(PHP Extension) Convert CRL PEM to XML

Loads a CRL (Certificate Revocation List) from the PEM file format and converts to XML to allow for visual examination and parsing.

Note: This example requires Chilkat v9.5.0.77 or greater.

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<?php

// The version number (9_5_0) should match version of the Chilkat extension used, omitting the micro-version number.
// For example, if using Chilkat v9.5.0.48, then include as shown here:
include("chilkat_9_5_0.php");

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

// This example requires Chilkat v9.5.0.77 or greater.
$pem = new CkPem();

$pem->put_VerboseLogging(true);
$success = $pem->LoadPemFile('qa_data/crl/sampleCrl.pem','password_not_used');
if ($success != true) {
    print $pem->lastErrorText() . "\n";
    exit;
}

$numCrls = $pem->get_NumCrls();
$i = 0;

$asn = new CkAsn();
$xml = new CkXml();
while ($i < $numCrls) {

    // Get the CRL as base64 (multi-line)
    $crlBase64 = $pem->getEncodedItem('crl','','base64_mime',$i);
    if ($pem->get_LastMethodSuccess() != true) {
        print $pem->lastErrorText() . "\n";
        exit;
    }

    print $crlBase64 . "\n";

    $success = $asn->LoadEncoded($crlBase64,'base64');
    if ($success != true) {
        print $asn->lastErrorText() . "\n";
        exit;
    }

    // Convert ASN.1 to XML and load into xml and re-emit for pretty printing..
    $xml->LoadXml($asn->asnToXml());
    print $xml->getXml() . "\n";

    // Use this online tool to generate parsing code from CRL XML: 
    // Generate Parsing Code from XML

    print '-------------------------------------' . "\n";
    $i = $i + 1;
}


?>