Key agreement method for identity-unpaired wireless network cross-domain handover authentication

Abstract

A key agreement method based on identity-unpaired wireless network cross-domain handover authentication. Reduce the computing cost of the user; in the stage of authenticating the user's identity, the home domain authentication server calculates the shared key with the user, which is consistent with the shared key generated by the user, and replaces the bilinearity in the calculation of the shared key by the home domain authentication server pair operation. The method improves the efficiency of handover authentication by means of no bilinear pairing operation between the user and the home domain authentication server. In the key negotiation phase, the session key negotiated between the user and the authentication server in the foreign region includes not only the temporary private key of both parties, but also their respective long-term private keys. The security of the key is guaranteed, effectively resisting the attack of temporary private key leakage.

Description

technical field [0001] The invention relates to a key negotiation method for identity-unpaired wireless network cross-domain handover authentication. Background technique [0002] In a wireless network, seamless and secure handover of users across domains is one of the important services, that is, when a user moves from the home domain to a foreign domain, the connection can be maintained without restriction. In order to achieve secure handover, the authentication server in the foreign region needs to authenticate the user's identity and negotiate the session key. However, since the authentication server in the foreign region does not have the user's registration information, the authentication of the mobile user is realized through the participation of the authentication server in the home region, which constitutes an authentication key negotiation process involving three parties. On the basis of secure switching authentication and key negotiation, it should also provide u...

AI Technical Summary

Problems solved by technology

However, for the situation where the attacker uses his own ability to obtain the temporary private key of both parties, the attacker can generate the session key negotiated between the user and the authentication server in the foreign region, so this method is difficult to resist the temporary private key disclosure attack initiated by the attacker