An Identity-Based Authentication Scheme With Full Anonymity and Unlinkability for Mobile Edge Computing
Junfeng Tian, Yiting Wang, Yue Shen · IEEE Internet of Things Journal · 2024
Mobile Edge Computing (MEC) meets the low-latency requirements of mobile devices and improves the network performance while presenting several challenges including, but not limited to, user privacy protection, secure transmission of data, and limited computational and storage resources. To address these problems, many identity-based anonymous authentication and key agreement (ID-AAKA) schemes for MEC have been proposed recently. However, these schemes still have some limitations. First, most of them do not achieve unlinkability and full anonymity of users, thus having the risk of privacy leakage. Second, they typically use long-term static keys that are easy to be cracked by attackers for authentication, making the key security and communication security unguaranteed. To further address the above problems, we propose a new ID-AAKA scheme for MEC. The scheme provides unlinkability and full anonymity through one-time pseudonyms while also enhancing key security and communication security by using one-time public-private key pairs for authentication. In addition, we introduce a parallel processing mechanism that allows two mutually independent processes to proceed simultaneously to reduce the total time consumption. Finally, we perform the security analysis and performance evaluation. The results show that the proposed scheme has significant advantages in terms of security and maintains low computation costs and total time consumption, as well as relatively reasonable communication costs.