Patent ID: 9240980
Filing Date: 2016-01-19
CPC Classification: H04L

Claim Text:
1. A method of adding a new device to a device group, wherein the device group comprises at least one device that hosts a trusted module, wherein each device and each trusted module hosted by a device in the device group possesses device keys for encryption of messages, the method comprising: generating device keys of one or more trusted modules in the device group, device keys of one or more devices in the device group and a device key of the new device; distributing the generated device keys to each of the one or more trusted modules in the device group; distributing the generated device keys to each of the one or more devices in the device group, such that each device in the device group receives the device key of the new device, the device keys of the one or more trusted modules in the device group, and the device keys of other devices in the device group, except for its own device key; establishing a secure authenticated channel between a trusted module of the one or more trusted modules and the new device; and sending to the new device the generated device keys, except for the device key of the new device itself.