华为 Quidway 系列多协议路由器，支持 PPP、FR、X25、SLIP、HDLC 等网络协议，用户可通过各种广域网线路接入 Internet 及互联互访。 路由器内置安全防火墙、NAT、RADIUS 安全认证，以及 CALL BACK 等多项互联安全防护功能；并通过 CA 认证协议的验证和 IPSec 隧道协议，在 Internet 上构建安全可靠的网络通道，基于硬件的数据加密，将保密数据加密后在隧道上传输，加密数据有可靠的保密性但牺牲了效率；非保密数据可以通过一般性安全处理在隧道上传输，

GSM Security and the protocols involves in a mobile environment authentication proce-GSM Security and the protocols involves in a mobile environment authentication process

研究物联网认证协议的说明性文章，包括即系学习通信，车联网等(a comprehensive survey of authentication protocols for Internet of Things (Io)

The MIFARE Classic is the most widely used contactless smart card chip in the world. Its communication is based on the open ISO-14443-A standard, but the entire authentication and encryption protocols are proprietary. Several academic researchers h