Go
Go
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 Go Downloads
success := false
// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.
success = true
// 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.)
sbXml := chilkat.NewStringBuilder()
success = sbXml.LoadFile("xmlToSign.xml","utf-8")
gen := chilkat.NewXmlDSigGen()
gen.SetSigLocation("TransakcniLogSystemu")
gen.SetSigLocationMod(0)
gen.SetSigId("SignatureID-Signature1")
gen.SetSigNamespacePrefix("ds")
gen.SetSigNamespaceUri("http://www.w3.org/2000/09/xmldsig#")
gen.SetSignedInfoCanonAlg("C14N")
gen.SetSignedInfoDigestMethod("sha256")
// Set the KeyInfoId before adding references..
gen.SetKeyInfoId("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.
object1 := chilkat.NewXml()
object1.SetTag("xades:QualifyingProperties")
object1.AddAttribute("xmlns:xades","http://uri.etsi.org/01903/v1.3.2#")
object1.AddAttribute("Target","#Signature1")
object1.UpdateAttrAt("xades:SignedProperties",true,"Id","SignedProperties-Signature-Signature1")
object1.UpdateChildContent("xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningTime","TO BE GENERATED BY CHILKAT")
object1.UpdateAttrAt("xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificateV2|xades:Cert|xades:CertDigest|ds:DigestMethod",true,"Algorithm","http://www.w3.org/2001/04/xmlenc#sha256")
object1.UpdateChildContent("xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificateV2|xades:Cert|xades:CertDigest|ds:DigestValue","TO BE GENERATED BY CHILKAT")
object1.UpdateChildContent("xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificateV2|xades:Cert|xades:IssuerSerialV2","TO BE GENERATED BY CHILKAT")
// The EncapsulatedTimestamp will be included in the unsigned properties.
object1.UpdateAttrAt("xades:UnsignedProperties|xades:UnsignedSignatureProperties|xades:SignatureTimeStamp",true,"Id","signature-timestamp-5561-8212-3316-5191")
object1.UpdateAttrAt("xades:UnsignedProperties|xades:UnsignedSignatureProperties|xades:SignatureTimeStamp|ds:CanonicalizationMethod",true,"Algorithm","http://www.w3.org/2001/10/xml-exc-c14n#")
object1.UpdateAttrAt("xades:UnsignedProperties|xades:UnsignedSignatureProperties|xades:SignatureTimeStamp|xades:EncapsulatedTimeStamp",true,"Encoding","http://uri.etsi.org/01903/v1.2.2#DER")
object1.UpdateChildContent("xades:UnsignedProperties|xades:UnsignedSignatureProperties|xades:SignatureTimeStamp|xades:EncapsulatedTimeStamp","TO BE GENERATED BY CHILKAT")
gen.AddObject("XadesObjectId-Signature1",*object1.GetXml(),"","")
// -------- Reference 1 --------
gen.AddObjectRef("SignedProperties-Signature-Signature1","sha256","EXCL_C14N","","http://uri.etsi.org/01903#SignedProperties")
// -------- Reference 2 --------
gen.AddSameDocRef("KeyInfoId-Signature-Signature1","sha256","EXCL_C14N","","")
gen.SetRefIdAttr("KeyInfoId-Signature-Signature1","ReferenceKeyInfo")
// -------- Reference 3 --------
gen.AddSameDocRef("","sha256","EXCL_C14N","","")
gen.SetRefIdAttr("","Reference-Signature1")
// Provide a certificate + private key. (PFX password is test123)
cert := chilkat.NewCert()
success = cert.LoadPfxFile("qa_data/pfx/cert_test123.pfx","test123")
if success != true {
fmt.Println(cert.LastErrorText())
sbXml.DisposeStringBuilder()
gen.DisposeXmlDSigGen()
object1.DisposeXml()
cert.DisposeCert()
return
}
gen.SetX509Cert(cert,true)
gen.SetKeyInfoType("X509Data")
gen.SetX509Type("Certificate")
gen.SetBehaviors("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:
// -------------------------------------------------------------------------------------------
jsonTsa := chilkat.NewJsonObject()
jsonTsa.UpdateString("timestampToken.tsaUrl","https://www3.postsignum.cz/TSS/TSS_crt/")
jsonTsa.UpdateBool("timestampToken.requestTsaCert",true)
gen.SetTsa(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.
// -------------------------------------------------------------------------------------------
http := chilkat.NewHttp()
success = http.SetSslClientCertPfx("/home/bob/pfxFiles/myClientSideCertWithPrivateKey.pfx","pfxPassword")
if success != true {
fmt.Println(http.LastErrorText())
sbXml.DisposeStringBuilder()
gen.DisposeXmlDSigGen()
object1.DisposeXml()
cert.DisposeCert()
jsonTsa.DisposeJsonObject()
http.DisposeHttp()
return
}
// Tell the XmlDSigGen object to use the above HTTP object for TSA communications.
gen.SetHttpObj(http)
// Sign the XML...
success = gen.CreateXmlDSigSb(sbXml)
if success != true {
fmt.Println(gen.LastErrorText())
sbXml.DisposeStringBuilder()
gen.DisposeXmlDSigGen()
object1.DisposeXml()
cert.DisposeCert()
jsonTsa.DisposeJsonObject()
http.DisposeHttp()
return
}
// -----------------------------------------------
// Save the signed XML to a file.
success = sbXml.WriteFile("c:/temp/qa_output/signedXml.xml","utf-8",false)
fmt.Println(*sbXml.GetAsString())
sbXml.DisposeStringBuilder()
gen.DisposeXmlDSigGen()
object1.DisposeXml()
cert.DisposeCert()
jsonTsa.DisposeJsonObject()
http.DisposeHttp()