Method of Data Encryption in Passive Optical Network Based on Network Coding

A passive optical network and network coding technology, applied in the field of data encryption, can solve problems such as no security problem solutions

Active Publication Date: 2016-04-06
BEIJING UNIV OF POSTS & TELECOMM
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0006] At present, there is no specific detailed implementation scheme of network coding in passive optical network. Some existing researches only give a basic introduction to the realization of network coding in passive optical network. Specific Concerns for Solutions to Security Issues in Source Light Networks

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  • Method of Data Encryption in Passive Optical Network Based on Network Coding
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  • Method of Data Encryption in Passive Optical Network Based on Network Coding

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Embodiment Construction

[0047] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0048] In the embodiment of the present invention, in the actual passive optical network, the control plane signaling process is the main mode, and the data plane operation is the supplementary mode, and the specific and detailed implementation mode of the network coding in the passive optical network is described.

[0049] figure 2 It is an outline flowchart of a method for encrypting data in a network coding-based passive optical network provided by an embodiment of the present invention, and the steps to be executed are as follows:

[0050] S201: The OLT discovers a pair ONUn and c that can participate in network coding, and establishes a connection between the pair ONUn and c that participate in network coding;

[0051] S202: Pair ONUn and c to mark the data frames that may participate in the network, and perform local cache; OLT caches t...

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Abstract

The invention discloses a method for encrypting data in a passive optical network (PON) based on network encoding. The method for encrypting the data in the PON based on the network encoding comprises the steps that an optical line terminal (OLT) of the PON establishes a network encoding matching connected relation between optical network units (ONUs) with peer-to-peer communication existing in a hanging terminal, the OLT and the matched ONUs respectively carry out network encoding and decoding on peer-to-peer communication data between matched terminals, the OLT respectively carries out various downlink encrypting strategies on data frames participating in the network encoding and data frames without participating in the network encoding along the downlink direction, and the matched ONUs do not carry out the decryption operation only on received encoded data frames. According to the method for encrypting the data in the PON based on the network encoding, a master-slave relation between the OLT in the PON and the ONUs is kept, meanwhile the various downlink encrypting strategies ensure that the phenomenon that decryption can not be achieved due to various decryption secret keys of the multicast received ONUs of the data frames after the encoding does not occur, and the various downlink encrypting strategies are compatible with encryption rules of original non-encoding downlink data frames of the OLT in the PON.

Description

technical field [0001] The invention relates to a data encryption method in a passive optical network based on network coding, and belongs to the technical field of communication. Background technique [0002] The rise of social networks and P2P services has put enormous pressure on metro and backbone networks. According to Ipoque, a German Internet research organization, P2P services have completely dominated today's Internet, and 50-90% of the total traffic comes from P2P. Services characterized by peer-to-peer communications. In this context, higher requirements are put forward for the local switching capability of the equipment. [0003] Network coding is mostly used to solve the service transmission under the butterfly network, but there is no effective coding mechanism for the tree structure with low connectivity. At the same time, the tree structure on the access network side also causes a serious bandwidth bottleneck. Therefore, how to solve this bottleneck, effect...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/06H04L1/00H04Q11/00
Inventor 顾仁涛魏培纪越峰
Owner BEIJING UNIV OF POSTS & TELECOMM
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