In this paper, we propose a secure biometric based authentication scheme which fundamentally relies on the use of a robust hash function. The robust hash function is a one-way transformation tailored specifically for each user based on their biometrics. The function is designed as a sum of properly weighted and shifted Gaussian functions to ensure the security and privacy of biometric data. We discuss various design issues such as scalability, collision-freeness and security. We also provide test results obtained by applying the proposed scheme to ORL face database by designating the biometrics as singular values of face images. Categories and Subject Descriptors E.m [Data]: Miscellaneous – biometrics, security, robust hashing. General Terms Security, Design, Human Factors. Keywords Authentication, Biometrics, Robust Hashing, Security, Privacy.
Yagiz Sutcu, Husrev T. Sencar, Nasir D. Memon