Abstract:
The Internet of Vehicles (IoV) is a disruptive technology that has a great impact on people's lifestyle and activities. Fully autonomous vehicles are the next generation of connected cars. However, IoV systems suffer from several security threats that could offset the intended advantages. To address the security and privacy issues, several cryptographic and non-cryptographic security solutions should be adopted. However, traditional security solutions might burden the IoV network with further complexity and computational overhead. This would translate into additional performance issues in a network already suffering from big data and large-scale challenges. In this context, lightweight security solutions are needed to reduce the required resources in terms of computations, power and memory, and to optimize the network performance in terms of latency and bandwidth. In this paper, we propose a new lightweight cipher scheme, LoRCA, with dynamic key-dependent structure to provide data confidentiality with minimum resources' requirements. To validate our solution's robustness and efficiency within the IoV context, several performance and security tests were performed. The results show that the proposed solution strikes a good balance between the security level and performance. The proposed LoRCA ciphers achieve a high throughput with an enhancement of at least 100% improvement as compared to the Advanced Encryption Standard (AES), 358% compared to Simon, 388% improvement for Speck and 24% improvement compared to our previous one round cipher scheme. © 2021 Elsevier Inc.
