Re:Crypto 101 – Introductory course on cryptography
by stcredzero on Friday December 02, 2016 @01:24PM
(#13090944)
Vigenère ciphers based on xor: xor the ciphertext with itself at varying offsets. Stop when you detect likely plaintext in the result.
Is there a general way to attack naive ciphers?
I fall of at even a proper Vigenère cipher, although I guess I could hack together a terribly inefficient python script to test all options and then print them line by line and start visually scanning for patterns :-/