n-Up Book - Periodical Cipher

May 30, 2023

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	This 'n-up' book by WebAmphibian.Com explains a very simple 'paper and pencil' encryption algorythm called the 'Periodical Cipher.' It is suitable for printing on any color printer (duplexing is a plus). This cipher is called a "substitution" cipher, because the words or letters of the plain text are substituted by the encryption key for communication.


Print the page	Cut the page up	Make them the same size	Order the pages	Fold and staple