main.py

@@ -1,6 +1,5 @@
-if __name__ == "__main__":
-
-    message = format(int.from_bytes(input().encode("ASCII"), "big"), "b")
+def encode(M):
+    message = format(int.from_bytes(M.encode(), "big"), "b")
     generator = "10001000000100001"
     gen_deg = len(generator)
 
@@ -23,9 +22,28 @@ if __name__ == "__main__":
             message = message[1:]
         else:
             chunk = message[:gen_deg]
+
             if len(chunk) < gen_deg:
-                print(hex(int(chunk, 2)))
-                break
+                chunk = "00" + chunk
+                return chr(int(chunk[:8], 2)) + chr(int(chunk[8:], 2))
 
             remainder = format(int(chunk, 2) ^ int(generator, 2), "b")
             message = remainder + message[gen_deg:]
+
+
+def decode(N):
+    message = format(int.from_bytes(N.encode(), "big"), "b")
+
+    while len(message) % 8 != 0:
+        message = "0" + message
+        
+
+
+if __name__ == "__main__":
+    M = input()
+    N = encode(M)
+    # print(N)
+    decode(M+N)
+# 0011110110111000
+# 11000010111100101111001001111011100001010111000
+#                                0011110110111000