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The Scientific World Journal
/
2014
/
Article
/
Alg 3
/
Research Article
Security Enhanced Anonymous Multiserver Authenticated Key Agreement Scheme Using Smart Cards and Biometrics
Algorithm 2
No perfect forward secrecy on Chuang and Chen’s scheme.
(i)
got
and
in previous public channel.
(ii)
knew one of user’s long-term secret:
⇒
has
and
⇒
⇒
⇒
(iii)
can compute all of previous session key
.