Caesar-Myszkowski cipher is a combination of two cryptographic techniques. The enhanced Caesar cipher, a type of substitution cipher in which a letter some number of positions down the alphabet determined by modular arithmetic replaces each letter in the plaintext, and Myszkowski transposition, a variant form of columnar transposition that requires a keyword with recurrent letters. Unique Features: - Uses Graphical User Interface. - Allows the user to select a file to encipher and decipher. - Creates a new file in each ciphering process, however, overwrites the old one from the previous process if it does exist in the specified directory. Notes: - Does not preserve punctuations, spaces, and digits in the ciphering process. - Only works if all text is compatible with ASCII. Author: Francis Nathanael De Villena | fnodevillena@usep.edu.ph Version 2.2 2020/11/26 Kindly contact me if you want to use the source code or any other issues. There are some test text files within files\plaintexts, kindly check it out.