Abstract
In order to improve the balanced relationships among security, privacy and design overhead for existing wireless sensor networks (WSNs) user authentication scheme, a lightweight user authentication scheme based on fuzzy extraction technology for WSNs. The present scheme combined with biometric fuzzy extraction technology and hash function to generate biometric key, which eliminates the user password factor in the existing authentication schemes. In addition, the proposed scheme can complete mutual authentication and session key agreement between legitimate users and sensor nodes only by using xor, hash and other operations with the lower computation overhead. And the heuristic security analysis, BAN logic model and random oracle model are used for security verification and performance analysis of the current scheme. The results of analysis and verification show that our scheme achieves more security and functional features, and keeps computational efficiency. Compared with other related works, our scheme is more suitable for practical application.
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