Files
ChameleonUltra/software/src/HardnestedRecovery/parity.h
T
Foxushka cf00761902 Key recovery via backdoor for static encrypted nonce cards (#263)
* Implement MF1_ENC_NESTED_ACQUIRE in firmware

* Implement MF1_ENC_NESTED_ACQUIRE in software + fix code formatter

* Remove xz and pthreads from sources, use CMake FetchContent

* Update changelog

* lzma.h

* Update CMakeLists.txt

* Update CMakeLists.txt

* Probably fix workflow taking wrong commit for building

* Fix CMake building tools into bin/Debug on Windows

* Added cmd for fetching all slots nicks (without 16 commands)

* Fix type and use temp directory instead cwd (https://github.com/RfidResearchGroup/ChameleonUltra/pull/261)

* Fix endian for mfu_read_emu_counter_data and mfu_write_emu_counter_data

* Fix  --key interpreted as list
2025-08-01 22:12:07 +02:00

113 lines
3.3 KiB
C
Executable File

//-----------------------------------------------------------------------------
// Copyright (C) Proxmark3 contributors. See AUTHORS.md for details.
//
// 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.
//-----------------------------------------------------------------------------
// Parity functions
//-----------------------------------------------------------------------------
// all functions defined in header file by purpose. Allows compiler optimizations.
#include <string.h>
#ifndef __PARITY_H
#define __PARITY_H
#define _CRT_NONSTDC_NO_WARNINGS
#define _CRT_SECURE_NO_WARNINGS
#define _CRT_NON_CONFORMING_SWPRINTFS
#define restrict __restrict
#define inline __inline
#include <stdio.h>
#include <stdint.h>
static const uint8_t g_odd_byte_parity[256] = {
1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 0, 1,
0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0,
0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0,
1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 0, 1,
0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0,
1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 0, 1,
1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 0, 1,
0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0,
0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0,
1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 0, 1,
1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 0, 1,
0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0,
1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 0, 1,
0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0,
0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0,
1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 0, 1
};
#define ODD_PARITY8(x) (g_odd_byte_parity[x])
#define EVEN_PARITY8(x) (!g_odd_byte_parity[x])
static inline uint8_t oddparity8(const uint8_t x) {
return g_odd_byte_parity[x];
}
static inline uint8_t evenparity8(const uint8_t x) {
return !g_odd_byte_parity[x];
}
static inline uint8_t evenparity16(uint16_t x) {
#if !defined __GNUC__
x ^= x >> 8;
return EVEN_PARITY8(x);
#else
return (__builtin_parity(x) & 0xFF);
#endif
}
static inline uint8_t oddparity16(uint16_t x) {
#if !defined __GNUC__
x ^= x >> 8;
return ODD_PARITY8(x);
#else
return !__builtin_parity(x);
#endif
}
static inline uint8_t evenparity32(uint32_t x) {
#if _MSC_VER
x ^= x >> 16;
x ^= x >> 8;
x ^= x >> 4;
x &= 0xf;
return (0x6996 >> x) & 1;
#elif !defined __GNUC__
x ^= x >> 16;
x ^= x >> 8;
return EVEN_PARITY8(x);
#else
return (__builtin_parity(x) & 0xFF);
#endif
}
static inline uint8_t oddparity32(uint32_t x) {
#if _MSC_VER
x ^= x >> 16;
x ^= x >> 8;
x ^= x >> 4;
x &= 0xf;
return ((0x6996 >> x) & 1) ^ 1;
#elif !defined __GNUC__
x ^= x >> 16;
x ^= x >> 8;
return ODD_PARITY8(x);
#else
return !__builtin_parity(x);
#endif
}
#endif /* __PARITY_H */