Patent ID: 11895152
Assignee: SCHWEITZER ENGINEERING LABORATORIES, INC.
Field: Digital communication (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 13:
14. A system, comprising:
a first intelligent electronic device (IED) configured to communicate data via a security association key (SAK) and configured to perform operations comprising:
converting a stored connectivity association key (CAK) to copy of an SAK during a recovery mode;
using the copy of the SAK to communicate data via an initial media access control security (MACsec) communication link; and

a second TED configured to perform operations comprising:
transmitting, during operation in a recovery mode of the first TED, a request to the first TED for an available SAK;
receiving the copy of the SAK from the first TED in response to the request;
transmitting an indication to the first TED regarding usage of the copy of the SAK to communicate data via a MACsec communication link instead of the initial MACsec communication link using the SAK instead of the copy of the SAK.