Question

Question 1: Cryptography                                                               

Cryptography, is the process of making and using codes to secure the information. The science of encryption, known as cryptology, encompasses both cryptography and cryptanalysis. Symmetric and asymmetric encryption algorithms are used in encryption and authentication. (Answer should not exceed 8 lines).

1. Explain the basic principle of cryptography?

2. Discuss on the difference between symmetric and asymmetric cryptosystems? Elaborate with a scenario or an example. (4 marks, 1 mark for indicating the difference and 2 marks for presenting a scenario)
   

c) Explain the authentication factor, and the combination of those factors, to achieve appropriate security on information
(Answer should not exceed 6 lines).
(6 marks, 3 marks for indicating the authentication factors, and 3 marks for presenting a scenario/example of using a combination of those factors)

Answer 1

Data Confidentiality, Data Integrity, Authentication and Non-repudiation are core principles of modern-day cryptography.

The basic difference between these two types of encryption is that symmetric encryption uses one key for both encryption and decryption, and the asymmetric encryption uses public key for encryption and a private key for decryption.

An authentication factor is a category of credential used for identity verification. The three most common categories are often described as something you know , something you have and something you are