由此实现了双向的身份验证，同时保证了服务器和用户的安全，可以有效的防止冒充攻击、重放攻击、小数攻击。

The two-way identity authentication is implemented and the security of the host and the users is assured, which can keep them from imitate attack, replay attack and small number attack.

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提出并实现了一种双向挑战握手及下线验证的改进方案，并用一种改进的BAN逻辑对其进行了形式化分析。

However, an improvement proposal called Dual-way Challenge Handshake and Logoff Authentication was proposed, and a formal analysis was done on it with an improved BAN logic.

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文中分析了推挽全桥双向DC/DC变换器的两种工作模式，并进行了仿真分析，理论上验证了其实现能量双向流动的可行性。

This paper analyzes the two operation modes of the push-pull full-bridge bi-directional DC /DC converter and conduct a simulation analysis. In theory, the two-way flow of energy is possible.

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