# Vigenère Cipher

> Encrypt or decrypt with the Vigenère, Beaufort or autokey cipher and guess an unknown key with Kasiski and index-of-coincidence analysis.

- URL: https://prismkit.hippodev.app/en/crypto/vigenere-cipher
- Category: Crypto & Security
- Runs: client-side, no upload

This is an interactive tool — open https://prismkit.hippodev.app/en/crypto/vigenere-cipher to use it.