Patent ID: 9608971
Date: 2017-03-28
CPC Classifications: H04L,H04W

Claim:
1. A method in a first server operating as a first Network Application Function (NAF), said method comprising establishing a secure connection between the first server and a second server operating as a second NAF, said first and second servers cooperating to provide a service to a user terminal (UT), and said method comprising: receiving a message from the second server, requesting establishment of a security relationship between the first server and the second server, the message including an indication of an identity of a context of a bootstrapping protocol that is associated with a Subscriber Identity Module (SIM) of the UT; sending a request to a bootstrapping server responsive to receiving the message from the second server, the request including an indication of the identity of the context of the bootstrapping protocol and requesting establishment of the security relationship between the first and second servers; and receiving, from the bootstrapping server, a shared key or information from which the shared key can be derived, said shared key for use in establishing the security relationship with the second server, for securing communication between the first and second server for cooperatively supporting the service to the UT, and said shared key based on the context of the bootstrapping protocol and, therefore, associated with the SIM of the UT.