|Thesis abstract: |
Today, the most predominant use of the Internet is centered on content creation, dissemination and delivery. In fact, the end users are more interested in obtaining content, rather than merely being provided with connectivity among two addressable entities. For this reason, a new communication paradigm, namely Content Centric Networking (CCN), may have a pervasive impact on the Internet. Among different proposals for in-network caching of popular content, CCN is one of the most promising. In CCN, data are sent in reply to interest packets addressing named data chunks, which are cached along the way back to the requester originator.
The CCN design introduces unique opportunities and many challenges to address. There are some open problems: the development of both scalable routing solutions and fast forwarding engines, the analysis of caching issues, namely cache replacement policies and cache pollution attacks, and the design and implementation of practical and general-purpose security mechanisms. Considering these open issues, we would like to find and develop an efficient solution for some caching and network security challenges.
The aim of the research activity is, in the first year, to assess the security model that current proposals provide in terms of integrity and authenticity of the contents and also in terms of privacy and trust related to the users. Moreover we face the problem of designing defenses against new types of attacks, e.g. content pollution attacks. While in the second year, we will propose a security model for the CCN scenario: both theoretical and simulative approaches will be considered in order to develop innovative solution to satisfy the security needs on both content and user sides. Finally in the third year, we will assess the robustness of the model to traffic analysis and we will compare the performance with different network scenarios.