Gronsfeld Cipher

The Gronsfeld cipher is essentially a Vigenere cipher, but uses numbers instead of letters. So, a Gronsfield key of 0123 is the same as a Vigenere key of ABCD. This online version lets you encode and decode messages with a keyed alphabet as well, to allow for maximum flexibility.

Alphabet Key: -


Cipher Key:

Vigenere Equivalent:

Your message:

This is your encoded or decoded text:

Bruce Lee was so fast that he had to slow down his moves so the camera would catch them. The film was then slowed down so the audience would see them. At that time, the norm was to speed up the film to make the fights more spectacular. Tyler Akins <>
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