Module cipher_crypt::vigenere
source · Expand description
The Vigenère Cipher is a polyalphabetic substitution cipher. It was considered ‘le chiffre indéchiffrable’ for 300 years until Friedrich Kasiski broke it in 1863.
For example, given the message ATTACK AT DAWN
and the key was CRYPT
then the calculated
encoding key would be CRYPTC RY PTCR
.
Structs
A Vigenère cipher.