Communication Hiding Algorithm Based on HTTP Protocol Parameters Sorting
Sheng-He Sun · Jisuanji gongcheng · 2006
One of the best covert channels providers in TCP/IP communication hiding is hypertext transfer protocol, which is the most widely usedin Internet currently. The common method of HTTP information hiding is embedding data into HTTP packets’ payload directly, which leaves someobvious signatures. On the other hand, communication hiding algorithm based on HTTP protocol parameters sorting can encode the hiddeninformation by sorting some special Keywords’ parameters emergence sequence. The algorithm will not insert additional information into thepackets. To detect the re-sorting attack, some information integrity scheme is necessary.