Sample code for 30+ languages & platforms
PHP ActiveX

XML-DSig Add Reference with Transforms Specified Explicitly

Demonstrates how to use the new AddSameDocRef2 method to explicitly specify the XML Transforms fragment.

Chilkat PHP ActiveX Downloads

Download Chilkat for PHP ActiveX
PHP ActiveX 
<?php

$success = 0;

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

$success = 1;

// Create the following XML to be signed:

// <doc>
//     <s id="s1">Some text...</s>
//     <p>Some text...</p>
//     <p class="note">A note...</p>
// </doc>

// Use this online tool to generate code from sample XML: 
// Generate Code to Create XML

$xmlToSign = new COM("Chilkat.Xml");
$xmlToSign->Tag = 'doc';
$xmlToSign->UpdateAttrAt('s',1,'id','s1');
$xmlToSign->UpdateChildContent('s','Some text...');
$xmlToSign->UpdateChildContent('p','Some text...');
$xmlToSign->UpdateAttrAt('p[1]',1,'class','note');
$xmlToSign->UpdateChildContent('p[1]','A note...');

print $xmlToSign->getXml() . "\n";

$gen = new COM("Chilkat.XmlDSigGen");

$gen->SigLocation = 'doc';
$gen->SigLocationMod = 0;
$gen->SigId = 'Signature-78f29839-06af-448f-b479-ca46457fab1b-Signature';
$gen->SigNamespacePrefix = 'ds';
$gen->SigNamespaceUri = 'http://www.w3.org/2000/09/xmldsig#';
$gen->SigValueId = 'Signature-78f29839-06af-448f-b479-ca46457fab1b-SignatureValue';
$gen->SignedInfoCanonAlg = 'C14N';
$gen->SignedInfoDigestMethod = 'sha1';

// Set the KeyInfoId before adding references..
$gen->KeyInfoId = 'Signature-78f29839-06af-448f-b479-ca46457fab1b-KeyInfo';

// The following XML to be added as an Object to the Signature

// Use this online tool to generate code from sample XML: 
// Generate Code to Create XML

// <xades:QualifyingProperties Id="Signature-78f29839-06af-448f-b479-ca46457fab1b-QualifyingProperties" Target="#Signature-78f29839-06af-448f-b479-ca46457fab1b-Signature" xmlns:ds="http://www.w3.org/2000/09/xmldsig#" xmlns:xades="http://uri.etsi.org/01903/v1.3.2#">
//     <xades:SignedProperties Id="Signature-78f29839-06af-448f-b479-ca46457fab1b-SignedProperties">
//         <xades:SignedSignatureProperties>
//             <xades:SigningTime>TO BE GENERATED BY CHILKAT</xades:SigningTime>
//             <xades:SigningCertificate>
//                 <xades:Cert>
//                     <xades:CertDigest>
//                         <ds:DigestMethod Algorithm="http://www.w3.org/2000/09/xmldsig#sha1"/>
//                         <ds:DigestValue>TO BE GENERATED BY CHILKAT</ds:DigestValue>
//                     </xades:CertDigest>
//                     <xades:IssuerSerial>
//                         <ds:X509IssuerName>TO BE GENERATED BY CHILKAT</ds:X509IssuerName>
//                         <ds:X509SerialNumber>TO BE GENERATED BY CHILKAT</ds:X509SerialNumber>
//                     </xades:IssuerSerial>
//                 </xades:Cert>
//             </xades:SigningCertificate>
//         </xades:SignedSignatureProperties>
//         <xades:SignedDataObjectProperties>
//             <xades:DataObjectFormat ObjectReference="#Reference-24eb6003-d41c-442c-a731-d4c58f94790b">
//                 <xades:Description/>
//                 <xades:ObjectIdentifier>
//                     <xades:Identifier Qualifier="OIDAsURN">urn:oid:1.2.840.10003.5.109.10</xades:Identifier>
//                     <xades:Description/>
//                 </xades:ObjectIdentifier>
//                 <xades:MimeType>text/xml</xades:MimeType>
//                 <xades:Encoding/>
//             </xades:DataObjectFormat>
//         </xades:SignedDataObjectProperties>
//     </xades:SignedProperties>
// </xades:QualifyingProperties>

$object1 = new COM("Chilkat.Xml");
$object1->Tag = 'xades:QualifyingProperties';
$object1->AddAttribute('Id','Signature-78f29839-06af-448f-b479-ca46457fab1b-QualifyingProperties');
$object1->AddAttribute('Target','#Signature-78f29839-06af-448f-b479-ca46457fab1b-Signature');
$object1->AddAttribute('xmlns:ds','http://www.w3.org/2000/09/xmldsig#');
$object1->AddAttribute('xmlns:xades','http://uri.etsi.org/01903/v1.3.2#');
$object1->UpdateAttrAt('xades:SignedProperties',1,'Id','Signature-78f29839-06af-448f-b479-ca46457fab1b-SignedProperties');
$object1->UpdateChildContent('xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningTime','TO BE GENERATED BY CHILKAT');
// Note: It may be that http://www.w3.org/2001/04/xmlenc#sha256 is needed in the following line instead of http://www.w3.org/2000/09/xmldsig#sha1
$object1->UpdateAttrAt('xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificateV2|xades:Cert|xades:CertDigest|ds:DigestMethod',1,'Algorithm','http://www.w3.org/2000/09/xmldsig#sha1');
$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');
$object1->UpdateAttrAt('xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat',1,'ObjectReference','#Reference-24eb6003-d41c-442c-a731-d4c58f94790b');
$object1->UpdateChildContent('xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat|xades:Description','');
$object1->UpdateAttrAt('xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat|xades:ObjectIdentifier|xades:Identifier',1,'Qualifier','OIDAsURN');
$object1->UpdateChildContent('xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat|xades:ObjectIdentifier|xades:Identifier','urn:oid:1.2.840.10003.5.109.10');
$object1->UpdateChildContent('xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat|xades:ObjectIdentifier|xades:Description','');
$object1->UpdateChildContent('xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat|xades:MimeType','text/xml');
$object1->UpdateChildContent('xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat|xades:Encoding','');

print $object1->getXml() . "\n";

$gen->AddObject('',$object1->getXml(),'','');

// -------- Reference 1 --------

// Create the following Transforms fragment:

// Use this online tool to generate code from sample XML: 
// Generate Code to Create XML

// <ds:Transforms>
//     <ds:Transform Algorithm="http://www.w3.org/TR/2001/REC-xml-c14n-20010315"/>
//     <ds:Transform Algorithm="http://www.w3.org/2000/09/xmldsig#enveloped-signature"/>
//     <ds:Transform Algorithm="http://www.w3.org/TR/1999/REC-xpath-19991116">
//         <ds:XPath xmlns:ds="http://www.w3.org/2000/09/xmldsig#">not(ancestor-or-self::ds:Signature)</ds:XPath>
//     </ds:Transform>
// </ds:Transforms>

$xml1 = new COM("Chilkat.Xml");
$xml1->Tag = 'ds:Transforms';
$xml1->UpdateAttrAt('ds:Transform',1,'Algorithm','http://www.w3.org/TR/2001/REC-xml-c14n-20010315');
$xml1->UpdateAttrAt('ds:Transform[1]',1,'Algorithm','http://www.w3.org/2000/09/xmldsig#enveloped-signature');
$xml1->UpdateAttrAt('ds:Transform[2]',1,'Algorithm','http://www.w3.org/TR/1999/REC-xpath-19991116');
$xml1->UpdateAttrAt('ds:Transform[2]|ds:XPath',1,'xmlns:ds','http://www.w3.org/2000/09/xmldsig#');
$xml1->UpdateChildContent('ds:Transform[2]|ds:XPath','not(ancestor-or-self::ds:Signature)');

// This is the "Transforms" XML fragment passed to AddSameDocRef2.
print $xml1->getXml() . "\n";

$gen->AddSameDocRef2('','sha1',$xml1,'');

$gen->SetRefIdAttr('','Reference-24eb6003-d41c-442c-a731-d4c58f94790b');

// -------- Reference 2 --------
$gen->AddObjectRef('Signature-78f29839-06af-448f-b479-ca46457fab1b-SignedProperties','sha1','','','http://uri.etsi.org/01903#SignedProperties');

// -------- Reference 3 --------
$gen->AddSameDocRef('Signature-78f29839-06af-448f-b479-ca46457fab1b-KeyInfo','sha1','','','');

// Provide a certificate + private key. (PFX password is test123)
$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+KeyValue';
$gen->X509Type = 'CertChain';

// Load XML to be signed...
$sbXml = new COM("Chilkat.StringBuilder");
$xmlToSign->GetXmlSb($sbXml);

$gen->Behaviors = 'IndentedSignature';

// 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('qa_output/signedXml.xml','utf-8',0);

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

// ----------------------------------------
// Verify the signatures we just produced...
$verifier = new COM("Chilkat.XmlDSig");
$success = $verifier->LoadSignatureSb($sbXml);
if ($success != 1) {
    print $verifier->LastErrorText . "\n";
    exit;
}

$numSigs = $verifier->NumSignatures;
$verifyIdx = 0;
while ($verifyIdx < $numSigs) {
    $verifier->Selector = $verifyIdx;
    $verified = $verifier->VerifySignature(1);
    if ($verified != 1) {
        print $verifier->LastErrorText . "\n";
        exit;
    }

    $verifyIdx = $verifyIdx + 1;
}

print 'All signatures were successfully verified.' . "\n";

?>