The concept of the Internet of Vehicles (IoV) has attracted the attention of many sectors such as the automotive industry, academia, engineering, etc., offering a wide variety of benefits, such as reduced congestion, safer driving, and less pollution. However, since the deployment of IoT based devices is in an open field, the IoV environments can be a vital issue in the absence of security protections. In this paper, we propose an efficient authentication scheme over blockchain, named EASBF, for secure fog computing-enabled internet of vehicles. Specifically, the proposed EASBF scheme consists of five phases: initialization, registration, mutual authentication, and exchanging keys, consensus, and certificate update. Based on the elliptic curve cryptography, one-way hash function, and blockchain technology, the EASBF scheme can achieve confidentiality, integrity, authenticity, privacy, anonymity, non-repudiation, and perfect forward secrecy. The EASBF scheme is robust against cyber attacks, including, DDoS attack, replay attack, man-in-the-middle attacks, identity theft attack, traffic analysis attack, masquerading attack, and session key disclosure attack. Both the AVISPA tool and the random oracle model are used in security analysis. Finally, we demonstrate the effectiveness of the EASBF scheme in terms of two performance metrics, namely, computation overhead, communication overhead, and storage overhead.

车联网（IoV）的概念吸引了许多领域的关注，例如汽车工业，学术界，工程学等，提供了多种好处，例如，减少了拥堵，提高了驾驶安全性并减少了污染。但是，由于基于IoT的设备的部署处于开放领域，因此在缺乏安全保护的情况下，IoV环境可能成为至关重要的问题。在本文中，我们提出了一种名为EASBF的基于区块链的有效身份验证方案，用于支持雾计算的安全车联网。具体而言，拟议的EASBF方案包括五个阶段：初始化，注册，相互认证和交换密钥，共识和证书更新。基于椭圆曲线密码学，单向哈希函数和区块链技术，EASBF方案可以实现机密性，完整性，真实性，隐私性，匿名性，不可否认性和完美的前向保密性。EASBF方案可抵御网络攻击，包括DDoS攻击，重播攻击，中间人攻击，身份盗窃攻击，流量分析攻击，伪装攻击和会话密钥泄露攻击。AVISPA工具和随机预言模型都用于安全性分析。最后，我们从两个性能指标（即计算开销，通信开销和存储开销）证明了EASBF方案的有效性。流量分析攻击，伪装攻击和会话密钥泄露攻击。AVISPA工具和随机预言模型都用于安全性分析。最后，我们从两个性能指标（即计算开销，通信开销和存储开销）证明了EASBF方案的有效性。流量分析攻击，伪装攻击和会话密钥泄露攻击。AVISPA工具和随机预言模型都用于安全性分析。最后，我们从两个性能指标（即计算开销，通信开销和存储开销）证明了EASBF方案的有效性。