id","T72cb4961-4326-4319-857a-7cf55e7ef899")
loObject2.UpdateAttrAt("UnsignedProperties|UnsignedSignatureProperties|SignatureTimeStamp|ds:CanonicalizationMethod",.T.,"Algorithm","http://www.w3.org/2001/10/xml-exc-c14n#")
loObject2.UpdateAttrAt("UnsignedProperties|UnsignedSignatureProperties|SignatureTimeStamp|EncapsulatedTimeStamp",.T.,"Id","ET72cb4961-4326-4319-857a-7cf55e7ef899")
loObject2.UpdateChildContent("UnsignedProperties|UnsignedSignatureProperties|SignatureTimeStamp|EncapsulatedTimeStamp","TO BE GENERATED BY CHILKAT")
loObject2.UpdateAttrAt("UnsignedProperties|UnsignedSignatureProperties|TimeStampValidationData",.T.,"xmlns","http://uri.etsi.org/01903/v1.4.1#")
loObject2.UpdateAttrAt("UnsignedProperties|UnsignedSignatureProperties|CertificateValues",.T.,"Id","CV18c7702d-d45b-44bc-853a-a720f41053cd")
loObject2.UpdateAttrAt("UnsignedProperties|UnsignedSignatureProperties|CertificateValues|EncapsulatedX509Certificate",.T.,"Id","EC42db04c8-1422-407b-8c42-189353a55268")
loObject2.UpdateChildContent("UnsignedProperties|UnsignedSignatureProperties|CertificateValues|EncapsulatedX509Certificate","BASE64_CONTENT")
loObject2.UpdateAttrAt("UnsignedProperties|UnsignedSignatureProperties|CertificateValues|EncapsulatedX509Certificate[1]",.T.,"Id","EC04728b44-a32c-46c1-b9bb-85b1f6b3c7d3")
loObject2.UpdateChildContent("UnsignedProperties|UnsignedSignatureProperties|CertificateValues|EncapsulatedX509Certificate[1]","BASE64_CONTENT")

loGen.AddObject("O2S9fe8096e-2cac-415d-9222-f6cf2ecb314b",loObject2.GetXml(),"","")

// -------- Reference 1 --------
loGen.AddSameDocRef("Object0","sha256","EXCL_C14N","","")
loGen.SetRefIdAttr("Object0","Re1f816c4-7898-4544-9b41-f4156dc0c528")

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

// -------- Reference 3 --------
loGen.AddSameDocRef("PObject0","sha256","EXCL_C14N","","")
loGen.SetRefIdAttr("PObject0","Ra5d85948-5d6a-4914-8c32-242f5d6d9e81")

// -------- Reference 4 --------
loGen.AddObjectRef("XS9fe8096e-2cac-415d-9222-f6cf2ecb314b","sha256","EXCL_C14N","","http://uri.etsi.org/01903#SignedProperties")
loGen.SetRefIdAttr("XS9fe8096e-2cac-415d-9222-f6cf2ecb314b","Ra7412a43-dc05-4e0a-ac84-e9a070214757")

// Provide a certificate + private key. (PFX password is test123)
loCert = createobject("CkCert")
llSuccess = loCert.LoadPfxFile("qa_data/pfx/cert_test123.pfx","test123")
if (llSuccess <> .T.) then
    ? loCert.LastErrorText
    release loXmlToSign
    release loGen
    release loObject1
    release loObject2
    release loCert
    return
endif

loGen.SetX509Cert(loCert,.T.)

loGen.KeyInfoType = "X509Data"
loGen.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:
// -------------------------------------------------------------------------------------------

loJsonTsa = createobject("CkJsonObject")
loJsonTsa.UpdateString("timestampToken.tsaUrl","http://timestamp.digicert.com")
loJsonTsa.UpdateBool("timestampToken.requestTsaCert",.T.)
loGen.SetTsa(loJsonTsa)

// Load XML to be signed...
loSbXml = createobject("CkStringBuilder")
loXmlToSign.GetXmlSb(loSbXml)

loGen.Behaviors = "IndentedSignature,OmitAlreadyDefinedSigNamespace"

// Sign the XML...
llSuccess = loGen.CreateXmlDSigSb(loSbXml)
if (llSuccess <> .T.) then
    ? loGen.LastErrorText
    release loXmlToSign
    release loGen
    release loObject1
    release loObject2
    release loCert
    release loJsonTsa
    release loSbXml
    return
endif

// -----------------------------------------------

// Save the signed XML to a file.
llSuccess = loSbXml.WriteFile("c:/temp/qa_output/signedXml.xml","utf-8",.F.)

? loSbXml.GetAsString()

// ----------------------------------------
// Verify the signatures we just produced...
loVerifier = createobject("CkXmlDSig")
llSuccess = loVerifier.LoadSignatureSb(loSbXml)
if (llSuccess <> .T.) then
    ? loVerifier.LastErrorText
    release loXmlToSign
    release loGen
    release loObject1
    release loObject2
    release loCert
    release loJsonTsa
    release loSbXml
    release loVerifier
    return
endif

lnNumSigs = loVerifier.NumSignatures
lnVerifyIdx = 0
do while lnVerifyIdx < lnNumSigs
    loVerifier.Selector = lnVerifyIdx
    llVerified = loVerifier.VerifySignature(.T.)
    if (llVerified <> .T.) then
        ? loVerifier.LastErrorText
        release loXmlToSign
        release loGen
        release loObject1
        release loObject2
        release loCert
        release loJsonTsa
        release loSbXml
        release loVerifier
        return
    endif

    lnVerifyIdx = lnVerifyIdx + 1
enddo
? "All signatures were successfully verified."


release loXmlToSign
release loGen
release loObject1
release loObject2
release loCert
release loJsonTsa
release loSbXml
release loVerifier