Method and device for protecting user behavior privacy in content-centric network

Abstract

Embodiments of the present invention provide a method and device for protecting user behavior privacy in a content-centric network. The method includes: determining the number of content fragments according to the content privacy level and content popularity of the target data content, and the node betweenness; The number of content fragments, store the target data content in fragments; obtain the user's data request information, reorganize the fragmented data, and send a copy of the reorganized target data content to the user terminal. The method and device for protecting user behavior privacy in the content-centric network provided by the embodiments of the present invention classify the privacy levels of data content, and implement fragmented storage and reorganization, on the one hand, reduce the burden of non-private content on the network and routers, and ensure The advantage of CCN distribution efficiency, on the other hand, increases time uncertainty through fragmented storage and reorganization, resists time attacks, prevents attackers from judging the preferences of adjacent users from round-trip time, and protects user behavior privacy.

Description

technical field [0001] Embodiments of the present invention relate to the field of network communication technologies, and in particular, to a method and device for protecting user behavior privacy in a content-centric network. Background technique [0002] With the rapid development of the Internet and the continuous growth of the number of users, the pressure of data traffic distribution on the traditional IP Internet is becoming more and more serious, and many problems have been exposed. These problems make it difficult for the traditional IP Internet architecture to continue to support such a huge data traffic distribution, and cannot effectively meet the communication needs of current users. In order to solve many problems in the traditional IP Internet, people are sparing no effort to study the Internet architecture that is more suitable for the current situation, the most representative of which is Content-Centric Networking (CCN). [0003] CCN is a communication net...

AI Technical Summary

Problems solved by technology

However, for the recent access mechanism, the attacker can request the target content multiple times and find the delay phenomenon, then it can be speculated that other users have also requested the target content before the request, and then learn the communication traces of neighboring users on sensitive content, and privacy Leakage; for the random fallback mechanism, because the content needs to be moved backwards from the storage location in turn during random fallback, the change is too large, and the calculation of the route is too difficult

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