US 12,003,621 B2
Method for managing keys of a security group
Sven Kerschbaum, Fürth (DE); Stephan Höme, Schwabach (DE); Thomas Fischer, Erlangen (DE); and Jung Konstantin, Weisendorf (DE)
Assigned to SIEMENS AKTIENGESELLSCHAFT, Munich (DE)
Appl. No. 18/020,328
Filed by Siemens Aktiengesellschaft, Munich (DE)
PCT Filed Jul. 6, 2021, PCT No. PCT/EP2021/068610
§ 371(c)(1), (2) Date Feb. 8, 2023,
PCT Pub. No. WO2022/033771, PCT Pub. Date Feb. 17, 2022.
Claims priority of application No. 20190195 (EP), filed on Aug. 10, 2020.
Prior Publication US 2023/0231700 A1, Jul. 20, 2023
Int. Cl. H04L 9/08 (2006.01); H04L 9/32 (2006.01)
CPC H04L 9/0825 (2013.01) [H04L 9/3228 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A method of adding a new publisher to a security group comprising at least one first publisher and at least one subscriber, the method comprising:
a) receiving a key request for keys for the new publisher, the key request comprising at least one credential associated with the new publisher and a key parameter index indicative of a bandwidth of the new publisher, the at least one first publisher and the new publisher being configured to publish messages utilizing at least one key associated with the security group;
b) modifying a lifetime value of the at least one key of the security group based on the key parameter index of the received key request, an expiry of the at least one key being based on the lifetime value of the at least one key; and
c) transmitting the at least one key and the modified lifetime value of the at least one key to the new publisher, the new publisher being configured to publish at least one message utilizing the at least one key prior to the expiry of the at least one key.