Encryption

Question 1

What are cryptographic algorithms?

Answer 1

• Sequence of rules in order to encrypt or decrypt code to protect data from unauthorised access

Question 2

What is encryption used for?

Answer 2

• Allow communication of two parties, but with coded messages so that third parties cannot understand the communications (e.g. a hacker)

Question 3

What is Caesar Cipher?

Answer 3

• A type of encryption which involves letters being shifted along a certain number of places along the alphabet
  (Essentially, it shifts the alphabet “shift cipher”)

Question 4

Other than classifying data, what other roles does modern encryption serve?

Answer 4

• Authentication of who sent the data

- Integrity: Proof that the data has no be tampered with

Question 5

Why is encryption helpful in networks:?

Answer 5

• Most data is transmitted in clear text in a network, meaning anyone can see it, unless you encrypt it