CAESAR CIPHER IN PYTHON

$($ENCRYPTION AND DECRYPTION$)$

The Caesar Cipher is a technique in which an encryption algorithm is used to

change some text for gaining integrity, confidentiality, or security of a message.

In cryptography there are many algorithms that are used to achieve the same,

but Caesar cipher is the earliest and easiest algorithm used among encryption

techniques. This algorithm was named after Julius Caesar who was a Roman

general and statesman.

TERMINOLOGY

Encryption : The process of changing a given text or message to an encoded

format using any encryption algorithm so that it cannot be read normally and

can only be accessed by an authorized user.

Decryption : The process of converting the encoded or encrypted message

back to its original form, usually by applying the same encryption method in

reverse.

Plaintext : The original message which needs to be sent to the end user.

Ciphertext : The resulting message formed when an encryption algorithm is

applied on the plaintext.

Shift : Integer between zero and twenty$-$five which can tell us how many shifts

will be applied on a character.