include/em4x70.h

   1 //-----------------------------------------------------------------------------
   2 // Copyright (C) Proxmark3 contributors. See AUTHORS.md for details.
   3 //
   4 // This program is free software: you can redistribute it and/or modify
   5 // it under the terms of the GNU General Public License as published by
   6 // the Free Software Foundation, either version 3 of the License, or
   7 // (at your option) any later version.
   8 //
   9 // This program is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13 //
  14 // See LICENSE.txt for the text of the license.
  15 //-----------------------------------------------------------------------------
  16 // Low frequency EM4x70 structs -- common to both ARM firmware and client
  17 //-----------------------------------------------------------------------------
  18
  19 #ifndef EM4X70_H__
  20 #define EM4X70_H__
  21
  22 #include <stdint.h>
  23 #include <stdbool.h>
  24
  25 #define EM4X70_NUM_BLOCKS 16
  26
  27 // Common word/block addresses
  28 #define EM4X70_PIN_WORD_LOWER 10
  29 #define EM4X70_PIN_WORD_UPPER 11
  30
  31 typedef struct {
  32     // ISSUE: `bool` type does not have a standard-defined size.
  33     //        therefore, compatibility between architectures /
  34     //        compilers is not guaranteed.
  35     // ISSUE: C99 has no _Static_assert() ... was added in C11
  36     // TODO: add _Static_assert(sizeof(bool)==1);
  37     // TODO: add _Static_assert(sizeof(em4x70_data_t)==36);
  38     bool parity;
  39
  40     // Used for writing address
  41     uint8_t address;
  42     // ISSUE: Presumes target is little-endian
  43     uint16_t word;
  44
  45     // PIN to unlock
  46     uint32_t pin;
  47
  48     // Used for authentication
  49     uint8_t frnd[4];
  50     uint8_t grnd[3];
  51     uint8_t rnd[7];
  52
  53     // Used to write new key
  54     uint8_t crypt_key[12];
  55
  56     // used for bruteforce the partial key
  57     // ISSUE: Presumes target is little-endian
  58     uint16_t start_key;
  59
  60 } em4x70_data_t;
  61
  62 #endif /* EM4X70_H__ */