Another system which dates to ancient times was supposedly used by Julius Caesar called the Caesar cryptosystem. Apparently, Julius Caesar usually used the key value k=3. His nephew Octavian, who la...Another system which dates to ancient times was supposedly used by Julius Caesar called the Caesar cryptosystem. Apparently, Julius Caesar usually used the key value k=3. His nephew Octavian, who later became the emperor Augustus, liked to use k=−1.
