(PHP Extension) Convert Java KeyStore to PEM

Loads a Java keystore file and saves the trusted certificate entries to a PEM file.

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");

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

$jks = new CkJavaKeyStore();

$jksPassword = 'myJksPassword';

// Load the Java keystore from a file.  The JKS file password is used
// to verify the keyed digest that is found at the very end of the keystore.
// It verifies that the keystore has not been modified.
$success = $jks->LoadFile($jksPassword,'/someDir/keyStore.jks');
if ($success != true) {
    print $jks->lastErrorText() . "\n";
    exit;
}

// Open/create the output PEM file. 
// This example uses Chilkat's file access class for writing the output file.
// You may replace the file I/O lines of code with whatever is most convenient for you.
$fac = new CkFileAccess();
$success = $fac->OpenForWrite('/pemFiles/caCerts.pem');
if ($success != true) {
    print $fac->lastErrorText() . "\n";
    exit;
}

$numCerts = $jks->get_NumTrustedCerts();

// Iterate over the trusted certs, get the PEM for each,
// and append it to the output file.
$i = 0;
while ($i < $numCerts) {
    // cert is a CkCert
    $cert = $jks->GetTrustedCert($i);

    // Get the certificate in PEM format.  
    $pem = $cert->exportCertPem();

    // Append the PEM string to the open file.
    // The PEM contains only us-ascii chars..
    $success = $fac->AppendAnsi($pem);
    if ($success != true) {
        print $fac->lastErrorText() . "\n";

        exit;
    }

    $i = $i + 1;
}

// Close the output file.
$fac->FileClose();

print 'Trusted certificates saved to PEM.' . "\n";

?>