High-Entropy Visual Identiﬁcation for Touch Screen Devices

Nathaniel Wesley Filardo; Giuseppe Ateniese

Paper 2011/359

High-Entropy Visual Identiﬁcation for Touch Screen Devices

Nathaniel Wesley Filardo and Giuseppe Ateniese

Abstract

We exhibit a system for improving the quality of user-derived keying material on touch-screen devices. We allow a device to recover previously generated, highly entropic data suitable for use as (part of) a strong secret key from a user’s act of identifying to the device. Our system uses visual cryptography [22], using no additional electronics and no memorization on the part of the user. Instead, we require the use of a transparency overlaid on the touch-screen. Our scheme is similar to the identification scheme of [23] but tailored for constrained, touch-screen displays.

Metadata

Available format(s): PDF
Category: Applications
Publication info: Published elsewhere. The 8th International Conference on Information Security Practice and Experience (ISPEC 2012). LNCS 7232 Springer-Verlag, 2012.
Keywords: visual cryptography user identification
Contact author(s): nwf @ cs jhu edu
History: 2012-06-15: revised; 2011-07-06: received; See all versions
Short URL: https://ia.cr/2011/359
License: CC BY

BibTeX

@misc{cryptoeprint:2011/359,
      author = {Nathaniel Wesley Filardo and Giuseppe Ateniese},
      title = {High-Entropy Visual Identiﬁcation for Touch Screen Devices},
      howpublished = {Cryptology {ePrint} Archive, Paper 2011/359},
      year = {2011},
      url = {https://eprint.iacr.org/2011/359}
}