[Retracted] Biometric Authentication for Intelligent and Privacy-Preserving Healthcare Systems

Table 2

Comparison results for privacy and security characteristic features.

Features	[25]	[26]	[27]	[10]
User anonymity	Yes	Yes	No	No
Mutual authentication	Yes	Yes	Yes	Yes
Off-line PW guessing attack	Yes	No	No	No
Impersonation attack	Yes	Yes	Yes	No
Replay attack	Yes	No	No	Yes
Provides formal security	Yes	Yes	No	No