(Perl) 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 Perl Downloads Perl Module for Windows, MacOS, Linux, Alpine Linux, Solaris

use chilkat();

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

$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.)
$sbXml = chilkat::CkStringBuilder->new();
$success = $sbXml->LoadFile("xmlToSign.xml","utf-8");

$gen = chilkat::CkXmlDSigGen->new();

$gen->put_SigLocation("TransakcniLogSystemu");
$gen->put_SigLocationMod(0);
$gen->put_SigId("SignatureID-Signature1");
$gen->put_SigNamespacePrefix("ds");
$gen->put_SigNamespaceUri("http://www.w3.org/2000/09/xmldsig#");
$gen->put_SignedInfoCanonAlg("C14N");
$gen->put_SignedInfoDigestMethod("sha256");

# Set the KeyInfoId before adding references..
$gen->put_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.

$object1 = chilkat::CkXml->new();
$object1->put_Tag("xades:QualifyingProperties");
$object1->AddAttribute("xmlns:xades","http://uri.etsi.org/01903/v1.3.2#");
$object1->AddAttribute("Target","#Signature1");

$object1->UpdateAttrAt("xades:SignedProperties",1,"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",1,"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",1,"Id","signature-timestamp-5561-8212-3316-5191");
$object1->UpdateAttrAt("xades:UnsignedProperties|xades:UnsignedSignatureProperties|xades:SignatureTimeStamp|ds:CanonicalizationMethod",1,"Algorithm","http://www.w3.org/2001/10/xml-exc-c14n#");
$object1->UpdateAttrAt("xades:UnsignedProperties|xades:UnsignedSignatureProperties|xades:SignatureTimeStamp|xades:EncapsulatedTimeStamp",1,"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::CkCert->new();
$success = $cert->LoadPfxFile("qa_data/pfx/cert_test123.pfx","test123");
if ($success != 1) {
    print $cert->lastErrorText() . "\r\n";
    exit;
}

$gen->SetX509Cert($cert,1);

$gen->put_KeyInfoType("X509Data");
$gen->put_X509Type("Certificate");

$gen->put_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:
# -------------------------------------------------------------------------------------------

$jsonTsa = chilkat::CkJsonObject->new();
$jsonTsa->UpdateString("timestampToken.tsaUrl","https://www3.postsignum.cz/TSS/TSS_crt/");
$jsonTsa->UpdateBool("timestampToken.requestTsaCert",1);
$gen->SetTsa($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::CkHttp->new();
$success = $http->SetSslClientCertPfx("/home/bob/pfxFiles/myClientSideCertWithPrivateKey.pfx","pfxPassword");
if ($success != 1) {
    print $http->lastErrorText() . "\r\n";
    exit;
}

# 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 != 1) {
    print $gen->lastErrorText() . "\r\n";
    exit;
}

# -----------------------------------------------

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

print $sbXml->getAsString() . "\r\n";