What are the key differences between encrypting and decrypting data with AES256 in PHP and Lua?

When encrypting and decrypting data with AES256 in PHP and Lua, the key differences lie in the implementation of the AES encryption algorithm in each language. PHP has built-in functions for AES encryption, while Lua requires the use of external libraries. Additionally, the way data is handled and formatted may vary between the two languages. 

// PHP code snippet for encrypting and decrypting data with AES256

// Encrypt data
function encryptData($data, $key) {
    $cipher = "aes-256-cbc";
    $ivlen = openssl_cipher_iv_length($cipher);
    $iv = openssl_random_pseudo_bytes($ivlen);
    $encrypted = openssl_encrypt($data, $cipher, $key, 0, $iv);
    return base64_encode($iv . $encrypted);
}

// Decrypt data
function decryptData($data, $key) {
    $cipher = "aes-256-cbc";
    $ivlen = openssl_cipher_iv_length($cipher);
    $data = base64_decode($data);
    $iv = substr($data, 0, $ivlen);
    $encrypted = substr($data, $ivlen);
    return openssl_decrypt($encrypted, $cipher, $key, 0, $iv);
}

Keywords

AES256 encryption decryption PHP Lua

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