公开(公告)号：US11218872B2

公开(公告)日：2022-01-04

申请号：US16452751

申请日：2019-06-26

Applicant: MOTOROLA SOLUTIONS, INC.

Inventor： Timothy Woodward ,  Chris A Kruegel

IPC: H04K1/00 ,  H04W12/04 ,  H04L9/08

Abstract: A method and Key Management Facility (KMF) for managing keys of a single user having a plurality of devices is provided. The KMF receives an Over-The-Air Rekeying (OTAR) message relating to a first device and including an interworking bit. If the interworking bit is set, the KMF retrieves a main source RSI and a Sub-RSI field from the OTAR message. If the main source RSI matches other main source RSIs from other devices, the KMF manages keys for all devices that have the same main source RSI in an identical manner.