Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/135196
Title: PRESERVING FRESHNESS AND CONTINUITY IN REMOTE BIOMETRIC AUTHENTICATION
Authors: ANKIT SARKAR
Keywords: authentication, biometric, security
Issue Date: 18-Aug-2016
Citation: ANKIT SARKAR (2016-08-18). PRESERVING FRESHNESS AND CONTINUITY IN REMOTE BIOMETRIC AUTHENTICATION. ScholarBank@NUS Repository.
Abstract: Most remote authentication schemes perform authentication at the beginning of a session but have no way of ensuring whether the current user is still the originally authorised user. Continuous biometric authentication solves this problem by checking the identity of the user continuously. Despite the advances in this field, existing continuous authentication systems remain vulnerable to replay attacks as they do not have mechanisms to check the freshness of the authentication information. We survey the current state of art, compare existing systems and describe their vulnerabilities as well as identify the challenges. Based on these, we propose a model which ensures the freshness and integrity of the authentication data and prevents replay attacks. In addition, we also propose a new challenge response scheme for continuous authentication. We implement a proof-of-concept system and show that it is able to preserve freshness without significantly compromising on usability. Finally we suggest future directions for research.
URI: http://scholarbank.nus.edu.sg/handle/10635/135196
Appears in Collections:Master's Theses (Open)

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