#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <conio.h>
#include <math.h>

int main()
{

int d = 89;
int p = 79;
int q = 59;
int n = p * q; // int n = 79*59=4661
int phi = (p - 1) * (q - 1); // phi = 78*58=4524
int e = d % phi; //e = 89 mod 4524 = 89 = d
char txt_crip[200];
char crip[200] ="\0";
char desc;
int crip_aux[200], desc_aux;
int i=0, j=0;
int contador=0;

char texto[200] ="elivelton"; //elivelton00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
//onde 0 é o char \0=nullchar ou fim de string

printf("\n\nOriginal : \n");
printf("%s", texto);

             for(i=0;i<200;i++){
                               crip[i]=0;
                               }
i=0;
while (i<strlen(texto))
     {
        crip[i] = (texto[i] ^ e) % n; //(texto[i] elevado a 89) resto de 4661
     i++;
    }

printf("\n\nCriptografado: \n");
printf("%s", crip);

printf("\n\n");

}