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提出一种基于公钥体制的，能够对全球移动网络中移动用户进行认证的协议．此协议的认证过程仅在移动用户和访问网络之间发生，访问网络可独立完成对移动用户的认证．当移动用户在归属网络注册时，归属网络向移动用户分发归属网络证明（ＨＮＣ），移动用户在ＨＮＣ中加入其私钥生成漫游认证密钥（ＲＡＫ）；当移动用户漫游时，移动用户向访问网络提交由ＲＡＫ生成的代理签名，访问网络可通过验证此签名来认证移动用户及其归属网络．
A protocol based on public key system is proposed to authenticate mobile users in the global mobile network. This protocol authentication process occurs only between mobile users and visited networks, and access networks can independently authenticate mobile users. When the mobile subscriber registers with the home network, the home network distributes the home network certificate (HNC) to the mobile subscriber, and the mobile subscriber joins his private key to generate a roaming authentication key (RAK). When the roaming subscriber roams, the mobile subscriber accesses The network submits a proxy signature generated by the RAK, which authenticates the mobile user and its home network by verifying this signature.