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Multi-source network coding pollution defense method based on subspace attributes

A source network, subspace technology, applied in the field of information network security

Active Publication Date: 2013-06-19
BEIHANG UNIV
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Problems solved by technology

[0007] The technical problem solved by the present invention is: in order to resist the pollution attack of multi-source network coding and overcome the deficiencies of existing defense schemes, the subspace attribute of multi-source network coding is used to provide a multi-source network coding pollution defense method based on subspace attribute , reducing the computational overhead required for integrity verification and improving the security of multi-source network coding

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  • Multi-source network coding pollution defense method based on subspace attributes
  • Multi-source network coding pollution defense method based on subspace attributes
  • Multi-source network coding pollution defense method based on subspace attributes

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Embodiment Construction

[0070] A kind of multi-source network coding pollution defense method based on subspace attributes proposed by the present invention needs to solve the following three problems: first, how to establish a multi-source network coding system model based on subspace attributes; second, how to initialize pollution defense The initial state of the network in the method; third, how to use the pollution defense method based on subspace properties for message transmission and verification.

[0071] The main idea of ​​the program is:

[0072] The shared property of encoded packets in a multi-source network coding system is that they all belong to the same subspace Π X , to verify the integrity of the encoded packet by checking whether the encoded packet belongs to the subspace. Since the subspace Π X vector sum of Any linear combination of the bases is orthogonal, so, in our scheme, each node in the network is assigned some number of These vectors are called zero keys, and the int...

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Abstract

A multi-source network coding pollution defense method based on subspace attributes includes the steps: firstly, establishing a multi-source network coding system model: determining a multi-source network coding method, establishing an opponent model, establishing a trusted center node and using the network coding subspace attributes; secondly, initializing: allocating indexes, generating zero secret keys and issuing the zero secret keys; and thirdly, transmitting and authenticating messages. Multi-source secure network coding defends pollution attack by the aid of the network coding subspace attributes. Compared with a pollution attack defense method by cryptology, the defense scheme by the subspace attributes decreases computation overhead, direct detection in a network is realized, higher efficiency and safety are provided, and the multi-source network coding pollution defense method is applicable to a multi-source coding system with much more serious pollution attack problems.

Description

technical field [0001] The invention relates to a multi-source network coding pollution defense method based on subspace attributes, and belongs to the technical field of information network security. Background technique [0002] Network coding is a new technology in the field of network information transmission in recent years. It changes the transmission mode of traditional network relay nodes that only store and forward data packets, and allows relay nodes to encode data packets, so that it can achieve what traditional transmission modes cannot achieve. network capacity limit. Further research shows that network coding plays a good role in improving network throughput, balancing network load, enhancing network robustness and saving network energy consumption. Network coding allows the encoding operation of relay nodes to bring many benefits, but it also brings a serious security threat unique to network coding-pollution attacks. Pollution attacks refer to relay nodes i...

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Application Information

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IPC IPC(8): H04L29/06H04L1/00
Inventor 尚涛黄福华宋姗姗林翔赵晓杰刘建伟
Owner BEIHANG UNIV
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