Increasing lifetime of cryptographic keys on smartphone platforms with the controlled randomness protocol

Artemios G. Voyiatzis, Kyriakos G. Stefanidis, Dimitrios N. Serpanos

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

A significant design parameter for secure embedded systems is the performance of the cryptographic algorithms implementation. We present a performance analysis on the same hardware of the cryptographic libraries available on the Google Android 2.2 and Microsoft Windows Phone 7 smartphone platforms and show that they exhibit quite different characteristics. This is an important consideration for designing multi-platform, security-aware applications. The use of cryptography requires mechanisms for handling the cryptographic keys. This is a hard-to-address and error-prone procedure, especially in systems with intermittent connectivity. The previously proposed Control Randomness Protocol (CRP) reduces the need for frequent key refreshing and extends the useful lifetime of a given set of keys. We present SCRP, an adaptation of the CRP for the smartphone environment. We show that SCRP achieves an adjustable security level in a fraction of computation and communication overhead.

Original languageEnglish
Title of host publicationProceedings of the Workshop on Embedded Systems Security, WESS'11
DOIs
Publication statusPublished - 1 Dec 2011
Event6th Workshop on Embedded Systems Security, WESS'11 - Taipei, Taiwan, Province of China
Duration: 9 Oct 201114 Oct 2011

Publication series

NameProceedings of the Workshop on Embedded Systems Security, WESS'11

Other

Other6th Workshop on Embedded Systems Security, WESS'11
CountryTaiwan, Province of China
CityTaipei
Period9/10/1114/10/11

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Keywords

  • CRP
  • Controlled randomness
  • Cryptography
  • Smartphone

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Hardware and Architecture
  • Safety, Risk, Reliability and Quality

Cite this

Voyiatzis, A. G., Stefanidis, K. G., & Serpanos, D. N. (2011). Increasing lifetime of cryptographic keys on smartphone platforms with the controlled randomness protocol. In Proceedings of the Workshop on Embedded Systems Security, WESS'11 [1] (Proceedings of the Workshop on Embedded Systems Security, WESS'11). https://doi.org/10.1145/2072274.2072275