All of the following statements about public key encryption are true except:
A) Public key encryption uses two mathematically related digital keys.
B) Public key encryption ensures authentication of the sender.
C) Public key encryption does not ensure message integrity.
D) Public key encryption is based on the idea of irreversible mathematical functions.

Question

Quizplus · Accepted Answer

Public key encryption provides confidentiality, but not necessarily authentication or message integrity. Authentication can be achieved through the use of digital signatures or message authentication codes (MACs), while message integrity can be ensured through the use of a hash function.

All of the Following Statements About Public Key Encryption Are