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Biometric unique authentication approach on encrypted message provides a totally secured information delivery without any need to hide any password or secret key. The authors present the usage of biometrics technique in asymmetric cryptographic domain where they protect secret key involved in cryptographic with the help of fuzzy vault created by randomizing the palm print feature with the secret key. This paper therefore uses the polynomial construction on the secret key using appropriate mapping function and taking the projection of palm print feature on the polynomial constructed which together makes the fuzzy vault.
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