fix: adjust seek offset for small files in createTorrentSum

bin/createTorrentSum.py

@@ -96,8 +96,13 @@ def get_md5_sum(file_path, megabytes=1):
         Se utiliza para crear el archivo ".sum" (para transferencias Unicast y Multicast).
     """
     hash_md5 = hashlib.md5()
+    file_size = os.path.getsize(file_path)
+    seek_offset = -megabytes * 1024 * 1024
+    if file_size < (-seek_offset):
+        seek_offset = -file_size
+        
     with open(file_path, "rb") as f:
-        f.seek(-megabytes * 1024 * 1024, os.SEEK_END)
+        f.seek(seek_offset, os.SEEK_END)
         data = f.read(megabytes * 1024 * 1024)
         hash_md5.update(data)
     return hash_md5.hexdigest()