On masked galois-field multiplication for authenticated encryption resistant to side channel analysis

研究成果: Conference contribution

3 被引用数 (Scopus)

抄録

This paper presents a side-channel attack on masked Galois-field (GF) multiplication used in authenticated encryptions including AES-GCM and a new countermeasure against the proposed attack. While the previous side-channel attack is likely to recover the full key of GHASH in AES-GCM, no countermeasure has been discussed and evaluated until now. In this paper, we first apply a straightforward masking countermeasure to GF multiplication for GHASH and show that the masked GF multiplication is resistant to the previous attack. We then show the straightforward masked GHASH can be defeated by a new attack utilizing the variance of power trace. The feasibility of the new attack is demonstrated by an experiment with power traces measured from a smart card operating the masked GHASH. Finally, we propose a new masking countermeasure against the proposed attack.

本文言語English
ホスト出版物のタイトルConstructive Side-Channel Analysis and Secure Design - 9th International Workshop, COSADE 2018, Proceedings
編集者Junfeng Fan, Benedikt Gierlichs
出版社Springer Verlag
ページ44-57
ページ数14
ISBN(印刷版)9783319896403
DOI
出版ステータスPublished - 2018
イベント9th International Workshop on Constructive Side-Channel Analysis and Secure Design, COSADE 2018 - Singapore, Singapore
継続期間: 2018 4 232018 4 24

出版物シリーズ

名前Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
10815 LNCS
ISSN(印刷版)0302-9743
ISSN(電子版)1611-3349

Other

Other9th International Workshop on Constructive Side-Channel Analysis and Secure Design, COSADE 2018
国/地域Singapore
CitySingapore
Period18/4/2318/4/24

ASJC Scopus subject areas

  • 理論的コンピュータサイエンス
  • コンピュータ サイエンス(全般)

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