An Active Network Stream Digital Watermarking Method Based on Double Redundancy

Abstract

The idea of ​​double redundancy in the active network stream digital watermarking method based on double redundancy of the present invention means that each watermark Wi corresponds to a large time interval Ri, and each large time interval discretely contains r A small time interval g, the watermark Wi will be repeatedly embedded in r different small intervals g; at the same time, each g interval contains multiple data packet sequences, and finally achieve the embedding watermark by manipulating the data packet time sequence Objective: By adopting the double redundancy method, the stability of the embedded watermark in the network propagation process can be effectively improved, the effective detection rate of the watermark at the receiving end can be improved, and the false detection rate can be reduced. Adopting the dual redundancy-based active network flow digital watermark embedding method of the present invention can effectively ensure that the watermark embedded at the sending end can reach the receiving end more safely, improve the detection efficiency of the watermark at the receiving end, and effectively judge the communication relationship between the sending end and the receiving end Provide evidence.

Description

technical field [0001] The invention relates to the field of active network flow watermark in digital watermark, in particular to a method for realizing watermark embedding by operating time series by utilizing double redundancy, and an active network flow watermark embedding and extracting system. Background technique [0002] In recent years, with the explosive development of the Internet, network security issues have become increasingly serious, especially driven by economic interests, various network attacks have emerged one after another, causing huge losses to users. On the one hand, in order to evade detection and tracking, attackers often do not directly attack the target host, but log in to the springboard node host and use anonymous communication systems, botnets and other means to hide their real identities. On the other hand, because some criminals use anonymous communication systems to spread pornography, violence and other bad information, which seriously pollu...

AI Technical Summary

Problems solved by technology

However, this method needs to capture and inspect all network traffic, which will significantly increase the time and space overhead of network equipment. Its offline analysis mode also leads to recognition lag, poor real-time performance, and poor scalability. It is difficult to cope with large-scale high-bandwidth networks. environment, especially in the encrypted anonymous communication system

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