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Title:
Cryptanalysis on `Robust Biometrics-Based Authentication Scheme for Multi-server Environment’
Authors: Vanga Odelu, Ashok Kumar Das, Adrijit Goswami
Abstract:Authentication plays an important role in an open network environment in order to authenticate two communication parties among each other. Authentication protocols should protect the sensitive information against a malicious adversary by providing a variety of services, such as authentication, user credentials’ privacy, user revocation and re-registration, when the smart card is lost/stolen or the private key of a user or a server is revealed. Unfortunately, most of the existing multi-server authentication schemes proposed in the literature do not support the fundamental security property such as the revocation and re-registration with same identity. Recently, in 2014, He and Wang proposed a robust and efficient multi-server authentication scheme using biometrics-based smart card and elliptic curve cryptography (ECC). In this paper, we analyze the He-Wang’s scheme and show that He-Wang’s scheme is vulnerable to a known session-specific temporary information attack and impersonation attack. In addition, we show that their scheme does not provide strong user’s anonymity. Furthermore, He-Wang’s scheme cannot support the revocation and re-registration property. Apart from these, He-Wang’s scheme has some design flaws, such as wrong password login and its consequences, and wrong password update during password change phase.
ePrint: https://eprint.iacr.org/2014/715
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