However, the centralized structure of the Kerberos authentication mechanism brings forth added complicacy, which could lead to extended authentication delay and add complications to the transition process due to the participation of numerous entities. In the field of VANETs, many current solutions rely on a central trusted authority, which is not a scalable solution and becomes the network's single point of failure. To address these issues, researchers introduce a decentralized blockchain-based authentication solution for VANETs that integrates blockchain with VANETs. This ensures the distributed structure and preserves an immutable ledger of data, strengthening the system's integrity for VANETs. The Inter Planetary File System (IPFS), Ciphertextbased Attribute Encryption (CP-ABE), and the Ethereum blockchain are the foundations for the distributed VANET system suggested in [9]. Several pieces of research have been conducted to create secure VANET authentication, as shown in Table 1. A Two-Factor Lightweight Privacy-preserving (2 FLIP) scheme has been introduced in an authentication method for Vehicular Ad-Hoc Networks (VANETs), utilizing a decentralized certificate authority and a biological-password-based, two-factor authentication to significantly reduce computation and communication overhead while ensuring strong privacy preservation and resilience against denial-of-service attacks [10]. In [11], the authors design a protocol to ensure Secure and Efficient Message Authentication (SEMA) between vehicles and Roadside Units (RSUs), focusing on preventing vehicles from being falsely accused and ensuring robustness against various security attacks. It reaches that goal through a combination of pseudonym-based and group-based methods. SEMA achieves mutual authentication between vehicles and RSUs, ensuring that the communication is not only secure but also respects the privacy of the participants. In [12], it introduces a secure and efficient authentication protocol specifically designed for Vehicle-to-Vehicle (V2V) communication within Vehicular Ad-Hoc Networks (VANETs) and Internet of Vehicle (IoV) technologies, aiming to enhance traffic system management and road safety. A novel feature of the protocol is the vehicle password change phase, which incorporates the use of a honey list technique to thwart offline password-guessing attacks, enhancing the overall security of the system. However, those three articles [10; 11; 12] still utilize the centralized network, which can create a single point of failure, and the exchanged data can be altered or tampered with, leading to potential trust issues. To overcome those issues, several researchers have applied blockchain technology during the VANET authentication phase. In [13], the authors build a new blockchain-based authentication infrastructure for wireless networks that utilizes AES, the Temporal Key Integrity Protocol (TKIP), and the Counter Mode with Cipher Block Chaining Message Authentication Code Protocol (CCMP) to secure the user's login information, using blockchain to verify user credentials. It utilized the hyperledger fabric blockchain in its proposed method. In [14; 15; 16], the authors combine the ECC and blockchain certificate management to make a secure and decentralized authentication in VANETs. However, among all the proposed authentication methods that utilize blockchain, every paper utilizes and collects the data from either the network or the blockchain environment only, and none of them utilize data from both the network and the blockchain side. In our proposal, we integrate Kerberos authentication and blockchain to conduct the innovational authentication system for VANETs. This approach stores Kerberos authentication messages in the blockchain's distributed ledger that can be accessed in the Trusted Authentication Server (TAS) and all RSUs. This authentication message storing aims to simplify handover delay processes, shorten authentication delay, and securely keep the authentication message.