How do I sign and verify images for Postmortems?

Signing and verifying images for Postmortems is essential to ensure integrity and authenticity. This process helps in maintaining accurate records of incidents and the images related to them.


        <?php
        // Example of image signing
        function signImage($imagePath, $privateKey) {
            $imageData = file_get_contents($imagePath);
            $signature = '';
            openssl_sign($imageData, $signature, $privateKey);
            return base64_encode($signature);
        }

        // Example of image verification
        function verifyImage($imagePath, $signature, $publicKey) {
            $imageData = file_get_contents($imagePath);
            return openssl_verify($imageData, base64_decode($signature), $publicKey) === 1;
        }
        ?>