XTSeH: A Trusted Platform Module Sharing Scheme towards Smart IoT-eHealth Devices

Di Lu, Ruidong Han, Yulong Shen, Xuewen Dong, Jianfeng Ma, Xiaojiang Du, Mohsen Guizani

Research output: Contribution to journalArticlepeer-review

24 Scopus citations

Abstract

IoT based eHealth system brings a revolution to healthcare industry, with which the old healthcare systems can be updated into smarter and more personalized ones. The practitioners can continue monitoring the physical status of the patients at anytime and anywhere, and develop more precise treatment plans by analyzing the collected data, such as heart rate, blood pressure, blood glucose. Actually, these smart sensors used in eHealth system are smart embedded devices (SED). Due to the limitations on hardware capabilities, these inter-connected SEDs lack of security considerations in design and implementation, and face the threats from the network. To prevent the malicious users (or programs) from tampering with the SEDs, trusted platform module (TPM) is adopted, which can guarantee the system integrity via detecting unauthorized modifications to data and system environment. However, due to the limited scalability and insufficient system resources, not all SEDs can be deployed with TPM chips. To address this issue, in this paper, a TPM extension scheme (xTSeH) is proposed. In xTSeH, we have extended the functions of a TPM deployed in a SED (TSED) to those non-TPM-protected SEDs (N-TSED) via network. A shadow TPM in the form of a kernel module is designed as the trust base for the N-TSED, which is the representative of the TPM in TSED. Then, three protocols are proposed to implement the integrity verification and inter-SED authentication. Finally, a Raspberry Pi based prototype system is designed and implemented. The feasibility and usability of our scheme are proved by the analysis of the experimental results of system performance.

Original languageEnglish
Article number9186690
Pages (from-to)370-383
Number of pages14
JournalIEEE Journal on Selected Areas in Communications
Volume39
Issue number2
DOIs
StatePublished - Feb 2021

Keywords

  • Internet of Things (IoT)
  • TPM sharing
  • remote attestation
  • smart eHealth device
  • trusted platform module

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