CSF Practice 3 - Chapter 4

Provide ONE method of creating ciphertext

(a)  

List TWO types of encryption algorithm and provide ONE encryption standard for each class.

Answer explanation

Symmetric

Any 1 example below,

• Triple Digital Encryption Standard / 3DES

• International Data Encryption Algorithm / IDEA

• Advanced Encryption Standard / AES

Asymmetric

Any 1 example below

• Rivest_Shamir-Adleman / RSA

• Diffie-Hellman

• ElGamal

• Elliptic Curve Cryptography / ECC

A product consultant had recommended to his team an algorithm that is used in New Technology File System (NTFS). The U.S. government uses the same algorithm to protect classified information.Identify the algorithm recommended by the product consultant.

(a)  

A product consultant had recommended to his team an algorithm that is used in New Technology File System (NTFS). The U.S. government uses the same algorithm to protect classified information. Name the type of encryption used for the algorithm.

(a)  

A product consultant had recommended to his team an algorithm that is used in New Technology File System (NTFS). The U.S. government uses the same algorithm to protect classified information. Describe the encryption that you have named

Answer explanation

use the same pre-shared key, sometimes called a secret key pair, to encrypt and decrypt data.

Both the sender and receiver know the pre-shared key before any encrypted communication begins.

List TWO types of encryption algorithm

(a)  

State THREE differences between Symmetric and Asymmetric algorithm.

Answer explanation

Symmetric:

more efficient, handle more/larger data

more problematic

harder to manage

Asymmetric:

More efficient, small amount data

More secure

List TWO protocols that uses asymmetric key algorithms.

Answer explanation

Any 2,

Internet Key Exchange / IKE

Secure Socket Layer / SSL

Secure Shell / SSH

Pretty Good Privacy / PGP

Describe 3 characteristics of Virtual Private Network (VPN)

Answer explanation

private network

uses a public network/internet

create secure channel

connects two endpoints/remote offices

State THREE types of access controls

(a)