Providing Security in Vehicular Adhoc Network using Cloud Computing by secure key Method

Now a day's Traffic as well as security issue are growing in the area of vehicular adhoc network. The aim of this paper is to provide security, the algorithm-I is used for detecting malicious node in VANET and improved cryptosystem. As Vehicular Adhoc Network is a continuously changing technology that required the Advance Transportation System with security. We are going to discuss about both of them using cloud computing. As in traffic issue the Road side unit can be use to communicate between two vehicle for sharing the data, we want to place constant distance between two RSU, So it can be communicate safely but due it, Its has many problem like cost & security. In this paper we can reduce it, vehicles are directly communicate though the cloud so the structure is going to optimize hence reduces the cost as well as able to solve the security problem because of its limited accessibility.