cryptopals_c

commit ebd62e982ee37128d8ddbd85b3c1fca17b209106
parent d59e0ba78af694145bd37963e8ee7397182d7080
Author: anna <anna@brokenlove.online>
Date:   Sun, 24 Mar 2024 00:11:35 +0100

chall 2

Diffstat:
M
s1/build.sh
 | 
4
+++-
A
s1/c2.c
 | 
20
++++++++++++++++++++

2 files changed, 23 insertions(+), 1 deletion(-)
diff --git a/s1/build.sh b/s1/build.sh
@@ -1,4 +1,6 @@
-#!/bin/sh
+#!/bin/zsh
+
+source ~/.zshrc
 
 for filename in *.c; do
     echo "compiling $filename"
diff --git a/s1/c2.c b/s1/c2.c
@@ -0,0 +1,20 @@
+#include <ba/ba.h> /* see my tools repo for this */
+
+int main(int argc, char* argv[]) {
+    if(argc != 3) {
+        return -1;
+    }
+    ba* a;
+    ba* b;
+    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");
+    ba_free(a);
+    ba_free(b);
+    return 0;
+}