62 lines
1.1 KiB
C
62 lines
1.1 KiB
C
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#include <stdio.h>
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#include <stdlib.h>
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#include <time.h>
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#include "fonctions.h"
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int codage(int argc, char *argv[]) {
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FILE *f_m, *f_k, *f_mc; /* strcutures permettant, une fois FOPEN
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exécuté de recupérer des informations pour manipuler les fichiers
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en C */
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int c;
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int k1;
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int calcul;
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int count;
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char cle[100];
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char * cheminFic_m = "message.txt";
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char * cheminFic_k = "cle.txt";
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char * cheminFic_mc = "message_c.txt";
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//1
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f_m = fopen(cheminFic_m, "r");
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for (c = getc(f_m); c != EOF; c = getc(f_m))
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{
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count = count + 1;
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}
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generate(count);
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fclose(f_m);
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//2
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f_k = fopen(cheminFic_k, "wb");
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if (f_k)
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{
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fwrite(cle, sizeof(char), count, f_k);
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}
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else
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{
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return EXIT_FAILURE;
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}
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f_k = fopen(cheminFic_k, "r");
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/* Traitement erreur */
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fclose(f_k);
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//3
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f_mc = fopen(cheminFic_mc, "w");
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/* Traitement erreur */
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fclose(f_mc);
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f_m = fopen(cheminFic_m, "r");
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f_k = fopen(cheminFic_k, "r");
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f_mc = fopen(cheminFic_mc, "wb");
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while ((c = fgetc(f_m)) != EOF)
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{
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k1 = fgetc(f_k);
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calcul = (c+k1) % 256;
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fputc(calcul, f_mc);
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}
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fclose(f_m);
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fclose(f_k);
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fclose(f_mc);
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return EXIT_SUCCESS;
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}
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