$decrypted = decrypt($encrypted, $key); echo "Decrypted: $decrypted\n"; This example illustrates basic encryption and decryption in PHP using the OpenSSL extension. A real-world application might integrate more complex features like those mentioned, especially if working with encoded scripts or verified transactions.

$encrypted = encrypt($data, $key); echo "Encrypted: $encrypted\n";

$key = "your_secret_key_32"; // Must be 32 bytes long for AES-256 $data = "My secret information";

function decrypt($encrypted, $key) { return openssl_decrypt($encrypted, 'AES-256-CBC', $key, 0, $key); }