Realization method and device of attachment procedure

Abstract

The invention discloses a realization method and device of attachment procedure. The method comprises the following steps: receiving an attachment request message sent by UE through a first network element, computing a DH public key of the first network element, and sending a signature request message to the second network element, wherein the signature request message comprises the DH public keyof the first network element; receiving a signature response message sent by the second network element, wherein the signature response message comprises the DH public key of the first network elementsigned by a private key of the second network element; sending an identity request message to the UE, wherein the identity request message comprises the DH public key of the first network element signed by the private key of the second network element; if the UE successfully verifies the signature by using the public key of the second network element, receiving the identity response message sentby the UE, wherein the identity response message comprises the identity information, encrypted by the encrypted key, of the UE; and computing the encrypted key based on the own DH public key, and acquiring the identity information of the UE from the identity response message based on the encrypted key.

Description

technical field [0001] The invention relates to the attachment technology in the field of mobile communication, in particular to a method and device for realizing an attachment process. Background technique [0002] The fifth generation mobile communication technology (5G, 5 th The goal pursued by Generation Mobile Communication Technology is to meet the business needs of 2020 and beyond. Through 5G, it is expected to shape a fully mobile and fully connected society, and promote social and economic reforms in many aspects that are unimaginable today, such as production efficiency and sustainability. development etc. The properties that 5G must deliver include: greater throughput, ultra-low latency, extreme reliability, higher connection density, and higher mobility range. This enhanced performance is expected to provide the ability to operate in highly heterogeneous network environments and ensure security, trust, identity and privacy. [0003] The evolution of Long Term...

AI Technical Summary

Problems solved by technology

[0005] 1) It cannot prevent active attacks. This scheme uses the DH key exchange protocol between UE and SEAF. Since the exchanged public key has no integrity protection, this scheme is vulnerable to man-in-the-middle attacks, that is, it cannot prevent active attacks

[0006] 2) Cannot prevent association attacks, this scheme does not have any mechanism for preventing association attacks

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