Patent ID: 11968581
Assignee: SIGNIFY HOLDING B.V.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 11:
12. The method of claim 11, wherein the second procedure comprises the steps of the second supplicant:
sending to the authenticator a request comprising at least a first nonce, a first frame counter, and a first message integrity code derived based on the pairwise transient key;
receiving from the authenticator a confirmation comprising at least a second nonce, a second frame counter, and a second message integrity code derived from the new pairwise transient key;
extracting the second nonce from the confirmation received;
deriving a local new pairwise transient key based on the second nonce extracted;
generating a local message integrity code based on the locally derived new pairwise transient key;
verifying the second frame counter and the second message integrity code against the first frame counter and the local message integrity code;
adopting the locally derived new pairwise transient key as the new pairwise transient key, upon successful verification of both the second frame counter and the second message integrity code.