Key negotiation method and equipment in mobile communication

Abstract

An embodiment of the invention provides a key negotiation method and key negotiation equipment in mobile communication. The key negotiation method comprises the steps of: generating a pseudo identifier at a mobile equipment side according to a shared password and mobile equipment identifiers in real time, transmitting the pseudo identifier and a group identifier of a mobile equipment group to a server side, acquiring the mobile equipment identifiers by means of the server side according to the pseudo identifier, generating an encrypted key according to random numbers, generating a session keyaccording to the mobile equipment identifiers, the group identifier, a server identifier of the server, an acquired mobile management entity identifier and the encrypted key, returning the server identifier and the mobile management entity identifier to the mobile equipment side, and generating a session key by means of the mobile equipment side through using an algorithm the same as the server side. Through generating the pseudo identifier at the mobile equipment side and using the pseudo identifier for interaction in the signal interaction process, the security of the signal interaction process is improved; and the mobile equipment side and the server side generate the session keys just by adopting the plurality of the identifiers and the random numbers, and save the computational overhead and communication overhead.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of communications, and more specifically, to a method and device for key agreement in mobile communications. Background technique [0002] With the continuous development of mobile communications, higher requirements have been put forward for information security in mobile communications. From 2G to 3G, security features and security services have been gradually improved. In order to further promote 3G technology, improve spectrum efficiency, reduce delay and optimize packet data, LTE (Long Time Evolution), a long-term evolution of 3G system, came into being. [0003] Machine Type Communications (Machine Type Communications, MTC) is an important application of the Internet of Things, which has a huge market and application prospects. The MTC network model in the LTE network is as follows: figure 1 As shown, multiple mobile devices (MTCD) communicate with the Mobility Management Ent...

AI Technical Summary

Problems solved by technology

[0004] However, the current session key negotiation method between MTCD and HSS, on the one hand, needs to generate a large amount of signaling, resulting in excessive calculation and communication overhead; on the other hand, during the session key negotiation process, the session key It is easy to be attacked and stolen, leading to security risks

Images