This project implements the classical Playfair cipher, a manual symmetric encryption technique based on digraph substitution. The program generates a 5×5 key matrix from a user-provided key (with the ...

Abstract: In this study, we present the Multi-Staged Matrix Transformations Playfair Cipher (MSMT-PF), a novel approach designed to advance the traditional Playfair cipher's encryption security. While ...

Abstract: This study presents an enhanced version of the classical Hill Cipher algorithm, utilizing a rectangular key matrix to expand the key space and improve the security of digital image ...

This March 20-28, join the actors at Threepenny Theater Co. for The Cipher in the Stream, an original interactive murder mystery and fundraiser for the Chetco Activity Center, which is gearing up for ...