Table 3.
Comparative analysis of decentralized IoMT security schemes (blockchain method).
| Author | Year | Objective | Technique Used | Type of Data | Framework | Pros | Cons |
|---|---|---|---|---|---|---|---|
| Abdellatif et al. [113] | 2021 | Process large amounts of medical data | Blockchain | Medical data | MEdge-Chain | Remote monitoring, different actions for different data | Security is not focused |
| Xu et al. [114] | 2019 | Fine-grained access control | Blockchain (PoW) | Health data | Healthchain | User can update key if suspicious | Not suitable for high adversary |
| Liu et al. [115] | 2019 | Data sharing and privacy preservation | Blockchain (DPoS) | EHR file | - | Symptom matching communication | High overhead |
| Lin et al. [116] | 2021 | Task offloading and data processing to resist malicious attacks | Blockchain & MAC | VR video and feedback | - | Common view of similar patients | High computing capacity required |
| Garg et al. [117] | 2020 | Secure exchange of health-related confidential and private information | Blockchain & ECC | Health data | BAKMP | Dynamic node addition | Expensive computation |
| Egala et al. [118] | 2021 | Efficient secure exchange for decentralized network | Blockchain & ECC | EHR file | Fortified-Chain | Low energy, fast response | Ring tamper resistance instead of device |