Abstract
Improving the countermeasures against side-channel attacks (SCAs) increases the cost of both designing the countermeasures and evaluating SCA resistance. This may force cryptographic ICs to remain vulnerable. The increased cost is due to an indispensable procedure where a large number of side-channel traces need to be analyzed in order to evaluate the SCA resistance. In this work, a low-cost method to design and evaluate countermeasures using the signal-to-noise ratio (SNR) of side-channel traces as design and evaluation criteria is proposed. The method combines two existing methods: A prediction method of correlation coefficients between side-channel traces and a power model based on the SNR of the side-channel traces, and an estimation method of the number of traces needed to disclose the secret key based on the correlation coefficients. We construct a method to measure the SNR of side-channel traces and validate it for the design and evaluation criteria. In our method, the SNR is first calculated from signal and noise variances extracted from side-channel traces by increasing the number of averaging in side-channel trace measurements, and then the correlation coefficients and the number of traces for key-disclose are estimated on the basis of the calculated SNR. We confirmed that the estimated correlation coefficient and the number of traces for key-disclose were in good agreement with the corresponding measured ones. This result demonstrates that the proposed method can accurately measure the SNR of side-channel traces.
| Original language | English |
|---|---|
| Title of host publication | 2017 Asia-Pacific International Symposium on Electromagnetic Compatibility, APEMC 2017 |
| Publisher | Institute of Electrical and Electronics Engineers Inc. |
| Pages | 93-95 |
| Number of pages | 3 |
| ISBN (Electronic) | 9781538639122 |
| DOIs | |
| Publication status | Published - Jul 11 2017 |
| Event | 2017 Asia-Pacific International Symposium on Electromagnetic Compatibility, APEMC 2017 - Seoul, Korea, Republic of Duration: Jun 20 2017 → Jun 23 2017 |
Other
| Other | 2017 Asia-Pacific International Symposium on Electromagnetic Compatibility, APEMC 2017 |
|---|---|
| Country | Korea, Republic of |
| City | Seoul |
| Period | 6/20/17 → 6/23/17 |
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Keywords
- AES
- CPA
- Evaluation cost
- Side-channel attack
- Signal-to-noise ratio
ASJC Scopus subject areas
- Instrumentation
- Radiation
Cite this
Signal-to-noise ratio measurements of side-channel traces for establishing low-cost countermeasure design. / Yano, Yusuke; Iokibe, Kengo; Toyota, Yoshitaka; Teshima, Toshiaki.
2017 Asia-Pacific International Symposium on Electromagnetic Compatibility, APEMC 2017. Institute of Electrical and Electronics Engineers Inc., 2017. p. 93-95 7975433.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Signal-to-noise ratio measurements of side-channel traces for establishing low-cost countermeasure design
AU - Yano, Yusuke
AU - Iokibe, Kengo
AU - Toyota, Yoshitaka
AU - Teshima, Toshiaki
PY - 2017/7/11
Y1 - 2017/7/11
N2 - Improving the countermeasures against side-channel attacks (SCAs) increases the cost of both designing the countermeasures and evaluating SCA resistance. This may force cryptographic ICs to remain vulnerable. The increased cost is due to an indispensable procedure where a large number of side-channel traces need to be analyzed in order to evaluate the SCA resistance. In this work, a low-cost method to design and evaluate countermeasures using the signal-to-noise ratio (SNR) of side-channel traces as design and evaluation criteria is proposed. The method combines two existing methods: A prediction method of correlation coefficients between side-channel traces and a power model based on the SNR of the side-channel traces, and an estimation method of the number of traces needed to disclose the secret key based on the correlation coefficients. We construct a method to measure the SNR of side-channel traces and validate it for the design and evaluation criteria. In our method, the SNR is first calculated from signal and noise variances extracted from side-channel traces by increasing the number of averaging in side-channel trace measurements, and then the correlation coefficients and the number of traces for key-disclose are estimated on the basis of the calculated SNR. We confirmed that the estimated correlation coefficient and the number of traces for key-disclose were in good agreement with the corresponding measured ones. This result demonstrates that the proposed method can accurately measure the SNR of side-channel traces.
AB - Improving the countermeasures against side-channel attacks (SCAs) increases the cost of both designing the countermeasures and evaluating SCA resistance. This may force cryptographic ICs to remain vulnerable. The increased cost is due to an indispensable procedure where a large number of side-channel traces need to be analyzed in order to evaluate the SCA resistance. In this work, a low-cost method to design and evaluate countermeasures using the signal-to-noise ratio (SNR) of side-channel traces as design and evaluation criteria is proposed. The method combines two existing methods: A prediction method of correlation coefficients between side-channel traces and a power model based on the SNR of the side-channel traces, and an estimation method of the number of traces needed to disclose the secret key based on the correlation coefficients. We construct a method to measure the SNR of side-channel traces and validate it for the design and evaluation criteria. In our method, the SNR is first calculated from signal and noise variances extracted from side-channel traces by increasing the number of averaging in side-channel trace measurements, and then the correlation coefficients and the number of traces for key-disclose are estimated on the basis of the calculated SNR. We confirmed that the estimated correlation coefficient and the number of traces for key-disclose were in good agreement with the corresponding measured ones. This result demonstrates that the proposed method can accurately measure the SNR of side-channel traces.
KW - AES
KW - CPA
KW - Evaluation cost
KW - Side-channel attack
KW - Signal-to-noise ratio
UR - http://www.scopus.com/inward/record.url?scp=85027555743&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85027555743&partnerID=8YFLogxK
U2 - 10.1109/APEMC.2017.7975433
DO - 10.1109/APEMC.2017.7975433
M3 - Conference contribution
AN - SCOPUS:85027555743
SP - 93
EP - 95
BT - 2017 Asia-Pacific International Symposium on Electromagnetic Compatibility, APEMC 2017
PB - Institute of Electrical and Electronics Engineers Inc.
ER -