DDMIA: Distributed Dynamic Mutual Identity Authentication for Referrals in Blockchain-Based Health Care Networks

Patients go to multiple healthcare providers for treatment, and their health data is generally distributed among providers. The the decentralized care system structure make it ideal blockchain-based information systems. authors consider referral use case; instance, a patient goes his primary Centre (PHC) treatment referred hospital. Authentication usually done using certificates or key cryptography, which could become cumbersome when parties are involved in interaction. security requirements were defined, novel multi-party, mutual identity authentication scheme called “Distributed Dynamic Mutual Identity (DDMIA)” was proposed case e-health network. DDMIA enables PHC authenticate designed Elliptic Curve Cryptography. It proven be secure by assuming hardness of elliptic curve discrete log problem (ECDLP) computational Diffie–Hellman (ECDH) CK-Model. formal analysis BAN logic proved that sessions after authentication. simulated AVISPA tool safe against all active attacks. allows authenticated without registering with parties. eliminates need registration centers as well digital certificates. Hence, can implemented similar multiparty networks.