Draft Scratch program for a forthcoming Hyett Education cryptography / cybersecurity workshop. If you use a number between 1 and 10 for an encryption / decryption key, the result will be a simple Caesar shift. Other keys will shift individual letters in your message by differing numbers of characters.
The 'enter code' menu option is specific to the workshop plan, and won't make sense out of context. For information on workshops provided by Hyett Education, visit hyetteducation.com.