# BBSF: Blockchain-Based Secure Weather Forecasting Information through Routing Protocol in Vanet
## 2 Literature Review  
Blockchain technology has transformed how data are stored and shared by offering a decentralized and secure transaction platform. In recent years, researchers have explored the potential of blockchains in vehicular ad hoc networks (VANETs) to improve the security and efficiency of data sharing. This proposed research focuses on utilizing blockchain technology to provide secure weather forecasting information in VANETs. The proposed system, Blockchain-Based Secure Weather Forecasting (BBSF), employs a routing protocol that enables data transmission among vehicles in a VANET. The BBSF system collects real-time weather data from multiple sources, such as weather stations and sensors mounted on vehicles, and then securely transmits the data among vehicles in the VANET [8]. The routing protocol ensures that the data are delivered to the intended recipients securely and efficiently. The use of blockchain technology in BBSF offers several advantages. Firstly, the decentralized nature of the blockchain ensures that the data are not controlled by a single entity, thereby increasing its trustworthiness. Secondly, the tamper-proof nature of the blockchain ensures that the data cannot be altered or manipulated by malicious actors, thereby increasing its security. Finally, the use of smart contracts in blockchains enables the automatic execution of predefined actions based on certain conditions, thereby improving the efficiency of the system [9]. The proposed BBSF system has significant implications for various domains, such as transportation, logistics, and emergency response. The secure and efficient transmission of weather data in a VANET can enable better decision-making by drivers and traffic management authorities, leading to safer and more efficient transportation. Overall, the proposed research offers a novel approach to utilizing blockchain technology to improve data sharing security and efficiency in VANETs. In VANETs, the best possible vehicle route is also necessary, similar to other security parameters, including security, privacy, and accuracy. Good weather is also a factor that compels the vehicle to follow an appropriate route. Weather forecasting between the V2V and V2I is needed to notify the vehicle of the most suitable route for it to travel on. We designed a blockchain-based secure weather forecasting information flow to secure V2V and V2I communication [10; 11]. In [12], reliable and efficient alarm message routing is a real-world channel proposed for VANETs. It uses a very small number of broadcast packets to propagate alarm messages. For nodes in VANETs, it calculates the propagation of alarm messages. In REAR, two approaches are analyzed for utilizing the receipt probability. Three functions are analyzed for contention delay calculation. With the help of theory and simulations, it provides much higher reliability and contention delay using fewer broadcast packets than location-based algorithms. The authors in [13] present a secure SDN-based routing protocol for internet of vehicles uses in distributed SDN architecture, and a blockchain to secure Li and efficiently route the packets. It uses two different implementations. The first method uses SDN in the RSU network. The second method deploys SDN in the entire IOV. It uses a blockchain for securing these routing protocols. SURFER has outperformed two protocols, QRA and SD-IOV, regarding latency packet delivery and network overhead. In [14], the authors provide a VANET that enables the communication between vehicles about environmental information and alerts. This communication must be securely and correctly transmitted. A trust score evaluation scheme for secure routing in VANETs is proposed to find anonymous transport and the optimal route for the message to its destination point. The packet delivery ratio and delay are the main factors or parameters that are focused on. The message is sent in optimal five continuously, until a bogus vehicle is found. If found, the vehicle will be removed, and the next optimal path will be used.