SECURITY

Question 1

Purpuse of asymetric key cryptography

Answer 1

It is to provide better security by using a private and public key. One of the keys is used to encrypt the message and the corresponding to decrypt the message

Question 2

Benefits of quantum cryptography

Answer 2

-Longer keys can be used
-Eavesdropping can be detected.
-Virtually unhackable.

Question 3

Drawbacks of quantum cryptography

Answer 3

-High cost of purchasing / maintaining equipment required.
-Currently only works over relatively short distances.
-Error rates are relatively high as technology is still being developed.

Question 4

Purpose of quantum cryptography

Answer 4

-To produce a virtually unbreakable encryption system
-Using the laws of quantum mechanics / properties of photons.
-Because the properties of photons change.
-To protect the security of data transmitted over fibre optic cables.