Patent ID: 9084110
Filing Date: 2015-07-14
Classification: H04L,H04W

Abstract:
1. A method for transitioning a security context from a first-type serving network to a second-type serving network, comprising: generating, by a remote station, first and second session keys, in accordance with the security context, using a first information element and a first root key associated with the first-type serving network, wherein the first root key is derived based on an encryption key and an integrity key, and the first root key is an only key used for generating the first and second session keys; receiving, by the remote station, a first message from the second-type serving network, wherein the first message signals to the remote station to generate a second root key for use with the second-type serving network; generating, by the remote station in response to the first message, the second root key using the first root key and the first and second session keys as inputs; and protecting wireless communications, on the second-type serving network, based on the second root key.