基于多协议纵向协同构建隐蔽信道设计方法OA

In allusion to the problems existing in the design of existing covert channels,such as the success rate of secret information recovery being easily affected by various factors,the inability of the receiver and the sender to interact continuously,and poor robustness,a method of covert transmission channel construction based on the IP protocol and using the TCP protocol is proposed,and two implementation approaches are designed respectively:static and dynamic.In both methods,the IP protocol and TCP protocol are used to transmit secret information,verify it by means of built-in check algorithms,and restore the network quadruple based on the underlying logic,so as to realize continuous interaction between the sender and the receiver.The dynamic method can adjust the storage capacity of secret information in a single data packet in real time according to network conditions,breaking the traditional fixed-capacity transmission mode and increasing the difficulty for detectors to restore the secret information.The propose method can provide new ideas for the construction and implementation of covert channels.