US 12,273,449 B2
Electronic device and method of using pairwise master key
Chounjong Nam, Suwon-si (KR); Junhak Lim, Suwon-si (KR); and Seongsu Choi, Suwon-si (KR)
Assigned to SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed by SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed on Jul. 12, 2022, as Appl. No. 17/863,085.
Application 17/863,085 is a continuation of application No. PCT/KR2022/008100, filed on Jun. 9, 2022.
Claims priority of application No. 10-2021-0104383 (KR), filed on Aug. 9, 2021.
Prior Publication US 2023/0039335 A1, Feb. 9, 2023
Int. Cl. H04L 29/00 (2006.01); H04L 9/08 (2006.01); H04W 12/06 (2021.01)
CPC H04L 9/088 (2013.01) [H04W 12/06 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An electronic device comprising:
at least one wireless communication module configured to transmit and receive a wireless signal;
a memory configured to store instructions; and
at least one processor operatively connected to the at least one wireless communication module and the memory, the at least one processor being configured to execute the instructions to:
based on an attempt to connect to an access point (AP), identify whether a pairwise master key security association (PMKSA) for the AP, generated based on to a previous connection of the electronic device to the AP, is present, and
based on identifying that the PMKSA is present, determine whether to reuse a pairwise master key (PMK) stored in the PMKSA by comparing a lifetime of the PMK with a margin time in which a reuse of the PMK is guaranteed,
wherein the margin time indicates a time period during which the PMK stored in the PMKSA does not expire.