US 12,438,728 B2
Message authentication system including a network device having security proxy support
Markus Jochim, Troy, MI (US); Thomas M. Forest, Macomb, MI (US); and Mohamed A. Layouni, Fraser, MI (US)
Assigned to GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US)
Filed by GM Global Technology Operations LLC, Detroit, MI (US)
Filed on May 24, 2023, as Appl. No. 18/322,922.
Prior Publication US 2024/0396736 A1, Nov. 28, 2024
Int. Cl. H04L 9/32 (2006.01); H04L 9/08 (2006.01)
CPC H04L 9/3242 (2013.01) [H04L 9/0825 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A message authentication system for a network, the message authentication system comprising:
a private communication system including one or more private nodes in electronic communication with one another;
a public communication system including one or more public nodes in electronic communication with one another, wherein the public nodes require message authentication; and
a security proxy device that electronically connects the private communication system to the public communication system, wherein the security proxy device includes a processing unit in electronic communication with a network device, and wherein the network device includes:
a security module integrated into the security proxy device;
a private domain including one or more unique ports and storing one or more transmit keys for authenticating messages generated by one of the private nodes of the private communication system, wherein each unique port of the private domain corresponds to one of the private nodes of the private communication system; and
a public domain including one or more public ports, wherein the one or more public ports of the public domain are in electronic communication with one or more of the public nodes of the public communication system.