CCA-secure keyed-fully homomorphic encryption

Junzuo Lai, Robert H. Deng, Changshe Ma, Kouichi Sakurai, Jian Weng

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

7 被引用数 (Scopus)

抄録

To simultaneously achieve CCA security and homomorphic property for encryption, Emura et al. introduced a new cryptographic primitive named keyed-homomorphic encryption, in which homomorphic ciphertext manipulations can only be performed by someone holding a devoted evaluation key which, by itself, does not enable decryption. A keyed-homomorphic encryption scheme should provide CCA2 security when the evaluation key is unavailable to the adversary and remain CCA1-secure when the evaluation key is exposed. While existing keyedhomomorphic encryption schemes only allow simple computations on encrypted data, our goal is to construct CCA-secure keyed-fully homomorphic encryption (keyed-FHE) capable of evaluating any functions on encrypted data with an evaluation key. In this paper, we first introduce a new primitive called convertible identity-based fully homomorphic encryption (IBFHE), which is an IBFHE with an additional transformation functionality, and define its security notions. Then, we present a generic construction of CCA-secure keyed-FHE from IND-sID-CPA-secure convertible IBFHE and strongly EUF-CMA-secure signature. Finally, we propose a concrete construction of IND-sID-CPA-secure convertible IBFHE, resulting in the first CCAsecure keyed-FHE scheme in the standard model.

本文言語英語
ホスト出版物のタイトルPublic-Key Cryptography - PKC 2016 - 19th IACR International Conference on Practice and Theory in Public-Key Cryptography, Proceedings
編集者Giuseppe Persiano, Chen-Mou Cheng, Kai-Min Chung, Bo-Yin Yang
出版社Springer Verlag
ページ70-98
ページ数29
ISBN(印刷版)9783662493830
DOI
出版ステータス出版済み - 2016
イベント19th IACR International Conference on Practice and Theory in Public-Key Cryptography, PKC 2016 - Taipei, 台湾省、中華民国
継続期間: 3 6 20163 9 2016

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)
9614
ISSN(印刷版)0302-9743
ISSN(電子版)1611-3349

その他

その他19th IACR International Conference on Practice and Theory in Public-Key Cryptography, PKC 2016
国/地域台湾省、中華民国
CityTaipei
Period3/6/163/9/16

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)

フィンガープリント

「CCA-secure keyed-fully homomorphic encryption」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル