摘要
HTTP协议是目前Internet上使用最广泛的协议。HTTP协议语法定义较为宽松,并且在HTTP协议定义的许多头域中存在着大量具有随机特性的部分,这就为隐蔽信道的构造提供了条件。论文提出了一种利用Date头域时间值的随机性构造隐蔽信道的思想,实现了一种在大流量载体信息下,利用低带宽隐蔽信道传输任意量隐蔽信息的方法,并分析了该隐蔽信道的性能。
The HTTP protocol is used widely in Internet, its syntax definition is definition is relatively relaxed, and a great amount of the parts with random characteristics existed in the header field defined in HTTP protocol, thus providing the condition for constructing covert channels. A new idea is proposed in the paper to construct a covert channel based on time value randomness of the Date header field, thus a method is realized, in which arbitrary hidden information can be transmitted in a large number of information carriers with low-bandwidth of covert channel, and also the performance of the covert channel is analyzed.
出处
《信息安全与通信保密》
2009年第1期73-74,77,共3页
Information Security and Communications Privacy
