Authentication protocol in CTNs for a CWD-WPT charging system in a cloud environment

The Internet of Things (IoT) has developed very rapidly in recent years, becoming increasingly complex. The communication things networks (CTNs) is a very important element in IoT for the interconnection of several objects (between objects or objects with the internet). In the context of electric vehicles, the development of CTNs represents a pillar for the implementation of new services such as charge while driving (CWD) based on wireless power transfer (WPT) technology. Cloud-based vehicular ad-hoc networks (VANETs) are one of the networks that can support the high mobility, low latency and connectivity required for a CWD-WPT system. The CWD-WPT charging system provides comfort and time optimization for users if the privacy, integrity and availability of the system are guaranteed. This paper proposes an authentication protocol that uses different cryptographic schemes for key management and distribution in a CWD-WPT cloud charging system that guarantees message privacy and integrity, mutual authentication of system elements and anonymity of EVs.