7.2 Cryptography Implementations

Question 1

Hybrid cryptosystem

Answer 1

A hybrid cryptosystem combines the efficiency of symmetric encryption with the convenience of asymmetric encryption.

Question 2

Digital signature

Answer 2

A digital signature is a combination of asymmetric encryption and hashing values. A signature provides confidentiality, integrity validation, strong authentication, and non-repudiation.

Question 3

Hashing

Answer 3

The process of using an algorithm to convert data to a fixed-length key called a hash.

Question 4

Trusted Platform Module

Answer 4

TPM is a hardware chip on the motherboard that can generate and store cryptographic keys.

Question 5

Hardware security module
(HSM)

Answer 5

A hardware security module (HSM) is a piece of hardware and associated software/firmware that is connected to a computer system to provide cryptographic functions.

Question 6

How can cryptography support the goals of information security?

Question 7

Why is reusing encryption keys considered a weakness?

Question 8

What is a digital signature? What benefits does it provide?

Question 9

What are the three main hashing algorithms in use today?

Question 10

What functionality does a Trusted Platform Module (TPM) chip provide?