Patent ID: 8681993
Filing Date: 2014-03-25
Classification: H04L,H04W

Abstract:
1. A method performed by a first communication device in an ad-hoc network, the method comprising: the first communication device identifying a first trust group associated with a first level of trust, the first trust group including a first subset of communication devices in the ad-hoc network; the first communication device identifying a second trust group associated with a second, lower level of trust, the second trust group including a second subset of communication devices in the ad-hoc network; the first communication device receiving, from a second communication device in the first trust group, a first cryptographic group key generated by the second communication device; the first communication device receiving, from a third communication device in the second trust group, a second cryptographic group key generated by the third communication device; based on the first level of trust associated with the first trust group, the first communication device designating the first cryptographic group key to be used for both encrypting and decrypting communications with the second communication device; and based on the second, lower level of trust associated with the second trust group, the first communication device designating the second cryptographic group key not to be used for encrypting communications with the third communication device.