Abstract
The Internet of Medical Things (IoMT) is a kind of connected infrastructure of smart medical devices along with software applications, health systems and services. These medical devices and applications are connected to healthcare systems through the Internet. The Wi-Fi enabled devices facilitate machine-to-machine communication and link to the cloud platforms for data storage. IoMT has the ability to make accurate diagnoses, with fewer mistakes and lower costs of care. IoMT with smartphone applications permits the patients to exchange their health related confidential and private information to the healthcare experts (i.e., doctors) for the better control of diseases, and also for tracking and preventing chronic illnesses. Due to insecure communication among the entities involved in IoMT, an attacker can tamper with the confidential and private health related information for example an attacker can not only intercept the messages, but can also modify, delete or insert malicious messages during communication. To deal this sensitive issue, we design a novel blockchain enabled authentication key agreement protocol for IoMT environment, called BAKMP-IoMT. BAKMP-IoMT provides secure key management between implantable medical devices and personal servers and between personal servers and cloud servers. The legitimate users can also access the healthcare data from the cloud servers in a secure way. The entire healthcare data is stored in a blockchain maintained by the cloud servers. A detailed formal security including the security verification of BAKMP-IoMT using the widely-accepted Automated Validation of Internet Security Protocols and Applications (AVISPA) tool is performed to demonstrate its resilience against the different types of possible attack. The comparison of BAKMP-IoMT with relevant existing schemes is conducted which identifies that the proposed system furnishes better security and functionality, and also needs low communication and computational costs as compared to other schemes. Finally, the simulation of BAKMP-IoMT is conducted to demonstrate its impact on the performance parameters.
Highlights
Internet of Medical Things (IoMT) is an assortment of health care systems to provide secure transmission of health related data between smart devices which help the remotely located doctors, care-providers, medical test centers to store and exchange health data electronically
Several potentials for security and privacy breaches that might occur in the healthcare systems are unauthorised access to enormous patients sensitive data that helps in making life critical decisions
The formal security verification of BAKMP-IoMT using the widely-accepted AVISPA tool is performed to demonstrate its resilience against various known passive/active attacks, and through non-mathematical security analysis we show that BAKMPIoMT is robust against other attacks, such as ‘‘replay attack’’, ‘‘man-in-the-middle attack’’, ‘‘impersonation attacks’’, ‘‘Ephemeral Secret Leakage (ESL) attack’’, ‘‘privileged-insider attack’’, ‘‘physical medical devices capture attack’’ and ‘‘data modification attack’’
Summary
Internet of Medical Things (IoMT) is an assortment of health care systems Services etc.) to provide secure transmission of health related data between smart devices which help the remotely located doctors, care-providers, medical test centers to store and exchange health data electronically It further provides real time medical services and assistance through Internet enabled smart devices like smart phones, smart medical wearable. Other malicious activities are modification of health data, hijacking of medical devices, gaining access to hospitals networks and exploitation of exchanged and stored information are performed to threat the lives of the patients. This necessitates to explore optimized solutions to deal with the threats and attacks on IoMT. It is recommended to consider a private blockchain in such an environment
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