The Caesar Cipher

The Caesar Cipher has an important place in history. Julius Caesar is said to have been the first to use this schema, in which each letter is translated to a letter a fixed number of places after it in the alphabet. Caesar used a shift of 3, so that plaintext letter pi was enciphered as ciphertext letter ci by the rule

                                                    

                                           Ci=E(pi)=pi+3

A full translation chart of the Caesar Cipher is shown here

Plaintext      A B C D E F G H I J K L M  N O P Q R S T U V W X Y Z

Ciphertext    d  e  f  g  h  i  j  k  l  m  n  o  p  q  r  s  t   u  v  w  x y z  a b c  

 We ca use the encryption process and we get the result as follows;

TREATY IMPOSSIBLE

 It would be encoded as

T  R  E  A  T   Y           I  M  P  O  S  S  I  B  L  E

w  u   h   d   w   b           l   p   s   r   v   v  l   e   o  h