Secure network coding method for optical networks based on source information encryption

Abstract

An optical network security network coding method based on information source information encryption, which specifically includes: using the method of information source information encryption to realize the confidentiality of the network, and using the method of integrity check code to realize the function of network integrity inspection. In source information encryption, only a small part of the information needs to be encrypted to realize the confidentiality function of the network, which indirectly reduces the amount of information that needs to be encrypted. The verification function in the optical network is realized by means of the sink checking the integrity and the source retransmitting.

Description

technical field [0001] The invention relates to the communication field, in particular to an optical network security network coding method based on information source information encryption. Background technique [0002] Since Shannon proposed the maximum flow minimum cut theorem, the realization of the maximum flow of the network has been the direction of the researchers efforts. In the traditional multicast mode, the intermediate nodes only have the function of store and forward. It was not until the proposal of network coding that this situation changed. situation. Network coding can not only increase the maximum flow of the network, but it is also found in the research that network coding has broad prospects in network security. [0003] For the traditional multicast method, if an eavesdropper has the opportunity to eavesdrop on a certain channel of information in the network, it can restore the original data based on the eavesdropped information, because such informat...

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Problems solved by technology

[0004] There are many implementations of secure network coding, but these implementations still have the following problems: the use of cryptographic encryption methods to achieve network confidentiality, this method can certainly achieve the effect of confidentiality, but the amount of encryption required is too large , a huge amount of calculation will be generated in the process of encryption and decryption; use non-encryption means to achieve confidentiality, this method needs to limit the eavesdropper's eavesdropping ability to certain links, for eavesdroppers with strong eavesdropping ability, use Non-encrypted methods to ensure the confidentiality of the network are dangerous

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