Patent ID: 9317688
Filing Date: 2016-04-19
CPC Classification: G06F,H04L,H04W

Claim Text:
1. A method for machine-to-machine (M2M) service bootstrapping of an M2M device, the method comprising: receiving, at the M2M device, a first message from a network M2M node, the first message comprising a service provider (SP) identifier (ID) and at least one of a usage type, an M2M service bootstrap function (MSBF) ID, a network service capability layer (NSCL) ID, and a target device ID; receiving, at the M2M device, a second message from the network M2M node after receiving the first message from the network M2M node; identifying whether the second message includes a service provider assigned device ID; and generating, by the M2M device, an M2M root key based on the SP ID and the service provider assigned device ID if the second message from the network M2M node includes the service provider assigned device ID based on a result of the identification, wherein the M2M root key is used for mutual authentication between the M2M device and a service provider corresponding to the SP ID, and wherein the generating of the M2M root key comprises generating, if the service provider assigned device ID is not assigned by the network, the M2M root key based on an extended master session key (EMSK), a predetermined string, the SP ID, and the M2M device's own ID.