特殊报文对标识字段比特随机性的影响研究

校园网出口流量存在大量的特殊报文（长度为40字节且标识字段值为0的口报文），本文运用信息论中熵的概念来定义随机测度，研究特殊报文对标识字段比特随机测度值的影响．实验结果表明，将特殊报文另行处理，则比特随机测度值不仅有明显提高而且变化幅度更小。

On Effect of Specific Messages on Identification Field Bit Randomicity

There are many specific messages(the IP messages have the length with 40 bytes and identification field value with 0) in the traffic of campus network export.This paper applies the conception of entropy in the information theory to define the random metric.It also mainly studies the effects about the specific messages on the bit random metric of identification field.The experiment result shows that if these messages are processed in another way,not only the bit random metric has noticeable improvement but also the small variation range.