How to Encrypt and Decrypt This program uses the Caesar Cipher algorithm, which we discussed last month. As a review, this cipher works by shifting each letter by 0 to 25 times.

The Caesar cipher A simple method of encryption requires the use of a technique known as the Caesar cipher. The technique was invented by Julius Caesar who lived from 100BC to 44BC.

Secret code or foreign language? For machines, it might not matter. Without any prior knowledge, artificial intelligence algorithms have cracked two classic forms of encryption: the Caesar cipher ...