olemorud/vigenere-cracker
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Make random seed constant and change output

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Ole Morud
2024-09-05 04:40:41 +02:00
parent 9bae0ee76d
commit 4066a60ac6
1 changed files with 5 additions and 9 deletions
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14
crack-vigenere.c
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@@ -158,7 +158,7 @@ static void vigenere_decode(struct str text, char* output, const char* key, size
int main(int argc, char** argv) int main(int argc, char** argv)
{ {
srand(time(NULL)); srand(0);
FILE* f = argc < 2 FILE* f = argc < 2
? stdin ? stdin
@@ -228,21 +228,17 @@ int main(int argc, char** argv)
} }
} }
/* print key */ /* print key to stdout (other info goes to stderr) */
printf("key: "); printf("key: ");
for (size_t i = 0; i < key_len; i++) { for (size_t i = 0; i < key_len; i++) {
printf("%c", charset[key[i]]); printf("%c", charset[key[i]]);
} }
printf(" (");
for (size_t i = 0; i < key_len - 1; i++) {
printf("%d, ", key[i]);
}
printf("%d)", key[key_len - 1]);
printf("\n");
vigenere_decode(text, text.data, key, key_len, charset, sizeof charset); vigenere_decode(text, text.data, key, key_len, charset, sizeof charset);
//str_println(text, stdout); /* print preview to stderr to avoid clutter when piping */
fprintf(stderr, "preview:\n");
str_println(str_slice(text, 0, 79), stderr);
str_free(&text); str_free(&text);