Scan-based attack against elliptic curve cryptosystems

Ryuta Nara*, Nozomu Togawa, Masao Yanagisawa, Tatsuo Ohtsuki

*この研究の対応する著者

研究成果: Conference contribution

60 被引用数 (Scopus)

抄録

Scan-based attacks are techniques to decipher a secret key using scanned data obtained from a cryptography circuit. Public-key cryptography, such as RSA and elliptic curve cryptosystem (ECC), is extensively used but conventional scan-based attacks cannot be applied to it, because it has a complicated algorithm as well as a complicated architecture. This paper proposes a scan-based attack which enables us to decipher a secret key in ECC. The proposed method is based on detecting intermediate values calculated in ECC. By monitoring the 1-bit sequence in the scan path, we can find out the register position specific to the intermediate value in it and we can know whether this intermediate value is calculated or not in the target ECC circuit. By using several intermediate values, we can decipher a secret key. The experimental results demonstrate that a secret key in a practical ECC circuit can be deciphered using 29 points over the elliptic curve E within 40 seconds.

本文言語English
ホスト出版物のタイトル2010 15th Asia and South Pacific Design Automation Conference, ASP-DAC 2010
ページ407-412
ページ数6
DOI
出版ステータスPublished - 2010
イベント2010 15th Asia and South Pacific Design Automation Conference, ASP-DAC 2010 - Taipei, Taiwan, Province of China
継続期間: 2010 1月 182010 1月 21

出版物シリーズ

名前Proceedings of the Asia and South Pacific Design Automation Conference, ASP-DAC

Conference

Conference2010 15th Asia and South Pacific Design Automation Conference, ASP-DAC 2010
国/地域Taiwan, Province of China
CityTaipei
Period10/1/1810/1/21

ASJC Scopus subject areas

  • コンピュータ サイエンスの応用
  • コンピュータ グラフィックスおよびコンピュータ支援設計
  • 電子工学および電気工学

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