(PowerBuilder) XAdES using TSA Requiring Client Certificate

See more XML Digital Signatures Examples

Demonstrates how to create an XMLDSig (XAdES) signed document which includes an EncapsulatedTimestamp using a TSA (TimeStamp Authority) server requiring client certificate authentication. One such TSA is https://www3.postsignum.cz/TSS/TSS_crt/

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integer li_rc
integer li_Success
oleobject loo_SbXml
oleobject loo_Gen
oleobject loo_Object1
oleobject loo_Cert
oleobject loo_JsonTsa
oleobject loo_Http

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

li_Success = 1

// Load the XML to be signed.  For example, the XML to be signed might contain something like this:

// <?xml version="1.0" encoding="utf-8"?>
// <TransakcniLogSystemu xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://nsess.public.cz/erms_trans/v_01_01" Id="Signature1">
//   <TransLogInfo>
//     <Identifikator>XYZ ABC</Identifikator>
//     <DatumVzniku>2022-12-20T14:39:02.3625922+01:00</DatumVzniku>
//     <DatumCasOd>2022-12-20T14:26:26.88</DatumCasOd>
//     <DatumCasDo>2022-12-20T14:39:02.287</DatumCasDo>
//     <Software>XYZ</Software>
//     <VerzeSoftware>2.0.19.32</VerzeSoftware>
//   </TransLogInfo>
//   <Udalosti>
//     <Udalost>
//       <Poradi>1</Poradi>
// ...

// Load the XML to be signed from a file.
// (XML can be loaded from other source, such as a string variable.)
loo_SbXml = create oleobject
li_rc = loo_SbXml.ConnectToNewObject("Chilkat_9_5_0.StringBuilder")
if li_rc < 0 then
    destroy loo_SbXml
    MessageBox("Error","Connecting to COM object failed")
    return
end if
li_Success = loo_SbXml.LoadFile("xmlToSign.xml","utf-8")

loo_Gen = create oleobject
li_rc = loo_Gen.ConnectToNewObject("Chilkat_9_5_0.XmlDSigGen")

loo_Gen.SigLocation = "TransakcniLogSystemu"
loo_Gen.SigLocationMod = 0
loo_Gen.SigId = "SignatureID-Signature1"
loo_Gen.SigNamespacePrefix = "ds"
loo_Gen.SigNamespaceUri = "http://www.w3.org/2000/09/xmldsig#"
loo_Gen.SignedInfoCanonAlg = "C14N"
loo_Gen.SignedInfoDigestMethod = "sha256"

// Set the KeyInfoId before adding references..
loo_Gen.KeyInfoId = "KeyInfoId-Signature-Signature1"

// Create an Object to be added to the Signature.

// Note: Chilkat will automatically fill in the values marked as "TO BE GENERATED BY CHILKAT" at the time of signing.
// The EncapsulatedTimestamp will be automatically generated.

loo_Object1 = create oleobject
li_rc = loo_Object1.ConnectToNewObject("Chilkat_9_5_0.Xml")

loo_Object1.Tag = "xades:QualifyingProperties"
loo_Object1.AddAttribute("Target","#Signature1")

loo_Object1.UpdateAttrAt("xades:SignedProperties",1,"Id","SignedProperties-Signature-Signature1")
loo_Object1.UpdateChildContent("xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningTime","TO BE GENERATED BY CHILKAT")
loo_Object1.UpdateAttrAt("xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert|xades:CertDigest|ds:DigestMethod",1,"Algorithm","http://www.w3.org/2001/04/xmlenc#sha256")
loo_Object1.UpdateChildContent("xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert|xades:CertDigest|ds:DigestValue","TO BE GENERATED BY CHILKAT")
loo_Object1.UpdateChildContent("xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert|xades:IssuerSerial|ds:X509IssuerName","TO BE GENERATED BY CHILKAT")
loo_Object1.UpdateChildContent("xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert|xades:IssuerSerial|ds:X509SerialNumber","TO BE GENERATED BY CHILKAT")

// The EncapsulatedTimestamp will be included in the unsigned properties.
loo_Object1.UpdateAttrAt("xades:UnsignedProperties|xades:UnsignedSignatureProperties|xades:SignatureTimeStamp",1,"Id","signature-timestamp-5561-8212-3316-5191")
loo_Object1.UpdateAttrAt("xades:UnsignedProperties|xades:UnsignedSignatureProperties|xades:SignatureTimeStamp|ds:CanonicalizationMethod",1,"Algorithm","http://www.w3.org/2001/10/xml-exc-c14n#")
loo_Object1.UpdateAttrAt("xades:UnsignedProperties|xades:UnsignedSignatureProperties|xades:SignatureTimeStamp|xades:EncapsulatedTimeStamp",1,"Encoding","http://uri.etsi.org/01903/v1.2.2#DER")
loo_Object1.UpdateChildContent("xades:UnsignedProperties|xades:UnsignedSignatureProperties|xades:SignatureTimeStamp|xades:EncapsulatedTimeStamp","TO BE GENERATED BY CHILKAT")

loo_Gen.AddObject("XadesObjectId-Signature1",loo_Object1.GetXml(),"","")

// -------- Reference 1 --------
loo_Gen.AddObjectRef("SignedProperties-Signature-Signature1","sha256","EXCL_C14N","","http://uri.etsi.org/01903#SignedProperties")

// -------- Reference 2 --------
loo_Gen.AddSameDocRef("KeyInfoId-Signature-Signature1","sha256","EXCL_C14N","","")
loo_Gen.SetRefIdAttr("KeyInfoId-Signature-Signature1","ReferenceKeyInfo")

// -------- Reference 3 --------
loo_Gen.AddSameDocRef("","sha256","EXCL_C14N","","")
loo_Gen.SetRefIdAttr("","Reference-Signature1")

// Provide a certificate + private key. (PFX password is test123)
loo_Cert = create oleobject
li_rc = loo_Cert.ConnectToNewObject("Chilkat_9_5_0.Cert")

li_Success = loo_Cert.LoadPfxFile("qa_data/pfx/cert_test123.pfx","test123")
if li_Success <> 1 then
    Write-Debug loo_Cert.LastErrorText
    destroy loo_SbXml
    destroy loo_Gen
    destroy loo_Object1
    destroy loo_Cert
    return
end if

loo_Gen.SetX509Cert(loo_Cert,1)

loo_Gen.KeyInfoType = "X509Data"
loo_Gen.X509Type = "Certificate"

loo_Gen.Behaviors = "IndentedSignature"

// -------------------------------------------------------------------------------------------
// To have the EncapsulatedTimeStamp automatically added... 
// 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.  (This was accomplished in the above code.)
// 2) Specify the TSA URL (Timestamping Authority URL).
//    Here we specify the TSA URL:
// -------------------------------------------------------------------------------------------

loo_JsonTsa = create oleobject
li_rc = loo_JsonTsa.ConnectToNewObject("Chilkat_9_5_0.JsonObject")

loo_JsonTsa.UpdateString("timestampToken.tsaUrl","https://www3.postsignum.cz/TSS/TSS_crt/")
loo_JsonTsa.UpdateBool("timestampToken.requestTsaCert",1)
loo_Gen.SetTsa(loo_JsonTsa)

// -------------------------------------------------------------------------------------------
// In this case, the TSA requires client certificate authentication.
// To provide your client certificate, the application will instantiate a Chilkat HTTP object,
// then set it up with a SSL/TLS client certificate, and then tell the XmlDSigGen object
// to use the HTTP object for connections to the TSA server.
// -------------------------------------------------------------------------------------------
loo_Http = create oleobject
li_rc = loo_Http.ConnectToNewObject("Chilkat_9_5_0.Http")

li_Success = loo_Http.SetSslClientCertPfx("/home/bob/pfxFiles/myClientSideCertWithPrivateKey.pfx","pfxPassword")
if li_Success <> 1 then
    Write-Debug loo_Http.LastErrorText
    destroy loo_SbXml
    destroy loo_Gen
    destroy loo_Object1
    destroy loo_Cert
    destroy loo_JsonTsa
    destroy loo_Http
    return
end if

// Tell the XmlDSigGen object to use the above HTTP object for TSA communications.
loo_Gen.SetHttpObj(loo_Http)

// Sign the XML...
li_Success = loo_Gen.CreateXmlDSigSb(loo_SbXml)
if li_Success <> 1 then
    Write-Debug loo_Gen.LastErrorText
    destroy loo_SbXml
    destroy loo_Gen
    destroy loo_Object1
    destroy loo_Cert
    destroy loo_JsonTsa
    destroy loo_Http
    return
end if

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

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

Write-Debug loo_SbXml.GetAsString()


destroy loo_SbXml
destroy loo_Gen
destroy loo_Object1
destroy loo_Cert
destroy loo_JsonTsa
destroy loo_Http