Patent ID: 8005224

Claim:
A method for establishing a new security association between a mobile node and a network source, the method comprising: a first trust authority creating a first token comprising a security association between a network source and a mobile node, the first token being encrypted using a first key known to the mobile node and the first trust authority within a home network associated with the mobile node; the first trust authority creating a second token comprising the security association between the network source and the mobile node, the second token being encrypted using a second key known to the first trust authority and a second trust authority associated with the network source; and sending the first token and the second token to the second trust authority using a chain of trust infrastructure, wherein the network source uses a third key known to the second trust authority and the network source to decrypt a third token, the third token comprising the security association between the network source and the mobile node, and wherein the network source uses the security association between the network source and the mobile node to create a media independent handover (MIH) message for the mobile node.