CPC H04W 4/08 (2013.01) [H04W 4/90 (2018.02); H04W 12/037 (2021.01); H04W 12/041 (2021.01); H04W 12/0431 (2021.01); H04W 84/18 (2013.01)] | 10 Claims |
1. A method of key-management by a group management server in Mission Critical Systems (MCX) between an initiating party and a receiving party, the method comprising:
generating a master key, the master key being designated for an ad-hoc communication;
allocating an identifier to the generated master key; and
transmitting a transmission message signed by an initiating MCX entity including the master key to a receiving MCX entity.
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