Secure User Authentication Scheme Using Revocable Biometrics Based on Secret Sharing for Smart Home

The popularity of smart homes has been facilitated by the development of information and communication technology and wireless sensors. These technologies allow users to remotely control smart devices in their homes. However, smart home communication primarily relies on the Internet, which exposes smart home networks to multiple security risks, such as smart device capture, simulation attacks, and internal privilege attacks. These threats could result in illegal users stealing data transmitted by smart devices, thereby violating users’ privacy and security. To address these challenges, this article proposes a novel revocable biometric authentication scheme based on secret sharing technology for secure remote user authentication in smart home environments. This solution introduces secret sharing technology to protect users’ revocable biometric templates and enhances the security of user privacy. To verify the effectiveness of the proposed scheme, we conducted experimental verification, including measuring the equal error rate (EER), unlinkability, and revocability. The experimental results demonstrate that this solution can effectively protect the security of user biometric information while maintaining high authentication accuracy. Additionally, it has good revocability and unlinkability, which helps to improve the security and safety of smart homes without compromising user experience.