COMPUTER NETWORKING

Detailed explanation-1: -The Shift Cipher. Also known as the Caesar cipher, the shift cipher is one that anyone can readily understand and remember for decoding. It is a form of the substitution cipher. By shifting the alphabet a few positions in either direction, a simple sentence can become unreadable to casual inspection.

Detailed explanation-2: -Substitution ciphers. Replace bits, characters, or character blocks in plaintext with alternate bits, characters or character blocks to produce ciphertext. A substitution cipher may be monoalphabetic or polyalphabetic: A single alphabet is used to encrypt the entire plaintext message.

Detailed explanation-3: -The Caesar cipher is a type of substitution cipher in which each alphabet in the plaintext or messages is shifted by a number of places down the alphabet. For example, with a shift of 1, P would be replaced by Q, Q would become R, and so on.

Detailed explanation-4: -Caesar Cipher. In Caesar cipher, the set of plain text characters is replaced by any other character, symbols, or numbers. Monoalphabetic Cipher. Homophonic Substitution Cipher. Polygram Substitution Cipher. Polyalphabetic Substitution Cipher. Playfair Cipher. Hill Cipher.