Privacy protection method based on content center

Abstract

The invention relates to a privacy protection method based on a content center. The method comprises a series of programs as follows: a requester uses an asymmetric public key puk_p of a content publisher to encrypt an original interest packet, the interest packet is processed as a Hash value H(I), a router returns a data packet after querying ID information of a related requester in a requester authorization table, the content publisher receives the interest packet encrypted by use of the asymmetric public key puk_p of himself, and uses a symmetric secret key K to encrypt the data packet, the privacy of each of the requester and the publisher is furthest protect; and furthermore, the decryption is unnecessary in the router when content publisher returns the data packet corresponding to the interest packet through the same route, the burdens of saving the secret key and computing by the router are relieved in the premise of protecting the privacy, the different authorization requesters with the same interest request can sufficiently use the cache data, the cache utilization rate is improved, and the requester access resource can be dynamically controlled.

Description

technical field [0001] The invention relates to the technical field of Internet privacy protection, in particular to a content-centric network-based privacy protection method. Background technique [0002] With the continuous progress and development of Internet information technology and the continuous growth of Internet services, the current TCP / IP network model for data packet transmission between terminals can no longer meet the requester's needs for a large number of data services, such as real-time video, voice communication and other services. New application modes such as the Internet of Things, high-traffic video, and social networking. In order to solve the problems exposed by the current Internet such as: insecurity, poor mobility, poor reliability, poor flexibility, etc. (Min Erlong, Chen Zhen, Xu Hongfeng, et al. Analysis on the research progress of content-centric network CCN [J]. Information Network Security, 2012 (2) :6-10.), since 2006, domestic and foreign...

AI Technical Summary

Problems solved by technology

A Shikfa et al (A Shikfa, M R Molva, Privacy-Preserving Content-Based Publish / Subscribe Networks, Emerging Challenges for Security Privacy & Trust, 2009, 297: 270-282.) proposed a multi-level alternate encryption technology (Multiple layer commutative encryption-MLCE), using multiple Secondary encrypted data, although data security can be guaranteed, but the cache advantage of CCN network is not good

[cs .CR], 2012) proposed to use encrypted tunnel method to transmit information, this method can protect information privacy, but the process of encryption and decryption is complicated, and it cannot make full use of the advantages of caching

SC Seo et al. (SC Seo, T Kim, M Jang.A Privacy-Preserving Approach in Content Centric Networking.IEEE Consumer Communications and Networking Conference.2014.pp.866-871) proposed based on symmetric key and asymmetric key The hybrid encryption strategy can effectively protect the privacy of the requester for the release of public content, and can improve the utilization rate of the cache. It overcomes the need to perform multiple encryption and decryption operations in the process of protecting the privacy of the requester by using the encryption tunnel method, which requires a large amount of calculation and cache. Disadvantages of low utilization

The disadvantage is that the requester and the router need to maintain a large number of keys, the privacy of the publisher is easy to leak, and it is impossible to implement effective privacy protection for sensitive information

Asghar M R et al. (Asghar M R, Bernardini C, Crispo B. PROTECTOR: Privacy-preserving information lookup in content-centric networks [C] / / Communications (ICC), 2016IEEE International Conference on.IEEE, 2016:1-7) proposed to use Double encryption strategy is used for privacy protection, which solves the problem that the privacy of content publishers is easy to leak in the mixed encryption strategy, but it cannot realize the retrieval of the same content by multiple authorized requesters with the same request. In addition, multiple encryption and decryption operations are required during the forwarding process of data packets, and a large number of keys need to be maintained at the same time, which causes a certain burden on the router

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