The 35-year-old saga of Kryptos, an enigmatic sculpture containing four encrypted messages outside the CIA headquarters, just took a bizarre twist. Though cryptographers broke the first three passages ...

A hands-on set of Python scripts for teaching and experimenting with the classic Caesar cipher. The project walks learners from alphabet visualizations all the way to a simple interactive sandbox. .

To perform a frequency analysis on a ciphertext, returning a list of most common letters, bigrams, and trigrams with their percentage frequencies and up to "n" suggestions for possible Caesar cipher ...

Founded in 1920, the National Council of Teachers of Mathematics (NCTM) is the world's largest mathematics education organization throughout the United States and Canada.