PHP

Change Password for Java KeyStore File

See more Java KeyStore (JKS) Examples

Demonstrates how to load a Java keystore, change the password, and save using the new password. If the Java keystore contains only trusted root certificates, then it's simply a matter of loading the JKS with the existing password, and then saving with a new password. If the JKS contains private key entries, then each private key entry must be re-keyed using the new password by calling the ChangePassword method. Chilkat2 PHP

<?php

use Chilkat2\JavaKeyStore;

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

$jks = new JavaKeyStore();

$oldJksPassword = 'existingPassword';
$newJksPassword = 'newPassword';
$jksPath = '/someDir/keyStore.jks';

// Load the Java keystore from a file.
try {
    $jks->LoadFile($oldJksPassword, $jksPath);
} catch (\Chilkat2\Exception $e) {
    echo $e->getMessage(), "\n";
    exit;
}

// If the JKS contains private key entries, then each
// must be re-keyed with the new password by calling ChangePassword.
$numPrivateKeys = $jks->NumPrivateKeys;

$i = 0;
while ($i < $numPrivateKeys) {
    try {
        $jks->ChangePassword($i, $oldJksPassword, $newJksPassword);
    } catch (\Chilkat2\Exception $e) {
        echo $e->getMessage(), "\n";
        exit;
    }

    $i = $i + 1;
}

// Write the JKS using the new password for the JKS file's keyed digest.
try {
    $jks->ToFile($newJksPassword, $jksPath);
} catch (\Chilkat2\Exception $e) {
    echo $e->getMessage(), "\n";
    exit;
}

echo "Updated the password for the Java keystore file.\n";