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https://github.com/RfidResearchGroup/proxmark3.git
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67 lines
2.3 KiB
C
67 lines
2.3 KiB
C
/*****************************************************************************
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* WARNING
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*
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* THIS CODE IS CREATED FOR EXPERIMENTATION AND EDUCATIONAL USE ONLY.
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*
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* USAGE OF THIS CODE IN OTHER WAYS MAY INFRINGE UPON THE INTELLECTUAL
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* PROPERTY OF OTHER PARTIES, SUCH AS INSIDE SECURE AND HID GLOBAL,
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* AND MAY EXPOSE YOU TO AN INFRINGEMENT ACTION FROM THOSE PARTIES.
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*
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* THIS CODE SHOULD NEVER BE USED TO INFRINGE PATENTS OR INTELLECTUAL PROPERTY RIGHTS.
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*
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*****************************************************************************
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*
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* This file is part of loclass. It is a reconstructon of the cipher engine
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* used in iClass, and RFID techology.
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*
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* The implementation is based on the work performed by
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* Flavio D. Garcia, Gerhard de Koning Gans, Roel Verdult and
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* Milosch Meriac in the paper "Dismantling IClass".
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*
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* Copyright (C) 2014 Martin Holst Swende
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*
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* This is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as published
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* by the Free Software Foundation, or, at your option, any later version.
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*
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* This file is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with loclass. If not, see <http://www.gnu.org/licenses/>.
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*
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*
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****************************************************************************/
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#ifndef CIPHERUTILS_H
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#define CIPHERUTILS_H
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#include <stdint.h>
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#include <stdbool.h>
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#include <stdlib.h>
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typedef struct {
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uint8_t *buffer;
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uint8_t numbits;
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uint8_t position;
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} BitstreamIn;
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typedef struct {
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uint8_t *buffer;
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uint8_t numbits;
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uint8_t position;
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} BitstreamOut;
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bool headBit(BitstreamIn *stream);
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bool tailBit(BitstreamIn *stream);
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void pushBit(BitstreamOut *stream, bool bit);
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int bitsLeft(BitstreamIn *stream);
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void push6bits(BitstreamOut *stream, uint8_t bits);
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void x_num_to_bytes(uint64_t n, size_t len, uint8_t *dest);
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uint64_t x_bytes_to_num(uint8_t *src, size_t len);
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uint8_t reversebytes(uint8_t b);
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void reverse_arraybytes(uint8_t *arr, size_t len);
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void reverse_arraycopy(uint8_t *arr, uint8_t *dest, size_t len);
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#endif // CIPHERUTILS_H
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