摘要
为了更好地使隐蔽信道在容量、可靠性、抗检测性方面取得一个合适的平衡,提出一种基于HTTP请求行为的隐蔽信道HRCC(Combined Covert Channel Based on HTTP Requests)。将HTTP请求动态分配在多个HTTP流上,利用数学组合的方式传输隐蔽信息,且通过模拟正常的HTTP流使得信道的抗检测性大大增强。同时TCP协议的可靠传输使得传输过程不会受到网络状况的影响,从而保证了信道的鲁棒性。最后通过实验结果证明了该新型隐蔽信道具有很强的实用性,而且在传输速率、传输正确率和抗检测性方面均优于传统基于HTTP的隐蔽信道。
To achieve a proper balance in capacity,reliability and undetectability of the covert channel better,we proposed an HTTP request behaviour-based covert channel. We dynamically assigned the HTTP requests onto multiple HTTP flows and transmitted the hidden information using a way of mathematics combination. Furthermore,by simulating normal HTTP flows we made the undetectability performance of the channel be greatly enhanced. At the same time,the reliable transmission of TCP protocol ensures the transmission process not to be affected by the influence of network status,which guarantees the robustness of the channel. At last we proved through experimental result that the new covert channel has high availability,and is superior to the traditional HTTP-based covert channels on the aspects of transmission rate,transmission accuracy and undetectability.
出处
《计算机应用与软件》
CSCD
2016年第11期269-272,281,共5页
Computer Applications and Software
基金
国家自然科学基金项目(61170250
61103201)
中央高校基本业务费专项资金项目(30920140121006)
关键词
隐蔽信道
HTTP请求
数学组合
Covert channel
HTTP requests
Mathematical combination
