An Improved Dynamic ID-Based Remote User Authentication with Key Agreement Scheme

Table 1

Comparison of security properties.

	Wang et al.’s scheme [9]	Wen et al.’s scheme [14]	Proposed scheme
User anonymity	No	No	Yes
Insider attack	No	No	Yes
Impersonation attack	No	Yes	Yes
Replay attack	No	No	Yes
Perfect forward secrecy	No	No	Yes
Key agreement	No	Yes	Yes

Yes: supported and No: not supported.