<?php

/**
 * Class HpsEncryptionData
 */
class HpsEncryptionData
{
    /** @var string|null **/
    public $version              = null;

    /**
     * This is required in certain encryption versions when supplying
     * track data and indicates which track has been supplied.
     *
     * @var string|null
     **/
    public $encryptedTrackNumber = null;

    /**
     * This is requied in certain encryption versions;
     * the Key Transmission Block (KTB) used at the point of sale.
     *
     * @var string|null
     **/
    public $ktb                  = null;

    /** 
     * This is required in certain encryption versions;
     * the Key Serial Number (KSN) used at the point of sale.
     *
     * @var string|null
     **/
    public $ksn                  = null;
}
