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High Efficiency Anonymous Authentication and Key Agreement Scheme in Wireless Sensor Nerworks

The existing authentication and key agreement schemes based on public key cryptosystem in wireless sensor networks are based on bilinear pairings, which have high computational cost and can not meet the requirements of anonymity. To solve this problem, a new authentication and key agreement scheme for wireless sensor networks is proposed. The authentication information between nodes is constructed using elliptic curve signature algorithm to achieve identity authentication, and the session key is established by diffie-hellman key agreement technology. Meanwhile, the scheme randomizes the private key and public key of nodes in every authentication process to realize the anonymity and untraceability of the sessions. The scheme avoids the complex bilinear pairing operation, and has a small computational cost on the premise of meeting the security requirements.

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