<?php
// server.php

$serverPrivateKeyFile = 'file://ca/private/server.key';
$clientCertificateFile = 'file://ca/certs/client.crt';

$context = new ZMQContext();
$socket = $context->getSocket(ZMQ::SOCKET_REP);
$socket->bind('ipc://magic.ipc');

$clientPublicKey = openssl_pkey_get_public($clientCertificateFile);
$serverPrivateKey = openssl_pkey_get_private($serverPrivateKeyFile);

$msg = unserialize($socket->recv());
$signatureCheck = openssl_verify($msg['data'], $msg['signature'], $clientPublicKey);
openssl_private_decrypt($msg['data'], $decrypted, $serverPrivateKey);
echo $signatureCheck === 1 ? 'Success' : 'Failed';
echo PHP_EOL;
print_r($decrypted);
echo PHP_EOL;