Authentication method based on shared group key in machine type communication (MTC)

Abstract

The invention discloses an authentication method based on a shared group key in machine type communication (MTC), mainly solving the defect of lack of an authentication mechanism based on an MTC group in the existing standard. The authentication process comprises the following steps that: (1) a home network (HN) generates a shared group key (GK), and writes the generated GK into a universal subscriber identity module (USIM) or distributes the generated GK as part of a machine to machine (M2M) communication identity module (MCIM) to all machinery equipment (ME) in the group; (2) the HN sends authentication data generated based on the GK to a service network (SN); (3) the SN performs mutual authentication on the ME in the group by using the obtained authentication data; and (4) when the relation among the group members is changed, the HN broadcasts a key updating notification message to all the ME belonging to the group, and realizes update of the shared GK between the HN and the ME according to the step (1). The authentication method optimizes the signal data generated by authentication between the SN and the HN, reduces congestion of a link between the SN and the HN, and is safe, fast and suitable for fast access authentication of an ME group in MTC.

Description

technical field [0001] The invention belongs to the technical field of mobile communication network security, relates to authentication of a shared group key, can be applied to existing machine type communication, and realizes fast and safe access of machine equipment to a mobile operator network. Background technique [0002] The emergence of communication networks enables people to communicate more quickly and exchange information more smoothly; and with the rise of the Internet of Things, information can also be exchanged between things through the Internet. As the most common application form of the Internet of Things at the present stage, M2M mainly refers to the transmission of information through the "communication network" to achieve machine-to-machine or human-to-machine data exchange, that is, to realize the interconnection and intercommunication between machines through the communication network. Due to the particularity of the network, the mobile communication ne...

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Problems solved by technology

However, 3GPP did not propose an authentication mechanism based on the MTC group, and each MTC terminal belonging to the MTC group needs to complete the authentication process to the service network independently

In particular, when the service network of these MTC terminals is inconsistent with the home network, each MTC terminal will require the service network where it is located to request authentication data from the home network, which will result in frequent data exchange between the service network and the home network, resulting in their The link congestion between the network will bring a lot of authentication delays, thereby reducing the service quality of the operator's network

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