Week 6

Question 1

What is Hashing?

Answer 1

Hashing used either to hide the original contents of a

message or to check the integrity of data

Question 2

List 2 Characteristics of Hashing

Answer 2

• Must be difficult to retrieve the original text from the hash value
• Must be hard to find two different inputs of any length that result in the same hash

Question 3

List 3 Popular hash functions

Answer 3

1 MD
2 SHA
3 RIPEMD

Question 4

Name 3 uses of hashes

Answer 4

1) Securely store passwords
2) Generate signature for files, used to check if they have been changed
3) Used to identify that a file/certificate has not been changed

Question 5

Name 3 Issues with Hashing

Answer 5

1 Collision
2 Similar context
3 Full context

Question 6

Whats the Computer Misuse Act 1990?

Answer 6

Criminalises unauthorised access to computer material

Question 7

Whats the The Fraud Act 2006 ?

Answer 7

The Fraud Act defines fraud in three ways: False representation, Failing to disclose information, Abusing power

Question 8

Whats the The Investigatory Powers Act 2016?

Answer 8

Governs use of surveillance by public bodies such as police and intelligence services

Question 9

What is a Firewall?

Answer 9

A barrier that blocks dangerous communication from spreading across a network.

Question 10

What is a VPN?

Answer 10

A means of creating a private network across an untrusted network such as the internet

Question 11

What is GDPR?

Answer 11

A regulation by which the European Government have strengthened and unified data protection for EU residents.

Question 12

Name 3 areas of concern relating to GDPR laws?

Answer 12

• Marketing
• Legal
• IT

Question 13

What are checksums used or in cryptography?

Answer 13

Provide privacy, prove identity and show integrity