Efficiency and accuracy improvements of secure floating-point addition over secret sharing

Kota Sasaki, Koji Nuida

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

抄録

In secure multiparty computation (MPC), floating-point numbers should be handled in many potential applications, but these are basically expensive. In particular, for MPC based on secret sharing (SS), the floating-point addition takes many communication rounds though the addition is the most fundamental operation. In this paper, we propose an SS-based two-party protocol for floating-point addition with 13 rounds (for single/double precision numbers), which is much fewer than the milestone work of Aliasgari et al. in NDSS 2013 (34 and 36 rounds, respectively) and also fewer than the state of the art in the literature. Moreover, in contrast to the existing SS-based protocols which are all based on “roundTowardZero” rounding mode in the IEEE 754 standard, we propose another protocol with 15 rounds which is the first result realizing more accurate “roundTiesToEven” rounding mode. We also discuss possible applications of the latter protocol to secure Validated Numerics (a.k.a. Rigorous Computation) by implementing a simple example.

本文言語英語
ホスト出版物のタイトルAdvances in Information and Computer Security - 15th International Workshop on Security, IWSEC 2020, Proceedings
編集者Kazumaro Aoki, Akira Kanaoka
出版社Springer Science and Business Media Deutschland GmbH
ページ77-94
ページ数18
ISBN(印刷版)9783030582074
DOI
出版ステータス出版済み - 2020
外部発表はい
イベント15th International Workshop on Security, IWSEC 2020 - Fukui, 日本
継続期間: 9 2 20209 4 2020

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)
12231 LNCS
ISSN(印刷版)0302-9743
ISSN(電子版)1611-3349

会議

会議15th International Workshop on Security, IWSEC 2020
国/地域日本
CityFukui
Period9/2/209/4/20

All Science Journal Classification (ASJC) codes

  • 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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