Method, system, device and terminal for processing secret keys

Abstract

The invention discloses a method, a system, a device and a terminal for processing secret keys, wherein the method for processing secret keys comprises the following steps: receiving a handover request message; acquiring a second secret key of a first network according to a first secret key and network parameters of the first network; and sending a handover request message containing the second secret key to a second network. By applying the embodiment of the invention to process the secret keys, when a UE is handed over among different access networks, secret keys of various access networks are ensured to be different before and after handover by inputting network parameters of the access networks in functions for educing the secret keys, thereby the same secret key is repeatedly used in the same kind of access networks, especially the problem that the same kind of access networks are also broken through as a certain access network is broken through when the access networks are handed over in a shorter period, and the network security of the access networks is improved.

Description

technical field [0001] The present invention relates to the technical field of communications, in particular to a key processing method, system, device and terminal during network switching. Background technique [0002] The existing 3GPP (Third Generation Partnership Project, Third Generation Partnership Project) wireless network is divided into two parts according to the network, the wireless access network and the core network; the wireless access network is divided into 2G access network GERAN according to the type , 3G access network UTRAN and LTE ((Long Term Evolution, Long Term Evolution) access network EUTRAN. For example figure 1 Shown is a schematic structural diagram of a 3GPP wireless network, which shows the above three wireless access networks, the core network corresponding to GERAN and UTRAN is PS (packet domain), and the core network corresponding to EUTRAN is SAE (system architecture evolution). [0003] Taking 3G access network UTRAN and LTE access netwo...

AI Technical Summary

Problems solved by technology

[0005] In the process of researching the existing technology, the inventor found that when the UE switches back and forth between different access networks, the keys in the same type of access network are completely consistent, that is, the same key will be used in the same type of access network In particular, when switching between access networks in a short period of time, the repeated use of this key will lead to when an access network is compromised, the access network of the same type is also compromised at the same time , thereby reducing the network security of the access network

Images