Question

The pairwise transient key (PTK) is derived from –

(a) Key Confirmation Key (KCK)

(b) Temporal Key (TK)

(c) Pairwise master Key (PMK)

(d) Pre-Shared Key (PSK)

I have been asked this question during an internship interview.

The origin of the question is IEEE 802.11i WLAN Security in portion Wireless Network Security and Network Security Overview of Cryptograph & Network Security

Answer 1

Correct answer is (c) Pairwise master Key (PMK)

To elaborate: The pairwise transient key (PTK) is derived from the Pairwise master Key (PMK).