How to Use This Program

A Caesar Cipher is a cipher where the cipher alphabet is the standard alphabet shifted to the left or right by some amount. Ceasar ciphers are trivial to solve, but having a Caesar Cipher encryption/decryption tool like this one can come in handy when working on Vigenere ciphers since that form of cipher uses multiple different Caesar alphabets.

Here is a short example of a Caesar Cipher: DAHHK SKNHZ The way a Caesar Cipher is solved is to write down the alphabet in vertical columns starting with each letter of the message at the head of each colum. So, for example, Under D we would write E, F, G, H, I, ... and so on, in a vertical column inder the D, starting over with A when we hit Z. The result looks like this:

      DAHHK SKNHZ
      EBIIL TLOIA
      FCJJM UMPJB
      GDKKN VNQKC
      HELLO WORLD
      IFMMP XPSME
      JGNNQ YQTNF
      KHOOR ZRUOG
      LIPPS ASVPH
    

Scanning down that list is should be clear that only one line actually makes sense, and that line is the solution to the cryptogram.

For using this program to solve Vigenere ciphers, check this page