DESFireUtils.h

/*
The DESFire stack portion of this firmware source
is free software written by Maxie Dion Schmidt (@maxieds):
You can redistribute it and/or modify
it under the terms of this license.

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.

The complete source distribution of
this firmware is available at the following link:
https://github.com/maxieds/ChameleonMiniFirmwareDESFireStack.

Based in part on the original DESFire code created by
@dev-zzo (GitHub handle) [Dmitry Janushkevich] available at
https://github.com/dev-zzo/ChameleonMini/tree/desfire.

This notice must be retained at the top of all source files where indicated.
*/

/*
 * DESFireUtils.h
 * Maxie D. Schmidt (github.com/maxieds)
 */

#ifndef __DESFIRE_UTILS_H__
#define __DESFIRE_UTILS_H__

#include <stdarg.h>

#include "DESFireFirmwareSettings.h"

#define UnsignedTypeToUINT(typeValue) \
    ((UINT) typeValue)
#define ExtractLSBLE(ui) \
    ((BYTE) (((UnsignedTypeToUINT(ui) & 0xff000000) >> 24) & 0x000000ff))
#define ExtractLSBBE(ui) \
    ((BYTE) (UnsignedTypeToUINT(ui) & 0x000000ff))

void RotateArrayRight(BYTE *srcBuf, BYTE *destBuf, SIZET bufSize);
void RotateArrayLeft(BYTE *srcBuf, BYTE *destBuf, SIZET bufSize);
void ConcatByteArrays(BYTE *arrA, SIZET arrASize, BYTE *arrB, SIZET arrBSize, BYTE *destArr);

void Int32ToByteBuffer(uint8_t *byteBuffer, int32_t int32Value);
void Int24ToByteBuffer(uint8_t *byteBuffer, uint32_t int24Value);
int32_t Int32FromByteBuffer(uint8_t *byteBuffer);

SIZET RoundBlockSize(SIZET byteSize, SIZET blockSize);

/* Copied from the READER configuration sources: */
uint16_t DesfireAddParityBits(uint8_t *Buffer, uint16_t bits);
uint16_t DesfireRemoveParityBits(uint8_t *Buffer, uint16_t BitCount);
bool DesfireCheckParityBits(uint8_t *Buffer, uint16_t BitCount);

#endif