Abstract:
Patients see multiple doctors, and their health data is shared. Blockchain-based health information systems are ideal for distributed health data and decentralized healthcare systems. For example, a patient is referred to a hospital by his primary health center (PHC). When multiple parties are involved in a healthcare interaction, certificates or key cryptography can be cumbersome for authentication. The security requirements were defined, and a novel multi-party, mutual patient identity authentication scheme called “Distributed Dynamic Mutual Identity Authentication (DDMIA)” was proposed for the referral use case in a blockchain-based e-health network. PHCs can authenticate patients to referred hospitals using the DDMIA. Elliptic Curve Cryptography created DDMIA. CK-Model assumed the hardness of the elliptic curve discrete log problem (ECDLP) and ECDH to prove its security. After authentication, BAN logic formalized security. AVISPA simulated the DDMIA scheme and found it safe against all active attacks. Multiple parties can authenticate a patient without registering. No more registration centers or digital certificates. DDMIA can be used for blockchain-based multiparty authentication.
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