Question: I am trying to decode a Vigenere cipher in python knowing the ciphertext and plaintext I have a string of text in this form 'SDFJNKSJDFOSNFDF'. I want to convert each letter to a number so I’m able to decode ...
Question: so I understand that Vigenere Cipher can be cracked, without key, by using frequency analysis and there are some clever ways to get the key length. My question is what if we encrypt the ciphertext again with a different ...