Earticle

초록

영어

Side Channel Attacks are known to be effective in cracking secret keys utilized in smart cards, electronic passports, and e-ID cards. A combination of masking and shuffling methods has been proposed as a practical countermeasure to such attacks. Using a template attack (TA), S. Tillich recently analyzed an AES using masking and shuffling techniques with a biased-mask attack technique. To apply this method, however, we need to collect the template information on the masking value in advance. Moreover, this method requires knowing the exact time position of the target masking value for a higher probability of success. In this paper, we suggest a new practical method called a Biasing Power Analysis (BPA) to find a secret key used in an AES based on a masking-shuffling method without the use of the time position and template information of the masking value. We conducted an experiment on a BPA attack against a 128-bit AES secret key based on a masking-shuffling method operating on an MSP430 chip and succeeded in finding the entire secret key. The results of this study can be utilized for next-generation ID cards to verify their physical safety.

목차

Abstract
 1. Introduction
 2. Biased-power Analysis
  2.1. Classification Method using the Power Bias
  2.2. Biased-power Analysis at the Masking Position
 3. Experiment Environment and Analysis Results
  3.1. Experiment Environment
  3.2. Experimental Results
  3.3 Comparison between the Second CPA Analysis and BPA Analysis
 4. Conclusion
 Acknowledgements
 References

키워드

저자

• Jong-Won_Cho [ Korea System Assurance Inc., Kookmin University ]
• Dong-Guk Han [ Korea System Assurance Inc., Kookmin University ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  International Journal of Security and Its Applications

• 간기

  격월간

• pISSN

  1738-9976

• 수록기간

  2008~2016

• 등재여부

  SCOPUS

• 십진분류

  KDC 505 DDC 605