Authentication

Question 1

Name the types of authentication

Answer 1

Machine by Machine Authentication
User by Machine Authentication

Question 2

Name the four authentication techniques

Answer 2

Password-Based
Token-Based
Biometric-Based
Multi-Factor Authentication

Question 3

Name pros and cons of password based authentication

Answer 3

Pros:
-no hardware is required
Cons:
- short and memorable passwords can easily be guessed
- long and random password are hard to remember
- passwords can be intercepted

Question 4

Pros and Cons of Token-Based Authentication

Answer 4

Pros:
- scalability
Cons:
- Physical Tokens can easily be stolen or lost
- Tokens don’t confirm who is using the token, only that the token is being used
- tokens can be forged or copied

Question 5

Name 2 Example of Physical tokens

Answer 5

Bank cards
Access Cards
Door Keys
Smart Cards

Question 6

Name and describe the two types of Tokens

Answer 6

-secure storage : stores a password, eg bank card, garage door remote
- passcode generator : created a one time use pass with a time-synchronisation or challenge-response

Question 7

describe Biometrics-based authentication

Answer 7

Allows access based off distinguishing biometrics

Question 8

What are the types of characteristics for biometric authentication

Answer 8

• Behavioural : way you walk, way you write
• Physiological : finger prints, retina scans

Question 9

Advantages of biometric authentication

Answer 9

• Can’t really be shared, copied or stolen
• rarely lost

Question 10

Disadvantages of biometric authentication

Answer 10

Complicated tech is needed
Specialised hardware is needed
High cost

Question 11

Problems and potential solution of biometric authentication

Answer 11

Problem
- false positives and false negatives
- equipment can be sabotaged
Solutions
- multimodal architecture : two systems running concurrently and comparing results