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(Lianja) 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/

Chilkat Lianja Extension Download

Chilkat Lianja Extension

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

llSuccess = .T.

// 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.)
loSbXml = createobject("CkStringBuilder")
llSuccess = loSbXml.LoadFile("xmlToSign.xml","utf-8")

loGen = createobject("CkXmlDSigGen")

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

// Set the KeyInfoId before adding references..
loGen.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.

loObject1 = createobject("CkXml")
loObject1.Tag = "xades:QualifyingProperties"
loObject1.AddAttribute("Target","#Signature1")

loObject1.UpdateAttrAt("xades:SignedProperties",.T.,"Id","SignedProperties-Signature-Signature1")
loObject1.UpdateChildContent("xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningTime","TO BE GENERATED BY CHILKAT")
loObject1.UpdateAttrAt("xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert|xades:CertDigest|ds:DigestMethod",.T.,"Algorithm","http://www.w3.org/2001/04/xmlenc#sha256")
loObject1.UpdateChildContent("xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert|xades:CertDigest|ds:DigestValue","TO BE GENERATED BY CHILKAT")
loObject1.UpdateChildContent("xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert|xades:IssuerSerial|ds:X509IssuerName","TO BE GENERATED BY CHILKAT")
loObject1.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.
loObject1.UpdateAttrAt("xades:UnsignedProperties|xades:UnsignedSignatureProperties|xades:SignatureTimeStamp",.T.,"Id","signature-timestamp-5561-8212-3316-5191")
loObject1.UpdateAttrAt("xades:UnsignedProperties|xades:UnsignedSignatureProperties|xades:SignatureTimeStamp|ds:CanonicalizationMethod",.T.,"Algorithm","http://www.w3.org/2001/10/xml-exc-c14n#")
loObject1.UpdateAttrAt("xades:UnsignedProperties|xades:UnsignedSignatureProperties|xades:SignatureTimeStamp|xades:EncapsulatedTimeStamp",.T.,"Encoding","http://uri.etsi.org/01903/v1.2.2#DER")
loObject1.UpdateChildContent("xades:UnsignedProperties|xades:UnsignedSignatureProperties|xades:SignatureTimeStamp|xades:EncapsulatedTimeStamp","TO BE GENERATED BY CHILKAT")

loGen.AddObject("XadesObjectId-Signature1",loObject1.GetXml(),"","")

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

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

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

// 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 loSbXml
    release loGen
    release loObject1
    release loCert
    return
endif

loGen.SetX509Cert(loCert,.T.)

loGen.KeyInfoType = "X509Data"
loGen.X509Type = "Certificate"

loGen.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:
// -------------------------------------------------------------------------------------------

loJsonTsa = createobject("CkJsonObject")
loJsonTsa.UpdateString("timestampToken.tsaUrl","https://www3.postsignum.cz/TSS/TSS_crt/")
loJsonTsa.UpdateBool("timestampToken.requestTsaCert",.T.)
loGen.SetTsa(loJsonTsa)

// -------------------------------------------------------------------------------------------
// 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.
// -------------------------------------------------------------------------------------------
loHttp = createobject("CkHttp")
llSuccess = loHttp.SetSslClientCertPfx("/home/bob/pfxFiles/myClientSideCertWithPrivateKey.pfx","pfxPassword")
if (llSuccess <> .T.) then
    ? loHttp.LastErrorText
    release loSbXml
    release loGen
    release loObject1
    release loCert
    release loJsonTsa
    release loHttp
    return
endif

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

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

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

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

? loSbXml.GetAsString()


release loSbXml
release loGen
release loObject1
release loCert
release loJsonTsa
release loHttp

 

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