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Interference method based on adaptive random-relayed TCP/IP network hidden-time signal path

A random delay, IP network technology, applied in the field of channel interference, can solve the problems of data packet retention, large maximum delay, single restriction conditions, etc., to achieve the effect of preventing leaking communication quality, ensuring communication quality, and increasing interference function

Inactive Publication Date: 2010-12-29
SHANGHAI JIAOTONG UNIV
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  • Summary
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Problems solved by technology

The disadvantage of this method lies in the singleness of its restrictive conditions, and the interference scheme obtained by considering the restrictive conditions alone is not practically usable
When only buffer constraints are considered, the interference scheme given by this method may cause some data packets to stay permanently in the interference gateway, resulting in an infinite maximum delay and seriously affecting normal network services

Method used

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  • Interference method based on adaptive random-relayed TCP/IP network hidden-time signal path
  • Interference method based on adaptive random-relayed TCP/IP network hidden-time signal path
  • Interference method based on adaptive random-relayed TCP/IP network hidden-time signal path

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Embodiment Construction

[0018] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings: this embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following the described embodiment.

[0019] First describe the environment and constraints in which the interference is performed, in the case of figure 1 In the shown network covert time channel communication model, the high-density subject (High) modulates sensitive information on the time sequence of data packets sent. This sequence can be represented by the arrival flow of data packets. The arrival flow is relative to the covert communication channel As far as the passing interference gateway (Mitigation Gateway) is concerned. By decoding the time characteristics of the data packets leaving the flow...

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Abstract

The invention relates to an interference method based on adaptive random-relayed TCP / IP network hidden-time signal path, which belongs to the technical field of network safety. Network data packets are stored in an interference gateway buffering area and data packets in the queue are sequentially transmitted; every data packet on the first position of the queue is randomly delayed, the maximum value of the random delay is influenced by the length of the queue, when the queue is long and the network is crowded, the maximum value of the random delay is reduced, and the transmitting speed of therandom delay is accelerated, thus, the method has adaptability on the network flow. The invention effectively interferes the network hidden-time signal path, reduces the capacity of the signal channel, and guarantees a certain network service quality so as to be used for the interference of the hidden-time signal path of the actual network system.

Description

technical field [0001] The present invention relates to a channel interference method in the technical field of telecommunication, in particular to a TCP / IP network concealment time channel interference method based on adaptive random delay. Background technique [0002] In network covert time channels, sensitive information to be sent is modulated to the rate of the sequence of packets sent, rather than the packets themselves, so sensitive information can be transmitted secretly. This channel transmits information indirectly and covertly by manipulating the sending time of data packets, so it can bypass the normal network communication supervision mechanism and bring harm to the privacy of information, information system access control and auditing. It is precisely because of the various hazards brought about by network covert time channels that multi-level information systems and networks that process sensitive information need to interfere and control network covert time ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/56H04L29/06H04L12/861
Inventor 潘理黄霄鹏訾小超姚立红
Owner SHANGHAI JIAOTONG UNIV
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