Patent ID: 8411866
Filing Date: 2013-04-02
Classification: H04L

Abstract:
1. A method, comprising: receiving a Mobile IP registration request from a group member, the group member being a Mobile Node; generating a mobility binding for the group member that associates the group member with a care-of address, wherein the group member is a member of one or more groups; generating a Mobile IP registration reply, the Mobile IP registration reply identifying one or more key servers, each of the one or more key servers serving at least one of the one or more groups and being adapted for distributing group cryptography material to members of each group that is served by the corresponding key server; and sending the Mobile IP registration reply to the group member, thereby enabling the group member to obtain group cryptography material for at least one of the one or more groups from at least one of the one or more key servers to enable the group member to use the group cryptography material to securely communicate with other group members.