From f0d73a3137f3d0525a1a3118eb4f748e0fbefb6d Mon Sep 17 00:00:00 2001
From: blackbeard420 <blackbeard@blackbeard420.me>
Date: Mon, 6 Nov 2023 21:28:32 -0500
Subject: [PATCH] initial commit

---
 fxkr.c   | 46 ++++++++++++++++++++++++++++++++++++++++++++++
 makefile |  3 +++
 2 files changed, 49 insertions(+)
 create mode 100644 fxkr.c
 create mode 100644 makefile

diff --git a/fxkr.c b/fxkr.c
new file mode 100644
index 0000000..a15a905
--- /dev/null
+++ b/fxkr.c
@@ -0,0 +1,46 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+
+int
+get_char_int(char in)
+{
+    char buf[2];
+    buf[0] = in;
+    buf[1] = 0;
+    return atoi(buf);
+}
+
+char*
+decode(char *in)
+{
+    static char result[9];
+    int idx = 0;
+
+    if (strlen(in) != 16) {
+        return NULL;
+    }
+
+    for (int i = 0; i < 15; i += 2, ++idx) {
+        int first = get_char_int(in[i]);
+        int second = get_char_int(in[i+1]);
+        result[idx] = first * 16 + second;
+    }
+
+    result[8] = 0;
+
+    return &result[0];
+}
+
+
+int
+main(int argc, char **argv)
+{
+    char *input = "3041314232433344";
+    char *result = decode(input);
+
+    printf("keyword is: %s\n", result);
+
+    return 0;
+}
+
diff --git a/makefile b/makefile
new file mode 100644
index 0000000..f854873
--- /dev/null
+++ b/makefile
@@ -0,0 +1,3 @@
+CFLAGS = -Wall
+
+all: fxkr