Vigenere Cipher

With a Vigenere Cipher, you can encode as well as decode text.

What to do

Click on different buttons to use the Vigenere Cipher to encode plaintext and decode cipher text. If you would like to see Keyword Transfer, click here

Vigenere Cipher Controls

How it works (simplified)

The Vigenere Cipher is a complicated Shift Cipher. Every letter in the keyword is a shift, which is applied to the letter in the plaintext. To get a more in depth version, go here.