A local EM-analysis attack resistant cryptographic engine with fully-digital oscillator-based tamper-access sensor

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

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

17 Citations (Scopus)

Abstract

A cryptographic engine (CE) resistant to local EM-analysis attacks (L-EMAs) is developed. An LC-oscillator-based tamper-access sensor detects a micro EM-probe approach and therefore protects the secret key information. A fully-digital sensor circuit with a reference-free dual-coil sensing scheme and a ring-oscillator-based one-step digital sensor calibration reduces the sensor area overhead to 1.6%. The sensor intermittently operates in interleave between CE operations, which saves power and performance penalty to 7.6% and 0.2%. A prototype in 0.18μm CMOS successfully demonstrates L-EMA attack detection and key protection for the first time.

Original languageEnglish
Title of host publication2014 Symposium on VLSI Circuits, VLSIC 2014 - Digest of Technical Papers
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Print)9781479933273
DOIs
Publication statusPublished - 2014
Event28th IEEE Symposium on VLSI Circuits, VLSIC 2014 - Honolulu, HI, United States
Duration: 2014 Jun 102014 Jun 13

Publication series

NameIEEE Symposium on VLSI Circuits, Digest of Technical Papers

Other

Other28th IEEE Symposium on VLSI Circuits, VLSIC 2014
CountryUnited States
CityHonolulu, HI
Period14/6/1014/6/13

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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