cryptopals_c

commit 772a79bfbb99aa54f35b41d118375f9a153cfb63
parent 21ed72c1e14495d5f0b7dd49e603560cccc57fd8
Author: superpozycja <anna@superpozycja.net>
Date:   Sat, 22 Feb 2025 19:21:23 +0100

cleanup commit

Diffstat:
M
.gitignore
 | 
1
+
M
data/1_4.txt
 | 
3
+--
M
lib/analysis.c
 | 
1
+
M
src/s1/c6.c
 | 
6
+++---
M
src/s1/c7.c
 | 
37
++-----------------------------------

5 files changed, 8 insertions(+), 40 deletions(-)
diff --git a/.gitignore b/.gitignore
@@ -1,2 +1,3 @@
 *.swp
 bin
+tags
diff --git a/data/1_4.txt b/data/1_4.txt
@@ -324,4 +324,4 @@ e03555453d1e31775f37331823164c341c09e310463438481019fb0b12fa
 1c595d183539220eec123478535337110424f90a355af44c267be848173f
 41053f5cef5f6f56e4f5410a5407281600200b2649460a2e3a3c38492a0c
 4c071a57e9356ee415103c5c53e254063f2019340969e30a2e381d5b2555
-32042f46431d2c44607934ed180c1028136a5f2b26092e3b2c4e2930585a
-\ No newline at end of file
+32042f46431d2c44607934ed180c1028136a5f2b26092e3b2c4e2930585a
diff --git a/lib/analysis.c b/lib/analysis.c
@@ -100,6 +100,7 @@ static float get_i_c_m(ba *ct, unsigned int m)
 {
 	float res;
 	int i;
+
 	res = 0;
 	for (i = 0; i < m; i++) {
 		ba *chunk = (ba *) malloc(sizeof(ba));
diff --git a/src/s1/c6.c b/src/s1/c6.c
@@ -15,7 +15,7 @@ void break_w_keylen(ba *ct, unsigned int m)
 
 		chunk->len = ct->len / m;
 		chunk->val = (uint8_t *) malloc(sizeof(uint8_t) * chunk->len);
-		
+
 		for (j = 0, k = 0; j <chunk->len &&  k + i < ct->len; j++, k += m)
 			chunk->val[j] = ct->val[k + i];
 
@@ -51,8 +51,8 @@ int main(int argc, char *argv[])
 	}
 
 	base64_to_hex(&hex, b64);
-	ct = ba_from_hex(hex);	
-	
+	ct = ba_from_hex(hex);
+
 	int m = guess_vigenere_keylen(ct);
 
 	break_w_keylen(ct, m);
diff --git a/src/s1/c7.c b/src/s1/c7.c
@@ -4,34 +4,6 @@
 #include <ba.h>
 #include <util.h>
 
-/*
-int decrypt(unsigned char *ct, int ct_len, unsigned char *key,
-	    unsigned char *pt)
-{
-	EVP_CIPHER_CTX *ctx;
-	int pt_len;
-	int len;
-
-	if (!(ctx = EVP_CIPHER_CTX_new()))
-		return -1;
-
-	if(EVP_DecryptInit_ex(ctx, EVP_aes_128_ecb(), NULL, key, NULL) != 1)
-		return -1;
-
-	if(EVP_DecryptUpdate(ctx, pt, &len, ct, ct_len) != 1)
-		return -1;
-
-	pt_len = len;
-
-	if(EVP_DecryptFinal_ex(ctx, pt + len, &len) != 1)
-		return -1;
-	pt_len += len;
-
-	EVP_CIPHER_CTX_free(ctx);
-	return pt_len;
-}
-*/
-
 int main(int argc, char *argv[])
 {
 	unsigned char *key = (unsigned char*) "YELLOW SUBMARINE";
@@ -55,11 +27,6 @@ int main(int argc, char *argv[])
 	}
 
 	base64_to_hex(&hex, b64);
-	
-	pt = (char *) malloc(sizeof(char) * strlen(hex) + 1);
-
-	//pt_len = decrypt(hex, strlen(hex), key, pt);
-
-	/* Add a NULL terminator. We are expecting printable text */
-	//pt[pt_len] = '\0';
+	printf("%s\n", hex);
+	return 0;
 }