Caesar Cipher

Downloadable Caesar Cipher Software

Get your FREE Secret Code Breaker – Caesar Cipher Program. This program Enciphers and Deciphers secret messages using the Caesar Cipher. A different version than the online version below, it is exactly like the Caesar Cipher program that comes on the diskette included with “Secret Code Breaker – A Cryptanalyst’s Handbook”

Click here to Download

The download is a Zip file. Requires a computer running DOS or Windows.
Currently no Macintosh version is available (will run using RealPC).

Online Caesar Cipher Decipher/Encipher

How to use the online Caesar Cipher:

To decipher a secret message that was enciphered using a Caesar Cipher:

  1. Place the secret message in the top space.
  2. Click decipher.
  3. Then click each Key button in turn. One Key button will reveal the secret message

To encipher a secret message using a Caesar Cipher:

  1. Key in a word or a short phrase in the top box
  2. Select Encipher.
  3. Select the desired KEY (by “clicking” a letter button).
  4. See the enciphered message in the bottom box.

(Your Browser must be JavaScript Enabled for this Cipher to work!)

Try this secret message – JHLZHY JPWOLYZ HYL LHZF AV IYLHR



Encipher

Decipher

Message:





























Result: