Vigenére Autokey

This is an extension to the Vigenere cipher that makes it much harder to break. Instead of repeating the passphrase over and over in order to encrypt the text, the passphrase is used once and the cleartext is used to decrypt or encrypt the text.

Alphabet Key: -

Alphabet Used: ABCDEFGHIJKLMNOPQRSTUVWXYZ - Show Tableau

Passphrase:

Your message:

This is your encoded or decoded text:

Do not give your dog chocolate. It affects the animal's heart and nervous system and a few ounces is enough to kill a small sized dog. White chocolate, while not the same as actual chocolate, also acts as a toxin and is very bad for your pup. Tyler Akins <>
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