diff --git a/src/encrypt.lua b/src/encrypt.lua
index 2d9a3ae..522b63b 100644
--- a/src/encrypt.lua
+++ b/src/encrypt.lua
@@ -1,9 +1,15 @@
 --[[
 implementation of the RC5 cipher in Lua5.1
+Licensed under the GNU GPLv3 license
 
-03/11/2022
+03/28/2022
 Sean Smith
 sean@spacealien.xyz
+
+todo:
+move setup, encrypt, and decrypt to functions
+use file io to encrypt files
+
 ]]
 
 local inspect = require 'inspect'