Gronsfeld Cipher

The Gronsfeld cipher is a polyalphabetic cipher, a series of Caesar ciphers, where the shift is determined by numbers (between 0 and 9). It is similar to the Vigenère cipher, but the key uses digits instead of letters.

You must enter the message.

Digital Key
You must enter the encryption key.

Cipher Mode

Alphabet Key

The following buttons can be used to manipulate the text into various forms such as uppercase, lowercase, reverse text, etc. The choice text chosen will be copied and a new page will be opened.