# SoK: Delegated Security in the Internet of Things
## Appendix A Methodology for Selecting Papers Suitable for the Review
### Results of the Selection Procedure
\begin{tabular}{c c c c c c} \hline \hline \(\mathbf{\lambda}\) & **Title** & **T** & **Cn** & **h** \\ \hline
31 & BDSS-FA: A Blockchain-Based Data Security Sharing Platform With Fine-Grained & 2020 & J & 41 & 204 \\  & Access Control [123] & 2020 & J & 30 & 4 \\
32 & Droplet: Decentralized Authorisation and Access Control for Encrypted Data & 2020 & J & 34 & 219 \\  & Streams [17] & 2020 & C & 4 & / \\
33 & Reliable Task Management Based on a Smart Contract for Runtime Verification & 2021 & C & 1 & / \\
34 & User-Managed Access Delegation for Blockchain-driven IoT Services [125] & 2020 & C & 5 & / \\
35 & Delegated Device Attestation for IoT [96] & 2021 & C & 1 & / \\
36 & A Proxy Signature-Based Swarm Drone Authentication With Leader Selection in 5G Networks [126] & 2022 & J & 10 & 204 \\  & Perils and Mitigation of Security Risks of Cooperation in Mobile-as-a-Gateway & 2022 & C & 1 & / \\
37 & IoT [18] & 2022 & C & 1 & / \\
38 & Securing Smart Home IoT Systems with Attribute-Based Access Control [127] & 2022 & C & 5 & / \\
39 & A Blockchain-Based Framework for Scalable and Trustless Delegation of Cyber & 2023 & C & 1 & / \\
30 & Threat Intelligence [106] & 2023 & J & 2 & 5 \\
40 & An accessed control scheme for distributed IoT based on adaptive trust evaluation and blockchain [128] & 2023 & J & 1 & 54 \\
41 & An extended Attribute-based access control with controlled delegation in IoT [129] & 2023 & J & 5 & 149 \\  & Dynamic Secure Access Control and Data Sharing Through Trusted Delegation and Revocation... [130] & 2023 & C & 0 & / \\
43 & Multi-tenant, Decentralized Access Control for the Internet of Things [131] & 2023 & J & 0 & 149 \\  & Multilevel Subgranting by Power of Attorney and OAuth Authorisation Server & 2023 & J & 0 & 149 \\  &... [132] & 2023 & C & 0 & / \\
45 & Smart Blockchain-based Authorisation for Social Internet of Things [12] & 2023 & C & 0 & / \\
46 & Flexible and Fine-grained Access Control for EHR in Blockchain-assisted & 2024 & J & 0 & 149 \\  & E-healthcare Systems [133] & 2025 & C & 2 & / \\
47 & Privacy-Preserving Fine-Grained Data Sharing With Dynamic Service for the & 2025 & C & 2 & / \\  & Cloud-Edge IoT [134] & & & & \\ \hline \hline \multicolumn{6}{c}{**Authentication Delegation**} \\ \hline
48 & A Simple Delegation Scheme for RFID Systems (SiDeS) [49] & 2007 & C & 14 & / \\
49 & End-to-end transport-layer security for Internet-integrated sensing applications with... [47] & 2013 & J & 11 & 9 \\
50 & Towards viable certificate-based authentication for the Internet of Things [41] & 2013 & C & 91 & / \\
51 & Delegation-based authentication and authorisation for the IP-based Internet of Things [100] & 2014 & C & 102 & / \\
52 & Lightweight secure communication for CoAP-enabled Internet of Things using delegated DTLS... [38] & 2014 & C & 21 & / \\
53 & An OAuth based authentication mechanism for IoT networks [39] & 2015 & C & 39 & / \\
54 & ESSE: Efficient Secure Session Establishment for Internet-Integrated Wireless Sensor Networks [101] & 2015 & J & 20 & 65 \\
55 & IoT-OAS: An OAuth-Based Authorisation Service Architecture for Secure Services in IoT Scenarios [40] & 2015 & J & 174 & 145 \\
56 & SEA: A Secure and Efficient Authentication and Authorisation Architecture for IoT-Based Healthcare... [42] & 2015 & J & 222 & / \\
57 & Toward a Lightweight Authentication and Authorisation Framework for Smart Objects [135] & 2015 & J & 111 & 251 \\
58 & An Authentication and Key Management Mechanism for Resource Constrained Devices... [45] & 2017 & J & 22 & 219 \\
59 & IoT-Cloud collaboration to establish a secure connection for lightweight devices [48] & 2017 & J & 25 & 98 \\ \hline \hline \end{tabular}