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Alternate abstract:
It is necessary to use secure and reliable authentication protocol to ensure the communication security in telemedicine environment. Some existing protocols have the problems of single point failure and poor scalability. A new authentication protocol based on blockchain technology is proposed, which provides the security of communication and solves the problem of single point failure. In the blockchain network, multiple gateway nodes jointly maintain the ledger storing the relevant information of users and medical sensors, so that users and sensors can authenticate with different gateway nodes, which effectively solves the single point failure problem. Formal security analysis using ROR (real-or-random) model shows that the proposed protocol is provably secure. The informal security analysis shows that the proposed protocol has 12 security attributes. Compared with some existing protocols, the proposed protocol has advantages in functionality, security and efficiency, and solves the problems of single point failure and poor scalability.
