Hints

Some hints which may help you:

• Try to find out how long a character will be encrypted
• What will happen if you encrypt multipe times the same character (aaaaa)?
• What will happen if you encrypt some characters which follows on each other (abcde)
• The '0' often will help you to get an idea.
• Will you get always the same result if you encrypte the same text again? (hard level)

Dont despair :)
And have fun!