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In this paper, we propose an enhanced request adaptive (EReA) scheme for content service provision in dynamic information-centric vehicular networking (ICVN) environment. The EReA scheme manages the cache update at the roadside units (RSUs) and provides low-latency content delivery to the end-users. User requests trigger the cache update at the RSU for a particular content item on the basis of its u p d a t e − p r o b a b i l i t y. We introduce an additional parameter t o l e r a n c e i for each content item i. This parameter suppresses the frequency of content updates triggers at the RSU cache during high network load for the non-critical contents. This provides an additional saving in bandwidth. The simulation setup is created by ndnSIM 2.0 to validate the performance of this proposed scheme. The working and performance of the other content delivery schemes are also discussed in details. Results show that the proposed scheme provides a better hit-ratio compared to the existing ReA scheme under high network load, which results in an additional saving in bandwidth. Additionally, it also inherits the advantages of the ReA scheme. [ABSTRACT FROM AUTHOR]

• A secure blockchain-based interest forwarding scheme is designed. • A reputation-based blockchain caching placement strategy is designed. • A lightweight secure neighbor discovery protocol is designed. • The designed scheme allows only valid interest packets to be forwarded, and only trust data will be cached and delivered. • Simulation results show the feasibility and efficiency. In vehicular networks, vehicles exchange a massive amount of information aiming at improving people's safety. Most of this information is personal or sensitive in nature, which makes security and privacy indispensable tasks. Named Data Networking is a future Internet architecture that adopts content-based security and in-network caching features to improve content delivery. However, the use of Named Data Networking on top of vehicular networks brings various challenges, especially in security and trust levels. The use of the distributed and control-less in-network caching allows malicious users to use the built-in design to launch attacks at the cache-store. Moreover, a malicious node can serve invalid or unlimited Interests to start an Interest flooding attack. In this paper, we propose a reputation-based Blockchain mechanism to secure both of Interest and Data forwarding plane, and content caching. The simulation results exhibit that our solution forwards only valid Interest and caches only trust content. [ABSTRACT FROM AUTHOR]