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:

The "ye" in "ye olde" is pronounced "the." When looking for a letter, the Romans related the "th" sound to the word "thorn." They looked for a letter that most resembled a thorn, and it was the lowercase y. Tyler Akins! <>
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