Date: 2010/2/26 (Fri) 15F30`17F00
Place: Collaboration Room #7 (Information Science Building, 5th floor)
Name: Mitsuru Matsui
    Mitsubishi Electric Ltd.
Title: Secure Biometric Authentication Using 2-DNF Homomorphi Encryption
Abstract:
This presentation focuses on a secure biometric authentication protocol
that can authenticate users using encrypted biometric information. The
system is a three party model which consists of a user, an
authentication server and a decryption center. Previously, a similar
protocol was known which uses conventional homomorphic encryption
schemes such as Paillier encryption scheme. In that protocol, however,
an interaction was required between the user and the server. We propose
a new protocol which uses 2-DNF homomorphic encryption schemes without
the interaction using Okamoto-Takashima homomorphic encryption scheme
that provides 2-DNF homomorphism. The protocol is proved secure in the
semi-honest model.
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