ahbanavi

<?php
const PASSPHRASE = ''; // use 'openssl rand -hex 32' to generate key, same with python

function encrypt(array $data): string
{
    $data_json_64 = base64_encode(json_encode($data));
    $secret_key = hex2bin(PASSPHRASE);
    $iv = openssl_random_pseudo_bytes(openssl_cipher_iv_length('aes-256-gcm'));
    $tag = '';
    $encrypted_64 = openssl_encrypt($data_json_64, 'aes-256-gcm', $secret_key, 0, $iv, $tag);