Security Enhanced Anonymous Multiserver Authenticated Key Agreement Scheme Using Smart Cards and Biometrics

Algorithm 3

Smart card attack on Chuang and Chen’s scheme.

(i) gets(steals) user’s smart card.

 ⇒ Extracting the information of smart card.

   (Using SPA and DPA…etc) ⇒ Obtains

(ii) gets and in public channel.

 ⇒

 ⇒

 ⇒

(iii) can compute the session key between and .