The objective is to demonstrate character/ symbol frequency distribution analysis (reference to the English language) on 2 vintage ciphers, namely Caesar cipher (a mono-alphabetic substitution cipher) and the Vigenere cipher (a poly-alphabetic substi

凯撒密码的加密，凯撒密码的解密，凯撒加密算法，自动检错-Caesar cipher encryption, decryption password Caesar, Caesar encryption algorithm, automatic error detection

Caesar cipher encryption decryption