Question

what are the techniques of crptograhy?
Discuss crptograhy as used in computer security

Answer 1

Answer:

Cryptography is the study of secure communications techniques that allow only the sender and intended recipient of a message to view its contents. ... When transmitting electronic data, the most common use of cryptography is to encrypt and decrypt email and other plain-text messages.

Caesar cipher, monoalphabetic cipher, homophonic substitution cipher, Polyalphabetic Cipher, Playfair cipher, rail fence, One-time pad, hill cipher are some of the examples of cryptography techniques.