当路由器配置了认证方式，就会鉴别路由信息的收发方。
When the router is configured with authentication, can identify routing information sending and receiving side.
报文信息的鉴别认证可采用差错控制码、报文鉴别码与数字签名进行。
Message information may be authenticated with error-control code, message authenticated code and digital signature.
身份认证技术是能够对信息收发方进行真实身份鉴别的技术，是保护网络信息资源安全的第一道大门。
The identity authentication technology that can authenticate the identity of the sender and the receiver is very important in the security system.
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