Abstract
In the physical isolation network, users usually adopt the one-way transmission system to transmit data from low confidence network to high confidence network. But due to the one-way strictly, one-way transmission system can’t transmit the feedback message from high to low confidence network. What’s more, there are some imperfections in the SMS feedback mechanism and artificial feedback mechanism. Aiming at this issue, we put forward and introduce an improvement feedback mechanism based on the artificial feedback mechanism and the two dimensional bar code, at the same time , we illustrate the advantage of the design and implementation about our mechanism.
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