(PHP ActiveX) 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 ActiveX Downloads ActiveX for 32-bit and 64-bit Windows Note: The php_com_dotnet.dll may need to be enabled inside of php.ini.

<?php

// 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.)
// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.StringBuilder')
$sbXml = new COM("Chilkat.StringBuilder");
$success = $sbXml->LoadFile('xmlToSign.xml','utf-8');

// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.XmlDSigGen')
$gen = new COM("Chilkat.XmlDSigGen");

$gen->SigLocation = 'TransakcniLogSystemu';
$gen->SigLocationMod = 0;
$gen->SigId = 'SignatureID-Signature1';
$gen->SigNamespacePrefix = 'ds';
$gen->SigNamespaceUri = 'http://www.w3.org/2000/09/xmldsig#';
$gen->SignedInfoCanonAlg = 'C14N';
$gen->SignedInfoDigestMethod = 'sha256';

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

// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.Xml')
$object1 = new COM("Chilkat.Xml");
$object1->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)
// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.Cert')
$cert = new COM("Chilkat.Cert");
$success = $cert->LoadPfxFile('qa_data/pfx/cert_test123.pfx','test123');
if ($success != 1) {
    print $cert->LastErrorText . "\n";
    exit;
}

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

$gen->KeyInfoType = 'X509Data';
$gen->X509Type = 'Certificate';

$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:
// -------------------------------------------------------------------------------------------

// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.JsonObject')
$jsonTsa = new COM("Chilkat.JsonObject");
$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.
// -------------------------------------------------------------------------------------------
// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.Http')
$http = new COM("Chilkat.Http");
$success = $http->SetSslClientCertPfx('/home/bob/pfxFiles/myClientSideCertWithPrivateKey.pfx','pfxPassword');
if ($success != 1) {
    print $http->LastErrorText . "\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 . "\n";
    exit;
}

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

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

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

?>