Table 4.

Security challenges in the existing literature comparative analysis with our paper.

Scheme name	Authentication Challenges	CIA Challenges	Authorization Challenges	Connectivity Challenges	Interoperability Challenges	Privacy Challenges	Security Challenges
Abir et al. (2020)	Yes	Partial	Yes	No	No	Yes	Yes
Ahmed et al. (2018)	Yes	Yes	No	No	Yes	No	Yes
Marques et al. (2019)	No	Partial	Yes	No	No	Yes	Yes
Somasundaram and Thirugnanam (2020)	Yes	Yes	Yes	No	No	Yes	Yes
Baker et al. (2017)	No	No	Yes	Yes	No	Yes	Yes
our scheme	Yes	Yes	Yes	Yes	Yes	Yes	Yes