proxmark3/include/em4x70.h

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//-----------------------------------------------------------------------------
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// Copyright (C) Proxmark3 contributors. See AUTHORS.md for details.
//
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// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// See LICENSE.txt for the text of the license.
//-----------------------------------------------------------------------------
// Low frequency EM4x70 structs -- common to both ARM firmware and client
//-----------------------------------------------------------------------------
#ifndef EM4X70_H__
#define EM4X70_H__
#include <stdint.h>
#include <stdbool.h>
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#define EM4X70_NUM_BLOCKS 16
// Common word/block addresses
#define EM4X70_PIN_WORD_LOWER 10
#define EM4X70_PIN_WORD_UPPER 11
typedef struct {
// ISSUE: `bool` type does not have a standard-defined size.
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// therefore, compatibility between architectures /
// compilers is not guaranteed.
// ISSUE: C99 has no _Static_assert() ... was added in C11
// TODO: add _Static_assert(sizeof(bool)==1);
// TODO: add _Static_assert(sizeof(em4x70_data_t)==36);
bool parity;
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// Used for writing address
uint8_t address;
// ISSUE: Presumes target is little-endian
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uint16_t word;
// PIN to unlock
uint32_t pin;
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// Used for authentication
uint8_t frnd[4];
uint8_t grnd[3];
uint8_t rnd[7];
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// Used to write new key
uint8_t crypt_key[12];
// used for bruteforce the partial key
// ISSUE: Presumes target is little-endian
uint16_t start_key;
} em4x70_data_t;
#endif /* EM4X70_H__ */