US 11,997,076 B2
Systems and methods for establishing secure communication in an electric power distribution system
Colin Gordon, Katy, TX (US); and John W. Knapek, Bothell, WA (US)
Assigned to Schweitzer Engineering Laboratories, Inc., Pullman, WA (US)
Filed by Schweitzer Engineering Laboratories, Inc., Pullman, WA (US)
Filed on Aug. 25, 2020, as Appl. No. 17/001,896.
Prior Publication US 2022/0070155 A1, Mar. 3, 2022
Int. Cl. H04L 9/40 (2022.01); H04L 67/12 (2022.01)
CPC H04L 63/061 (2013.01) [H04L 63/0442 (2013.01); H04L 63/0823 (2013.01); H04L 67/12 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A system, comprising:
an intelligent electronic device (IED) configured to perform operations comprising receiving a first user input and deriving a first connectivity association key (CAK) based on the first user input; and
a gateway configured to perform operations comprising:
receiving a second user input;
deriving a second CAK based on the second user input;
identifying the first CAK of the IED;
establishing an adoption link with the IED based on a match between the first CAK and the second CAK;
generating a third CAK; and
distributing a copy of the third CAK to the IED via the adoption link to establish a Media Access Control security key agreement (MKA) connectivity association with the IED.