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Using trusted computing for privacy preserving keystroke-based authentication in smartphones

Abstract

Smartphones are increasingly being used to store personal information as well as to access sensitive data from the Internet and the cloud. Establishment of the identity of a user requesting information from smartphones is a prerequisite for secure systems in such scenarios. In the past, keystroke-based user identification has been successfully deployed on production-level mobile devices to mitigate the risks associated with naïve username/password based authentication. However, these approaches have two major limitations: they are not applicable to services where authentication occurs outside the domain of the mobile device—such as web-based services; and they often overly tax the limited computational capabilities of mobile devices. In this paper, we propose a protocol for keystroke dynamics analysis which allows web-based applications to make use of remote attestation and delegated keystroke analysis. The end result is an efficient keystroke-based user identification mechanism that strengthens traditional password protected services while mitigating the risks of user profiling by collaborating malicious web services. We present a prototype implementation of our protocol using the popular Android operating system for smartphones.

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Correspondence to Tamleek Ali.

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Nauman, M., Ali, T. & Rauf, A. Using trusted computing for privacy preserving keystroke-based authentication in smartphones. Telecommun Syst 52, 2149–2161 (2013). https://doi.org/10.1007/s11235-011-9538-9

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Keywords

  • Authentication
  • Smartphones
  • Android
  • Trusted computing
  • Remote attestation