6441-w8-revision

If a type 1 error is someone who isn't you unlocking your phone with a fingerprint reader, what's the corresponding type 2 error?

• Someone guessing your pin

• The money they transfer themself while in your phone

• Someone who isn't you getting in using face ID

• Getting locked out of your phone when it can't recognise your fingerprint

• A

• B

• C

• D

Alice wants to send a private message to bob. What's the first step using RSA?

• Alice encrypts the message using her private key

• Alice encrypts the message using her public key

• Alice encrypts the message using Bob's public key

• Alice encrypts the message using Bob's private key

What is NOT an example of security by obscurity

• Hiding a key under a rock

• Security guard by the access card readers in the entrance of a building

• making it illegal to publish the source code for COVID tracing softwarM

• Obfuscated code

How many of these password hints are helpful?

- Passwords should expire every 6 months

- Complexity requirements - e.g. one capital letter, number, symbol

- Passwords should be compared agains breach databse and rejected if there is a match

• 0

• 1

• 2

• 3

A MAC is designed to provide

• Neither Confidentiality nor Integrity

• Integrity but not Confidentiality

• Confidentiality but not Integrity

• Confidentiality and Integrity

Given a cryptographic hash function, which is most likely easier:

• Finding two different messages with identical hash values

• Given the hash of a message, finding the original message

• Given a hash value, finding a message which hashes to that val

• Containing Horses

How many bits of security does a padlock with 3 pins have?

• 3

• 8

• 10

• 1000

How many bits to represent the decimal 2000?