This is fun project of Caesar Cipher 🤩
In cryptography, a Caesar cipher, also known as Caesar's cipher, the shift cipher, Caesar's code or Caesar shift, is one of the simplest and most widely known encryption techniques. It is a type of substitution cipher in which each letter in the plaintext is replaced by a letter some fixed number of positions down the alphabet. For example, with a left shift of 3, D would be replaced by A, E would become B, and so on. The method is named after Julius Caesar, who used it in his private correspondence.
The encryption step performed by a Caesar cipher is often incorporated as part of more complex schemes, such as the Vigenère cipher, and still has modern application in the ROT13 system. As with all single-alphabet substitution ciphers, the Caesar cipher is easily broken and in modern practice offers essentially no communications security.
For example, in the following joke, the punchline has been obscured by ROT13:
Why did the chicken cross the road?
Gb trg gb gur bgure fvqr!
Transforming the entire text via ROT13 form, the answer to the joke is revealed:
Jul qvq gur puvpxra pebff gur ebnq?
To get to the other side!
A second application of ROT13 would restore the original.