Vigenère Cipher
A method of encrypting alphabetic text by using a simple form of polyalphabetic substitution.
Vigenère Cipher Encryption Tool
Encrypt or decrypt messages using the Vigenère Cipher algorithm
The key will be repeated to match the length of your message.
About Vigenère Cipher
The Vigenère cipher was invented by Blaise de Vigenère in the 16th century and is a method of encrypting alphabetic text using a series of interwoven Caesar ciphers.
Key Visualization
Encrypt or decrypt a message to see the key visualization.
The key "KEY" is repeated to match the length of your message.