<?php

namespace Libs;

/**
 * Nonce - DuckBrain
 *
 * Simple class to create and verify nonces.
 *
 * @author KJ
 * @website https://kj2.me
 * @license MIT
 */
class Nonce
{
    /**
     * Returns a nonce code.
     *
     * @param string $passphrase
     *
     * @return string
     */
    public static function get(string $passphrase = ''): string
    {
        return bin2hex(
            openssl_encrypt(
                time(),
                'aes-128-ecb',
                $passphrase,
                OPENSSL_RAW_DATA
            )
        );
    }

    /**
     * Verifies a nonce code.
     *
     * @param string $nonce
     * @param string $passphrase
     *
     * @return bool
     */
    public static function check(string $nonce, string $passphrase = ''): bool
    {
        $decripted = openssl_decrypt(
            hex2bin($nonce),
            'aes-128-ecb',
            $passphrase,
            OPENSSL_RAW_DATA
        );
        return $decripted > (time() - 1800);
    }
}