An anonymous authenticated key-agreement scheme for multi-server infrastructure

Table 2 Comparison of security parameters

Scheme:	Proposed	Liao and Wang [20]	Hsiang and Shih [21]	Lee et al. [22]	Chen and Lee [23]	Irshad et al. [25]
Immune to smart card stolen attack	Yes	Yes	Yes	Yes	No	Yes
Efficient password modification	Yes	Yes	Yes	No	No	Yes
Ensuring anonymity	Yes	Yes	Yes	Yes	Yes	No
Immune to insider attack	Yes	No	Yes	Yes	Yes	Yes
Immune to trace attack	Yes	Yes	Yes	Yes	No	Yes
Immune to impersonation attack	Yes	No	No	No	No	Yes
Support mutual authentication	Yes	No	No	No	Yes	Yes
Repair ability	Yes	Yes	No	No	Yes	Yes
Supports session key security	Yes	Yes	Yes	Yes	No	Yes
Immune to offline password guessing attack	Yes	Yes	Yes	No	Yes	Yes
Immune to KCI attack	Yes	Yes	No	Yes	No	Yes