L10/11 - Encryption and authentication

Question 1

What is Authentication?

Answer 1

The process of recognising the users identity

Question 2

Give an example of Authentication

Answer 2

Passports, some have a microchip which is a new biometric product. It stores the users photograph and personal information. This improves the security at airports.

Question 3

What does RFID stand for?

Answer 3

Stands for Radio Frequency Identification

Question 4

Where is RFID used?

Answer 4

Used in Passports and Airports

Question 5

Why is it better to use Biometrics?

Answer 5

It is more secure and cannot be forgotten unless the person changes their facial features. This is very hard to hack as everyone is very unique.

Question 6

What is needed in two-factor authentication?

Answer 6

The user needs two pieces of information in order to be verified by the requestor

Question 7

What are the three main pieces of information used in authentication?

Answer 7

• Something the user KNOWS (Password)
• Something the user HAS (Card)
• Something the user IS (Fingerprint)

Question 8

What does PKI stand for?

Answer 8

Public Key Infrastructure

Question 9

What is PKI?

Answer 9

Supports the identification of Public Encryption

Question 10

Data Encryption translates data into another….

Answer 10

…form

Question 11

What is a Private Key?

Answer 11

Used with an algorithm to encrypt and decrypt code

Question 12

What is the information and messages referred to in Encryption?

Answer 12

Plaintext

Question 13

What is used for anyone to encrypt messages?

Answer 13

Public Key

Question 14

How are the messages encrypted?

Answer 14

Cipher-Text

Question 15

What is Encryption?

Answer 15

Process of converting information into a form that can only be understood to people who have a ‘key’

Question 16

Give an example of Encryption

Answer 16

An example is Single Key Encryption which is when:

• one person writes a message and uses the key to encrypt it.
• they send the encrypted message to the person they want to read it
• the person who has received the message will then use their own key to decrypt the message and read it so it can be understood easily