Skip to contentVigenère is a classical polyalphabetic substitution cipher — historically used before modern encryption.
The Vigenère cipher encrypts text using a repeating keyword to shift letters — stronger than Caesar cipher but broken by Kasiski examination and modern cryptanalysis.
Educational tools help students understand classical crypto. Tentaco Vigenère tool encrypts/decrypts locally for learning — never use it for real secrets; use AES and TLS instead.
