Encryption Tool

Vigenère Cipher

Encrypt and decrypt text using polyalphabetic substitution and visualize frequency patterns in real-time.

About the Vigenère Cipher

The Vigenère Cipher improves upon the Caesar Cipher by using a keyword to determine shifting values for each letter, making it more resistant to frequency analysis. Here, you can experiment interactively and visualize how letter frequency and mappings change.

Vigenère Cipher Tool


Result:
Your encrypted/decrypted text will appear here...
Mapping Matrix:
Original Character Key Character Encrypted/Decrypted