The blockchain is new revolutionary paradigm for the world, but the privacy and confidentiality are still issues. This study is focused on the technical securities to provide a blockchain service on a foundation of trust. We suggested the rule-based data protection system that is to provide authorize rules used in mechanism, to control an access users without intermediaries on the blockchain. We have developed a scenario of an application a smart contract based on the suggested system and simulated it.
Vehicle-to-Everything (V2X) communication for autonomous driving is currently a focus of research and standardization in the USA, Europe and Asia. Vehicle-to-vehicle (V2V) and vehicle-to-infrastructure (V2I) communication has great potential to increase road and passenger safety, and has been considered a next important part of cooperative Intelligent Transportation Systems for the vision of accident-free driving. V2X communication have a lot of threats and vulnerabilities such as distribution of wrong or forged messages, tracking and profiling of vehicles or vehicle drivers, and disturbance or unavailability of communication system, etc. These risks have generated invasion of privacy and interference of autonomous driving. In particular, this paper analyzed the security services and public key infrastructure (PKI) defined in IEEE Wireless Access in Vehicular Environments (WAVE) 1609.2 and proposed the privacy preserving vehicular PKI that provides a trust and efficient V2X communication for autonomous driving environments.
In this paper, we propose the enhanced network-based mobility management protocol, called enhanced proxy mobile ipv6 (E-PMIPv6), which can provide mobile nodes (MNs) with a fast and efficient mobility service in PMIPv6 domain. The proposed scheme can provide a fast and efficient mobility service to MNs and also the strength of network scalability and stability to an access network by proposing the dynamic virtual hierarchical network architecture. In addition, the pre-authentication procedure for an MN, based on the information of neighbor mobile access gateway (MAG) list in the enhanced-policy server (E-PS), is proposed to support seamless handover by reducing MN's handover latency. Through performance evaluations of numerical analyses and simulations, we have confirmed and verified the superiority of the proposed scheme compared to the conventional proxy mobile ipv6 (PMIPv6).
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