Patent ID: 7984486
Filing Date: 2011-07-19
Classification: H04L,H04W

Abstract:
1. A method of utilizing Generic Authentication Architecture for Mobile IP key distribution in a packet data network having a proxy mobile node acting as a proxy for a mobile terminal, the method comprising: performing a generic authentication architecture bootstrapping procedure between the mobile terminal and a bootstrapping server function resulting in said mobile terminal and said bootstrapping server function each acquiring at least a bootstrapping transaction Identifier associated with said mobile terminal and a corresponding shared key; deriving, with said mobile terminal, a network application function specific key based on at least said acquired shared key and an identifier of said network application function; sending said bootstrapping transaction identifier, the corresponding shared key, and the network application function specific key from said mobile terminal to said proxy mobile node; sending a request message for Mobile IP registration from said proxy mobile node to a home agent on behalf of said mobile terminal, said request message including said bootstrapping transaction identifier and an identifier of said proxy mobile node; verifying the registration message in said home agent with the use of a network application function specific key obtained from said bootstrapping server function or a network application function; and authenticating said request message for Mobile IP registration with said proxy mobile node on behalf of said mobile terminal by verifying said message authentication code with said obtained network application function specific key.