solution pour rotary (rijndael samiam)

Code:
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#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <stdbool.h>
#include <time.h>
 
int main (int argc, char * argv[])
{
	/** a1b2c3d4 = 4*8 = 32 */
	/** 
        76543210 
        a1b2c3d4
        */
	unsigned char *y; /** 4*8=32 */
	uint8_t g;
	uint16_t h;
	uint32_t k, l, m, n, o;
	short i = 0, j = 0;
	/** printf("valeur de x ? :\n"); 
        scanf("%x", &y); */
	y = 0xa1b2c3d4;
	printf("valeur de y ! : %x\n", y);
	printf("valeur de ${#y[@]} ! : %d×8\n", sizeof(y));
	g = y;
	h = y;
	k = y;
	l = k - g;
	m = (g << 24); //6*4
	n = (k >> 8);
	o = m+n;
	printf("valeur de g ! : %x %x %x %x %x %x %x\n", g, h, k, l, m, n, o);
}