New proof techniques for DLIN-based adaptively secure attribute-based encryption

Katsuyuki Takashima*

*この研究の対応する著者

研究成果: Conference contribution

7 被引用数 (Scopus)

抄録

We propose adaptively secure attribute-based encryption (ABE) schemes for boolean formulas over large universe attributes from the decisional linear (DLIN) assumption, which allow attribute reuse in an available formula without the previously employed redundant multiple encoding technique. Thus our KP-(resp. CP-)ABE has non-redundant ciphertexts (resp. secret keys). For achieving the results, we develop a new encoding method for access policy matrix for ABE, by decoupling linear secret sharing (LSS) into its matrix and randomness, and partially randomizing the LSS shares in simulation. The new techniques are of independent interest and we expect it will find another application than ABE.

本文言語English
ホスト出版物のタイトルInformation Security and Privacy - 22nd Australasian Conference, ACISP 2017, Proceedings
編集者Josef Pieprzyk, Suriadi Suriadi
出版社Springer Verlag
ページ85-105
ページ数21
ISBN(印刷版)9783319600543
DOI
出版ステータスPublished - 2017
外部発表はい
イベント22nd Australasian Conference on Information Security and Privacy, ACISP 2017 - Auckland, New Zealand
継続期間: 2017 7 32017 7 5

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)
10342 LNCS
ISSN(印刷版)0302-9743
ISSN(電子版)1611-3349

Conference

Conference22nd Australasian Conference on Information Security and Privacy, ACISP 2017
国/地域New Zealand
CityAuckland
Period17/7/317/7/5

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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