BFR-SE: A Blockchain-Based Fair and Reliable Searchable Encryption Scheme for IoT with Fine-Grained Access Control in Cloud Environment

Table 2

Functional comparison between BFR-SE and other related searchable encryption schemes.

	BFR-SE	Ref. [20]	Ref. [21]	Ref. [29]	Ref. [30]
Fairness	Yes	No	No	Yes	Yes
Reliability	Strong	Weak	Weak	No	No
Privacy protection	Strong	Strong	Strong	Weak	Weak
Multikeyword search	Yes	Yes	No	No	Yes
Suitable for multiusers	Yes	No	Yes	Yes	Yes
Fine-grained access control	Yes	No	Yes	No	No
Practicability	Yes	Yes	Yes	No	No