PHP Extension Requires Chilkat v11.0.0+

Create XML Signature using Java KeyStore (.jks)

See more XML Digital Signatures Examples

Demonstrates how to create an XML digital signature using a certificate and private key from a Java KeyStore (.jks) PHP Extension

<?php

include("chilkat.php");

$success = false;

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

//  The SOAP XML to be signed in this example contains the following:

//  <?xml version="1.0" encoding="UTF-8" standalone="no" ?>
//  <SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/">
//      <SOAP-ENV:Header>
//          <wsse:Security xmlns:wsse="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd" SOAP-ENV:mustUnderstand="1"></wsse:Security>
//      </SOAP-ENV:Header>
//      <SOAP-ENV:Body xmlns:SOAP-SEC="http://schemas.xmlsoap.org/soap/security/2000-12" SOAP-SEC:id="Body">
//          <z:FooBar xmlns:z="http://example.com" />
//      </SOAP-ENV:Body>
//  </SOAP-ENV:Envelope>
//  

//  Build the XML to sign.
//  Use this online tool to generate the code from sample XML: 
//  Generate Code to Create XML

$xml = new CkXml();
$xml->put_Tag('SOAP-ENV:Envelope');
$xml->AddAttribute('xmlns:SOAP-ENV','http://schemas.xmlsoap.org/soap/envelope/');
$xml->UpdateAttrAt('SOAP-ENV:Header|wsse:Security',true,'xmlns:wsse','http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd');
$xml->UpdateAttrAt('SOAP-ENV:Header|wsse:Security',true,'SOAP-ENV:mustUnderstand','1');
$xml->UpdateAttrAt('SOAP-ENV:Body',true,'xmlns:SOAP-SEC','http://schemas.xmlsoap.org/soap/security/2000-12');
$xml->UpdateAttrAt('SOAP-ENV:Body',true,'SOAP-SEC:id','Body');
$xml->UpdateAttrAt('SOAP-ENV:Body|z:FooBar',true,'xmlns:z','http://example.com');

//  Load a JavaKeyStore file containing the certificate + private key.
$jks = new CkJavaKeyStore();
$password = 'secret';
$success = $jks->LoadFile($password,'qa_data/jks/test_secret.jks');
if ($success == false) {
    print $jks->lastErrorText() . "\n";
    exit;
}

//  Make sure we have a private key.
if ($jks->get_NumPrivateKeys() < 1) {
    print 'No private key available.' . "\n";
    exit;
}

//  -------------------------------------------------------------------------
//  Get the certificate chain associated with the 1st (and probably only) private key in the JKS.

$chain = new CkCertChain();
$success = $jks->CertChainAt(0,$chain);
if ($success == false) {
    print $jks->lastErrorText() . "\n";
    exit;
}

$cert = new CkCert();
$success = $chain->CertAt(0,$cert);
if ($success == false) {
    print $chain->lastErrorText() . "\n";
    exit;
}

//  Verify again that this cert has a private key.
if ($cert->HasPrivateKey() != true) {
    print 'Certificate has no associated private key.' . "\n";
    exit;
}

//  Prepare for signing...
//  Use this online tool to generate the following code from an already-signed XML sample: 
//  Generate Code to Create an XML Signature
$gen = new CkXmlDSigGen();

//  Indicate where the Signature will be inserted.
$gen->put_SigLocation('SOAP-ENV:Envelope|SOAP-ENV:Header|wsse:Security');

//  Add a reference to the fragment of the XML to be signed.
$gen->AddSameDocRef('Body','sha1','EXCL_C14N','','');

//  (You can read about the SignedInfoPrefixList in the online reference documentation.  It's optional..)
$gen->put_SignedInfoPrefixList('wsse SOAP-ENV');

//  Provide the private key for signing via the certificate, and indicate that
//  we want the base64 of the certificate embedded in the KeyInfo.
$gen->put_KeyInfoType('X509Data');
$gen->put_X509Type('Certificate');

//  Note: Because our certificate was loaded from a JKS which also contained the private key,
//  Chilkat automatically knows and has the private key associated with the certificate.
//  We set bUsePrivateKey to tell the SetX509Cert method to automatically use the private key
//  associated with the certificate for signing.
$bUsePrivateKey = true;
$success = $gen->SetX509Cert($cert,$bUsePrivateKey);
if ($success != true) {
    print $gen->lastErrorText() . "\n";
    exit;
}

//  Everything's specified.  Now create and insert the Signature
$sbXml = new CkStringBuilder();
$xml->GetXmlSb($sbXml);
$success = $gen->CreateXmlDSigSb($sbXml);
if ($success == false) {
    print $gen->lastErrorText() . "\n";
    exit;
}

//  Examine the XML with the digital signature inserted
print $sbXml->getAsString() . "\n";

?>