Abstract
Telecare Medical Information System (TMIS) integrates various types of mobile devices and communication technologies to upgrade the traditional face-to-face medical treatment model to intelligent one, which can provide the flexible and convenient e-health care. Due to the complexity and openness of Internet, e-health care data is grabbing the interest of cyber attackers. Hence, security and privacy are still our dominant concerns. Fortunately, blockchain technology leverages decentralized or distributed process to ensure data security. A MediBchain-based privacy-preserving mutual authentication for mobile medical cloud architecture (abbreviated to MBPA) is proposed in this paper. MBPA scheme not only mitigates the weaknesses of existing ones, but has other advantages. First, MBPA scheme supports patients anonymity and traceability since the patient’s identity is hidden in two dynamic anonyms and a static anonym and only the trusted center can recover his/her real identity. Second, each MediBchain node shares a secret value, which realizes authentication with extremely low computional cost between terminals and MediBchain nodes. Finally, MBPA scheme is proven safely against passive and active attacks under elliptic curve computational Diffie-Hellman problem (ECDHP) assumption in random oracle model. Hence, these features make MBPA scheme very suitable for computation-limited mobile devices compared with other related existing schemes.
Highlights
Telecare Medical Information System (TMIS) for mobile medical cloud architecture is new paradigm of blending medical treatment, blockchain, cloud computing and cloud storage together via the Internet to provide high quality e-health care for terminals
TMIS has attracted a lot of works in an amalgamated manner, which brings enormous changes to e-health care paradigm
SYSTEM BUILDING BLOCKS we review some cryptography materials used in MBPA scheme and introduce a practical consensus mechanism (PBFT)
Summary
Telecare Medical Information System (TMIS) for mobile medical cloud architecture is new paradigm of blending medical treatment, blockchain, cloud computing and cloud storage together via the Internet to provide high quality e-health care for terminals (patients/doctors). In MBPA scheme, we resolve above discussed problems by storing the encrypted data in cloud based on medical blockchain (abbreviated to MediBchain) technology. Wang et al [21] proposed a blockchain-based mutual authentication security protocol In this new scheme, there was no need for the trusted third parties to provide security and privacy. Mohsin et al [31] constructed a novel verification secure protocol for patient authentication based blockchain-PSO-AES techniques in finger vein biometrics, which is not suitable for computation-limited. Alomar et al [3] proposed a specific scheme: A blockchain based privacy preserving platform for healthcare data, where the authentication process relies on secure channels, which is not in practice.
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