cryptopals_c

commit 68c30d63749eb3d54e8895ab069bfd5bdac3d320
parent 71ac60e9be73526d8564c0948c09cdf594b1f4d4
Author: anna <anna@brokenlove.online>
Date:   Tue, 27 Aug 2024 23:12:42 +0200

some style changes

Diffstat:
M
s1/c2.c
 | 
7
+++++--
M
s1/c4.c
 | 
26
+++++++++++++++++---------

2 files changed, 22 insertions(+), 11 deletions(-)
diff --git a/s1/c2.c b/s1/c2.c
@@ -1,15 +1,18 @@
 #include <ba.h> /* see my tools repo for this */
 
 int main(int argc, char* argv[]) {
-	if (argc != 3)
-		return -1;
 	ba* a;
 	ba* b;
+
+	if (argc != 3)
+		return -1;
+
 	a = ba_from_hex(argv[1]);
 	b = ba_from_hex(argv[2]);
 	if (a == NULL || b == NULL) {
 		return -1;
 	}
+
 	ba_xor(a, b);
 	ba_fprint(a, stdout, 0);
 	printf("\n");
diff --git a/s1/c4.c b/s1/c4.c
@@ -7,9 +7,11 @@
 
 void preprocess_string(char (*l)[MAXLEN])
 {
+	int i;
+
 	while (isspace(**l))
 		*l++;
-	for (int i = 0; i < strlen(*l); i++) {
+	for (i = 0; i < strlen(*l); i++) {
 		if ((*l)[i] == '\n') {
 			(*l)[i] = '\0';
 			break;
@@ -19,23 +21,29 @@ void preprocess_string(char (*l)[MAXLEN])
 
 int main(int argc, char* argv[])
 {
-	if (argc != 2)
-		return -1;
-	FILE *p = fopen(argv[1], "r");
+	unsigned long maxscore;
 	char l[MAXLEN];
-	//char best[MAXLEN];
-	unsigned long maxscore = 0;
+	ba *best;
+	FILE *p;
 	ba *ct;
-	ba *best = (ba *) malloc(sizeof(ba));
+
+	if (argc != 2)
+		return -1;
+
+	p = fopen(argv[1], "r");
+	maxscore = 0;
+	best = (ba *) malloc(sizeof(ba));
+
 	while (fgets(l, sizeof(l), p)) {
+		unsigned long score;
+
 		preprocess_string(&l);
 		ct = ba_from_hex(l);
 		ct = decrypt_scxor(ct);
-		unsigned long score = score_english(ct);
+		score = score_english(ct);
 		if (score > maxscore) {
 			maxscore = score;
 			ba_copy(best, ct);
-			//strcpy(best, l);
 		}
 	}
 	ba_fprint_ascii(best, stdout, 0);