(PHP Extension) Iterate Keys and Certs in PEM

Demonstrates how to access each of the private keys and certs contained within a PEM.

Chilkat PHP Downloads PHP Extension for Windows, Linux, MacOS, Alpine Linux, Solaris

<?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");

// Starting in v9.5.0.49, all Chilkat classes can be unlocked at once at the beginning of a program
// by calling UnlockBundle.  It requires a Bundle unlock code.
$chilkatGlob = new CkGlobal();
$success = $chilkatGlob->UnlockBundle('Anything for 30-day trial.');
if ($success != true) {
    print $chilkatGlob->lastErrorText() . "\n";
    exit;
}

// The Chilkat PEM class was introduced in v9.5.0.49.  
// It requires the bundle to be unlocked, as shown above.
$pem = new CkPem();

// Load the PEM from a file.
// If the PEM is encrypted, provide a password.  Otherwise pass an empty string for the password.
$password = 'myPassword';
$success = $pem->LoadPemFile('../myPemFiles/myPem.pem',$password);
if ($success != true) {
    print $pem->lastErrorText() . "\n";
    exit;
}

// Note: If the app already has the PEM pre-loaded in a string variable, then load it 
// by calling LoadPem instead.  
$pemContent = '... the PEM contents ...';
$success = $pem->LoadPem($pemContent,$password);
// Check for success as before..

// Iterate over the private keys.
$numPrivateKeys = $pem->get_NumPrivateKeys();
$i = 0;

while ($i < $numPrivateKeys) {

    // privKey is a CkPrivateKey
    $privKey = $pem->GetPrivateKey($i);
    print 'Private Key ' . $i . ' is ' . $privKey->get_BitLength() . ' in length' . "\n";

    $i = $i + 1;
}

// Iterate over the certificates.
$numCerts = $pem->get_NumCerts();
$i = 0;

while ($i < $numCerts) {

    // cert is a CkCert
    $cert = $pem->GetCert($i);
    print 'Certificate ' . $i . ' : ' . $cert->subjectDN() . "\n";

    $i = $i + 1;
}


?>