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<?php
namespace Puyo\Security\Csrf\Strategy;
/**
 * セッションID + microtime() のSHA-256。(ワンタイム)
 *
 * 強度に問題があると考える場合は別のものを使うこと。
 * @package Puyo\Security\Csrf\Strategy
 */
class SessionIdMicroTime extends SessionIdAbstract
{
    public function __construct() {
        parent::__construct();
    }
    /**
     * @return string
     */
    public function createToken() {
        return hash('sha256', session_id() . microtime());
    }
}