Patent ID: 8300830
Filing Date: 2012-10-30
Classification: H04L

Abstract:
1. A method for providing secure communication in a system including a group management device, at least one subgroup management device, and at least one receiving device, wherein at least one subgroup management device is associated with at least receiving device, the method comprising the steps of: establishing a temporary secure communication path between the group management device and the at least one receiving device; generating a key chain corresponding to the at least one receiving device, wherein the key chain includes a predetermined number of keys and having each key related to at least another key by at least one inverse of a one-way function, wherein the predetermined number of keys is agreed upon by the group management device and the at least one receiving device; storing the generated key chain at the group management device and the at least one receiving device; tearing down the temporary secure communication path subsequent to the storing of the generated key chain; providing at least one key in the generated key chain to the at least one subgroup management device associated with the at least one receiving device; using the generated key chain, authenticating the at least one subgroup management device; and establishing another secure communication path between the group management device and the at least one subgroup management device and the at least one subgroup management device and the at least one receiving device associated with the at least one subgroup management device.