A data verification method based on packet sorting ip covert channel

Abstract

The invention discloses a data verification method based on packet sorting IP covert channel, which comprises the following steps: firstly, define the sending port number m of the sending party, and the receiving port number m' of the receiving party; and then determine that the sending party can send data each time The number of bits n, the number of bits t corresponding to the time interval of data sent by the sending port, and the type of time interval value M; then establish the correspondence table between the order of data sent by m sending ports and the binary code, and the values ​​of M types of time intervals and Binary-coded correspondence table, M time interval threshold ranges and binary-coded correspondence table; then the sender transmits the secret data A, and combines the above three tables to obtain the secret data A' corresponding to the sending port sequence of the actual sent data and the actual Concealed data B' composed of the received time interval value; finally compare the secret data A' and B' to judge the verification result. The method of the invention is simple, has low data processing complexity, saves transmission bandwidth, and has good application prospects.

Description

technical field [0001] The invention belongs to the field of information hiding, in particular to a data verification method based on packet sorting IP covert channels. Background technique [0002] IP covert channel is the application of information hiding in IP data packets. IP covert channel uses the part of network data that is not originally used for data transmission to transmit secret information and realize the transmission of covert data. IP covert channels are divided into IP storage covert channels and IP time covert channels according to different data hiding methods. IP time covert channel refers to the transmission of data packets using the transmission interval of data packets. Since the data interval between data packets is inevitable in network communication, many researchers have studied how to use the interval of data packets to transmit secret data. In the IP time covert channel, by controlling the arrival time of data packets and sorting the data packet...

AI Technical Summary

Problems solved by technology

There are two deficiencies in the above-mentioned method. One is that the secret communication method of reliable packet sorting mainly improves the data retrieval speed of the mapping table and port sorting, but does not verify the correctness of the transmitted data; the other is that the UDP packet content is modified, although The authenticity of UDP data packet transmission data has been improved, but the UDP data packet content needs to be modified. If a large amount of data is transmitted, the transmission performance will be affected.

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