helpers.c
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	#include <stdio.h>

	#include "helpers.h"
	#include "extra_api.h"

	void stateCopy(unsigned char a[4][4], unsigned char b[4][4]){
	int i, j;

	for(i = 0; i < 4; i++)
	for(j = 0; j < 4; j++)
	a[i][j] = b[i][j];
	}

	void tweakeyCopy(unsigned char tweakey[TWEAKEY_BLOCKSIZE_RATIO][4][4], unsigned char input[TWEAKEY_BLOCKSIZE_RATIO][4][4]){
	int i, j, k;

	for(k = 0; k < TWEAKEY_BLOCKSIZE_RATIO; k++)
	for(i = 0; i < 4; i++)
	for(j = 0; j < 4; j++)
	tweakey[k][i][j]=input[k][i][j];
	}

	void stateToCharArray(unsigned char* array, unsigned char state[4][4]){

	int i;

	#ifdef CRYPTO_BLOCKSIZE_8
	for(i = 0; i < 8; i++)
	array[i] = ((state[(2i)>>2][(2i)&0x3] & 0xF) << 4) \| (state[(2i+1)>>2][(2i+1)&0x3] & 0xF);
	#endif
	#ifdef CRYPTO_BLOCKSIZE_16
	for(i = 0; i < 16; i++)
	array[i] = state[i>>2][i&0x3] & 0xFF;
	#endif

	}