INFINITE ALPHABET PASSWORDS - A Unified Model for a Class of Authentication Systems

Marcia Gibson, Marc Conrad, Carsten Maple

2010

Abstract

In the paper we propose a formal model for class of authentication systems termed, “Infinite Alphabet Password Systems” (IAPs). We define such systems as those that use a character set for the construction of the authentication token that is theoretically infinite, only bound by practical implementation restrictions. We find that the IAP architecture can feasibly be adapted for use in many real world situations, and may be implemented using a number of system architectures and cryptographic protocols. A security analysis is conducted on an implementation of the model that utilizes images for its underlying alphabet. As a result of the analysis we find that IAPs can offer security benefits over traditional alphanumeric password schemes. In particular some of the significant problems concerning phishing, pharming, replay, dictionary and offline brute force attacks are mitigated.

Paper Citation

in Harvard Style

Gibson M., Conrad M. and Maple C. (2010). INFINITE ALPHABET PASSWORDS - A Unified Model for a Class of Authentication Systems . In Proceedings of the International Conference on Security and Cryptography - Volume 1: SECRYPT, (ICETE 2010) ISBN 978-989-8425-18-8, pages 94-99. DOI: 10.5220/0002986200940099

in Bibtex Style

@conference{secrypt10,
author={Marcia Gibson and Marc Conrad and Carsten Maple},
title={INFINITE ALPHABET PASSWORDS - A Unified Model for a Class of Authentication Systems},
booktitle={Proceedings of the International Conference on Security and Cryptography - Volume 1: SECRYPT, (ICETE 2010)},
year={2010},
pages={94-99},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0002986200940099},
isbn={978-989-8425-18-8},
}

in EndNote Style

TY - CONF
JO - Proceedings of the International Conference on Security and Cryptography - Volume 1: SECRYPT, (ICETE 2010)
TI - INFINITE ALPHABET PASSWORDS - A Unified Model for a Class of Authentication Systems
SN - 978-989-8425-18-8
AU - Gibson M.
AU - Conrad M.
AU - Maple C.
PY - 2010
SP - 94
EP - 99
DO - 10.5220/0002986200940099