Cryptanalysis and Enhancement of an Authenticated Key Agreement Protocol for Dew-Assisted IoT Systems

Table 4

Comparison of security features with SMDAS protocol.

Security features	Scheme
	[27]	[28]	SMDAS	e-SMDAS
Mutual authentication	No	Yes	Yes	Yes
Session key agreement	Yes	Yes	Yes	Yes
Replay attack resistance	Yes	No	Yes	Yes
User impersonation attack resistance	No	No	Yes	Yes
User anonymity	No	Yes	No	Yes
Forward security	Yes	Yes	No	Yes