Caesar cipher is an encryption technique in which each letter in the plain text is replaced by a letter some fixed number of positions down the alphabet. For example, with a shift of one, A would be replaced by B, B would become C, and so on. The method is named after Julius Caesar, who used it in his private correspondence.
For decryption steps are exactly opposite to this where instead shifting down we shift up like B will become A for shift = 1.
You can also checkout playfair cipher for encryption and decryption. playfair cipher encoder/decoder.
1. One of the easiest methods to use in cryptography which is easy to understand.
2. Use of only a short key in the entire process.
3. Can be an best method for the system which cannot use any complicated coding techniques.
4. Requires few computing resources.