当进入到查询/返回结果的阶段再认证新连接就太晚了。

When we enter the query/result stage it is too late to authenticate new connections.

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通过请求/响应协议进行多阶段认证；

Multi-stage authentication via a request/response protocol.

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第二阶段，认证取证阶段。

The second stage, certification evidence stages.

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第二阶段，认证取证阶段。

The second stage, certification evidence stages.

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