Cache privacy protection strategy in content centric networking

Yi ZHU; Zheng-kun MI; Wen-nai WANG

doi:10.11959/j.issn.1000-436x.2015323

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Cache privacy protection strategy in content centric networking

privacy protection | 更新时间：2024-06-05

- Cache privacy protection strategy in content centric networking
- Journal on Communications Vol. 36, Issue 12, Pages: 139-150(2015)
- 作者机构：
  
  1. 南京邮电大学通信与信息工程学院，江苏南京 210046
  2. 江苏大学计算机科学与通信工程学院，江苏镇江 212013
  3. 南京邮电大学宽带无线通信与传感网技术教育部重点实验室，江苏南京 210046
- 作者简介：
- 基金信息：
  
  Jiangsu Provincial Science and Technology Support Program of Industrial Projects(BE2013019)
- DOI：10.11959/j.issn.1000-436x.2015323
  CLC： TN915.9
- Online First：2015-12，
  
  Published：25 December 2015
- 稿件说明：
移动端阅览
Yi ZHU, Zheng-kun MI, Wen-nai WANG. Cache privacy protection strategy in content centric networking[J]. Journal on Communications, 2015, 36(12): 139-150.
DOI：

Yi ZHU, Zheng-kun MI, Wen-nai WANG. Cache privacy protection strategy in content centric networking[J]. Journal on Communications, 2015, 36(12): 139-150. DOI： 10.11959/j.issn.1000-436x.2015323.

摘要

缓存隐私泄露是内容中心网络中的重要安全威胁之一，攻击者通过探测缓存可以获取合法用户的隐私信息。针对该安全问题，在隐私与非隐私内容区分的基础上，提出一种基于最近访问信息与回退机制的缓存隐私保护策略（CPPS-RVI＆amp;ECP），并与现有典型防御策略-随机k延迟（RFKD）对比，围绕隐私泄露率与网络命中率开展理论性能分析。该策略通过设置隐私标识，实现最近访问者的识别；通过随机缓存位置存入以及移出回退机制，降低了隐私泄露概率，且提升了网络性能。设定实验条件进行数值分析，结果表明，虽然RFKD有理想的隐私保护能力，但是它是以完全牺牲缓存的内容分发能力为代价的，而 CPPS-RVI＆amp;ECP 则通过合理设置回退概率，可以在保持较低隐私泄露率的同时，获得较高的网络命中率。

Abstract

Cache privacy leak was one of the important security threats of CCN

the adversary could obtain the legitimate user’s privacy information through probing cache visiting time.Aiming at this security problem

the privacy and non-privacy contents were dealt separately

then a cache privacy protection strategy based on recent visiting information and evicted copy up (CPPS-RVI＆amp;ECP) was proposed.In order to compare with the current typical defense strategy-random first k delay (RFKD)

the theoretical analysis of privacy leak probability and network hit probability are further given.The CPPS-RVI＆amp;ECP identifies the recent visitor by setting privacy mark in interest packet

decreases the privacy leak probability by selecting replacing position randomly

and promotes the network performance by the mechanism of shifting evicted copy upstream.The numeric analysis results under the prescribed experimental conditions show that

whereas the ideal privacy protection ability of RFKD is obtained at the expense of sacrifice of cache contents delivery capability

the proposed CPPS-RVI＆amp;ECP can obtain low privacy leak probability and in the meantime maintain high network hit probability by setting reasonable upstream shifting probability.

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references

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