公开(公告)号：US20220360979A1

公开(公告)日：2022-11-10

申请号：US17314865

申请日：2021-05-07

Applicant: Texas Instruments Incorporated

Inventor： Archanaa SANTHANA KRISHNAN ,  Alexis Justine BURNIGHT ,  Ariton E. XHAFA

IPC: H04W12/041 ,  H04W12/033 ,  H04W12/0471 ,  H04W76/10

Abstract: A wireless interface includes: network formation circuitry configured to establish a wireless network between a primary node and a secondary node; data exchange circuitry configured to perform data exchanges between the primary node and the secondary node using secure sessions; and key refreshment circuitry configured to derive a new network key for the network based on a pre-shared key and a current network key concatenated with a session count. The new key is derived during at least one of the secure sessions.