Patent ID: 9648494
Date: 2017-05-09
CPC Classifications: H04L,H04W

Claim:
1. A method of protecting a payload sent between a client device and a Network Application Function node in a communications network, the method comprising: at one of the client device and the Network Application Function node, determining that no existing Security Association identifier between the client device and the Network Application Function node is locally available; obtaining an identifier embryo; constructing a Security Association identifier using the identifier embryo; and protecting a payload sent between the client device and the Network Application Function node using a Security Association associated with the constructed Security Association identifier, wherein the identifier embryo includes a Push Temporary Identifier (P-TID) embryo, the method comprising the client device and the Network Application Function node independently calculating a P-TID by performing a one-way function on the P-TID embryo and a value known to both the client device and the Network Application Function node.