Dyanimc Key based Authentication Scheme for Vehicular Cloud Computing

In recent years, Vehicular Cloud Computing (VCC) has emerged as new technology to provide uninterrupted information to the vehicles from anywhere, anytime. The VCC provides two types of services such as safety related messages and non-safety related messages to the users. The vehicles have less computational power, storage etc. so that the vehicles collect information and send these information to the local or vehicular cloud for computation or storage purposes. But due to the dynamic nature, rapid topology changes and open communication medium, the information can be altered so that it leads to misguiding users, wrong information sharing etc. In the proposed scheme, Elliptic Curve Cryptography used for secure communication in the network that also ensures the security requirements such as confidentiality, integrity, privacy etc. The proposed scheme ensures the mutual authentication of both sender and receiver that wants to communicate. The scheme uses additional operation such as one-way hash function and concatenation to secure the network against various attacks i.e. spoofing attack, man-in-the-middle attack, replay attack etc. The effectiveness of the proposed scheme is evaluated using the different metrics such as packet delivery ratio, throughput and end-to-end delay and it is found better where it is not applied.