#pragma once

#include <stdint.h>

class Des
{
private:
  /* data */
public:
  // uint8_t deskey[8] = {90, 114, 90, 107, 85, 97, 86, 103}; //{ "ZrZkUaVg" };
  // uint8_t deskey[8] = {90, 114, 90, 104, 68, 85, 97, 86}; //{ "ZrZhDUaV" };
  uint8_t DES_Encrypt_key[8];
  uint8_t DES_Decrypt_key[8];
  uint8_t sub_keys[16][8]; //sub_keys[16][8]
  uint8_t main_key[8];
  void des(uint8_t *, uint8_t *, uint8_t, uint8_t *);
  void FLASH_Read_KEYS(uint8_t key_index);
  void transpose(uint8_t *, uint8_t *, const uint8_t *, uint8_t);
  void rotate_l(uint8_t *);
  void compute_subkeys(uint8_t *);
  void f(uint8_t *, uint8_t *, uint8_t *);
};