Enhancing reactive countermeasure against em attacks with low overhead

Daisuke Ishihata, Naofumi Homma, Yu Ichi Hayashi, Noriyuki Miura, Daisuke Fujimoto, Makoto Nagata, Takafumi Aoki

研究成果: Conference contribution

3 被引用数 (Scopus)

抄録

This paper proposes a method for improving Electromagnetic (EM) attack sensor precision for countering a wider range of EM attacks on cryptographic modules. During an attack, an EM attack sensor determines the proximity of a probe to an LSI chip by detecting a change in the mutual inductance between the probe and the LSI chip from the shift in the oscillation frequency of the LC oscillator of the sensor. The subsequent would-be attack is thwarted by instantaneous detection of the proximity of the probe. We show that smaller oscillation frequency shifts can be detected by extending the time required for the detection process, and demonstrate that extending the time enables attacks to be detected even when they are coming from the back surface of the LSI chip, which was earlier difficult to achieve. We then examine the possibility of operating the crypto core and sensor simultaneously as a method for reducing the performance overheads of the proposed system. Through evaluation experiments, we show that the simultaneous operation of the crypto core and sensor has no significant effect on the precision of probe detection. Furthermore, we discuss an alternative method for improving the detection sensitivity by a time-to-digital converter without extending the detection process time.

本文言語English
ホスト出版物のタイトル2017 IEEE International Symposium on Electromagnetic Compatibility, Signal and Power Integrity, EMCSI 2017 - Proceedings
出版社Institute of Electrical and Electronics Engineers Inc.
ページ399-404
ページ数6
ISBN(電子版)9781538622308
DOI
出版ステータスPublished - 2017 10 20
イベント2017 IEEE International Symposium on Electromagnetic Compatibility, Signal and Power Integrity, EMCSI 2017 - Washington, United States
継続期間: 2017 8 72017 8 11

出版物シリーズ

名前IEEE International Symposium on Electromagnetic Compatibility
ISSN(印刷版)1077-4076
ISSN(電子版)2158-1118

Other

Other2017 IEEE International Symposium on Electromagnetic Compatibility, Signal and Power Integrity, EMCSI 2017
国/地域United States
CityWashington
Period17/8/717/8/11

ASJC Scopus subject areas

  • 凝縮系物理学
  • 電子工学および電気工学

フィンガープリント

「Enhancing reactive countermeasure against em attacks with low overhead」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル