analysis weakness that can crack the simple substitution cipher for centuriesthe vigenere cipher represented the state of the art in cryptography you'll notice many similarities between the code for the vigenere and caesar cipher programs more info about the vigenere cipher can be found at more about ciphers and code breakingyou can read my book cracking codes with python (no starch press the program in action when you run vigenere pythe output will look like thisvigenere cipherby al sweigart al@inventwithpython com the vigenere cipher is polyalphabetic substitution cipher that was powerful enough to remain unbroken for centuries do you want to ( )ncrypt or ( )ecrypte please specify the key to use it can be word or any combination of letterspizza enter the message to encrypt meet me by the rose bushes tonight encrypted messagebmds mt jx sht znre qcrgeh bnmivps full encrypted text copied to clipboard how it works because the encryption and decryption processes are fairly similarthe translatemessage(function handles both of them the encryptmessage(and decryptmessage(functions are merely wrapper functions for translatemessage(in other wordsthey are functions that adjust their argumentsforward these to another functionand then return that function' return value this program uses these wrapper functions so that they can be called in manner similar to encryptmessage(and decryptmessage(in project "simple substitution cipher you can import these projects as modules in other programs to make use of their encryption code without having to copy and paste the code directly into your new program """vigenere cipherby al sweigart al@inventwithpython com the vigenere cipher is polyalphabetic substitution cipher that was powerful enough to remain unbroken for centuries more info at view this code at tagsshortcryptographymath"" try import pyperclip pyperclip copies text to the clipboard project #