Biblio

Content-centric networking is emerging as a credible alternative to host-centric networking, especially in scenarios of large-scale content distribution and where privacy requirements are crucial. Recently, research on content-centric networking has focused on security aspects and proposed solutions aimed to protect the network from attacks targeting the content delivery protocols. Content-centric networks are based on the strong assumption of being able to access genuine content from genuine nodes, which is however unrealistic and could open the door to disruptive attacks. Network node misbehavior, either due to poisoning attacks or malfunctioning, can act as a persistent threat that goes unnoticed and causes dangerous consequences. In this paper, we propose a novel certification methodology for content-centric networks that improves transparency and increases trustworthiness of the network and its nodes. The proposed approach builds on behavioral analysis and implements a continuous certification process that collects evidence from the network nodes and verifies their non-functional properties using a rule-based inference model. Utility, performance, and soundness of our approach have been experimentally evaluated on a simulated Named Data Networking (NDN) network targeting properties availability, integrity, and non-repudiation.

The emerging Information-Centric Networking (ICN) paradigm is expected to facilitate content sharing among users. ICN will make it easy for users to appoint storage nodes, in various network locations, perhaps owned or controlled by them, where shared content can be stored and disseminated from. These storage nodes should be (somewhat) trusted since not only they have (some level of) access to user shared content, but they should also properly enforce access control. Traditional forms of encryption introduce significant overhead when it comes to sharing content with large and dynamic groups of users. To this end, proxy re-encryption provides a convenient solution. In this paper, we use Identity-Based Proxy Re-Encryption (IB-PRE) to provide confidentiality and access control for content items shared over ICN, realizing secure content distribution among dynamic sets of users. In contrast to similar IB-PRE based solutions, our design allows each user to generate the system parameters and the secret keys required by the underlay encryption scheme using their own \textbackslashemph\Private Key Generator\, therefore, our approach does not suffer from the key escrow problem. Moreover, our design further relaxes the trust requirements on the storage nodes by preventing them from sharing usable content with unauthorized users. Finally, our scheme does not require out-of-band secret key distribution.

Content-Centric Networking (CCN) has emerged as a clean-slate future Internet architecture to address the challenges faced by traditional IP network, such as mobility, scalable content distribution and security. As a novel networking paradigm, CCN is built on named data, not host address and decouples the content from location. By the in-network caching, consumer can fetch the interested content from the closest routers.