Achieving short ciphertexts or short secret-keys for adaptively secure general inner-product encryption

Tatsuaki Okamoto*, Katsuyuki Takashima

*この研究の対応する著者

研究成果: Article査読

25 被引用数 (Scopus)

抄録

In this paper, we present two non-zero inner-product encryption (NIPE) schemes that are adaptively secure under a standard assumption, the decisional linear (DLIN) assumption, in the standard model. One of the proposed NIPE schemes features constant-size ciphertexts and the other features constant-size secret-keys. Our NIPE schemes imply an identity-based revocation (IBR) system with constant-size ciphertexts or constant-size secret-keys that is adaptively secure under the DLIN assumption. Any previous IBR scheme with constant-size ciphertexts or constant-size secret-keys was not adaptively secure in the standard model. This paper also presents two zero inner-product encryption (ZIPE) schemes each of which has constant-size ciphertexts or constant-size secret-keys and is adaptively secure under the DLIN assumption in the standard model. They imply an identity-based broadcast encryption system with constant-size ciphertexts or constant-size secret-keys that is adaptively secure under the DLIN assumption. We also extend the proposed ZIPE schemes in two directions, one is a fully-attribute-hiding ZIPE scheme with constant-size secret-keys, and the other a hierarchical ZIPE scheme with constant-size ciphertexts.

本文言語English
ページ(範囲)725-771
ページ数47
ジャーナルDesigns, Codes, and Cryptography
77
2-3
DOI
出版ステータスPublished - 2015 12 3
外部発表はい

ASJC Scopus subject areas

  • コンピュータ サイエンスの応用
  • 応用数学

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