FUNDAMENTALS OF COMPUTER

Detailed explanation-1: -The Caesar Cipher is a type of shift cipher. Shift Ciphers work by using the modulo operator to encrypt and decrypt messages. The Shift Cipher has a key K, which is an integer from 0 to 25.

Detailed explanation-2: -The Caesar cipher is named after Julius Caesar, who, according to Suetonius, used it with a shift of three (A becoming D when encrypting, and D becoming A when decrypting) to protect messages of military significance.

Detailed explanation-3: -Numbers expands the alphabet and are included to the rotations. Other symbols except letters and numbers are not transformed. The classic Caesar cipher applies transformation only to letters. Transformation, known as ROTN, where ROT is from “ROTATE” and N is the value of cyclical shift, defines letter substitution.

Detailed explanation-4: -To decrypt a message, enter the message in the Ciphertext textbox, specify the shift, and click Decrypt. Note that, in this implementation, strings are converted to upper case before encryption/decryption, and spaces and punctuation marks are not encrypted/decrypted.

Detailed explanation-5: -How to decrypt Caesar cipher? Caesar code decryption replaces a letter another with an inverse alphabet shift: a previous letter in the alphabet. Example: Decrypt GFRGHA with a shift of 3. To decrypt G, take the alphabet and look 3 letters before: D . So G is decrypted with D .