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Content-Centric Networking (CCN) is a recently proposed Internet paradigm that focuses on scalable, secure and efficient content distribution. The main abstraction is named and addressable content. A consumer requests desired named content by generating a so-called interest, which is then routed by the network towards an in-network cached copy, or the authoritative producer, of that content. Since...
Content-Centric Networking (CCN) is a candidate next-generation Internet architecture that offers an alternative to the current IP-based model. CCN emphasizes scalable and efficient content distribution by making content explicitly named and addressable. It also offers some appealing privacy features, such as lack of source and destination addresses in packets. However, to be considered a fully viable...
Information-Centric Networking (ICN) is a recent paradigm that claims to mitigate some limitations of the current IP-based Internet architecture. The centerpiece of ICN is named and addressable content, rather than hosts or interfaces. Content-Centric Networking (CCN) is a prominent ICN instance that shares the fundamental architectural design with its equally popular academic sibling Named- Data...
We present SCR, a secure content replication protocol for the Content-Centric Networking (CCN) architecture. The goal of SCR is to allow a data producer to cache protected content in off-path semi-trusted caches or replicas. In contrast to the standard “take what you want” model of CCN, SCR ensures that no unauthorized, off-path entity can obtain data from these replicas, even if the content is encrypted...
We present the logical design of a trust engine for Information-Centric Networking (ICN) that is capable of efficiently and correctly verifying content integrity and authenticity. Our primary contribution is the synthesis and unified treatment of four different and popular trust models. We show in which operational aspects they vary and emphasize which parts of the verification mechanics are invariant...
A core feature of Content-Centric Networking (CCN) is opportunistic content caching in routers. It enables routers to satisfy content requests with in-network cached copies, thereby reducing bandwidth utilization, decreasing congestion, and improving overall content retrieval latency. One major drawback of in-network caching is that content producers have no knowledge about where their content is...
Content-Centric Networking (CCN) is a recent network paradigm designed to address some key limitations of the current IP-based Internet. One of its main features is innetwork content caching which allows requests for content to be served by routers. Despite the benefits of improved bandwidth utilization and lower latency of retrieving popular content, innetwork caching inhibits producers from collecting...
Content-Centric Networking (CCN) is an emerging (inter-)networking architecture with the goal of becoming an alternative to the IP-based Internet. To be considered a viable candidate, CCN must at least have parity with existing solutions for confidential and anonymous communication, e.g., TLS, tcpcrypt, and Tor. ANDāNA (Anonymous Named Data Networking Application) was the first proposed solution that...
Block ciphers are essential cryptographic primitives used for encryption in resource constrained hardware systems. Many modern block ciphers are based on the substitution permutation network (SPN) design. The substitution step is commonly the only non-linear transformation in the cipher, and is usually comprised of a permutation which applies an S-box substitution to each element of the cipher state...
Information Centric Networks (ICN), such as Content Centric Networks (CCNx) or Named Data Networks (NDN) disseminate data using hierarchal names for each chunk of data, where a chunk is roughly the size of an IP datagram. To secure the named exchange, each chunk has a digital signature or a hash-based name. Because these datagrams may be much larger than a link MTU, there is a need for fragmentation,...
Content-Centric Networking (CCN) is a communication paradigm that emphasizes content distribution. Named-Data Networking (NDN) is an instantiation of CCN, a candidate Future Internet Architecture. NDN supports human-readable content naming and router-based content caching which lends itself to efficient, secure, and scalable content distribution. Because of NDN's fundamental requirement that each...
This paper proposes a comprehensive encryption-based access control framework for content centric networking (CCN), called CCN-AC. This framework is both flexible and extensible, enabling the specification, implementation, and enforcement of a variety of access control policies for sensitive content in the network. The design of CCN-AC heavily relies on the concept of secure content object manifests...
Content-centric networking (CCN) project, a flavor of information-centric networking (ICN), decouples data from its source by shifting the emphasis from hosts and interfaces to information. As a result, content becomes directly accessible and routable within the network. In this data-centric paradigm, techniques for maintaining content confidentiality and privacy typically rely on cryptographic techniques...
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