EASPSC: Efficient authentication of SignRecryption protocol using shareable clouds in VANET groups

Vehicular ad hoc networks (VANET) is one of the most awaited and ambitious projects of Intelligent Transport System (ITS), where vehicles are permitted to talk with each other. The ultimate goal of the network is to develop a connected network of automobiles, and eventually to reduce traffic and accidents. However, VANET is an ad hoc network without any infrastructure. Apart from architectural issues, there are plenty of security and performance issues, which makes it difficult to be implemented. Therefore, we are using fully authenticated Signcryption technique along with re-cryptography and shareable cloud to make the network safe, reliable and robust. Signcryption combines signature and encryption in a single step, hence decreasing the number of computations. Re-cryptography allows alternative authorities to take charge of the primary authority while maintaining communication transparency. Group signature facilitates secure communication within the group. Security has been verified using Burrows-Abadi-Needham (BAN) logic and Automated Validation of Internet Security Protocols and Applications (AVISPA).