Registered Functional Encryption for Quadratic Functions from MDDH

Qiaohan Chu; Li Lin; Chen Qian; Jie Chen

Paper 2024/177

Registered Functional Encryption for Quadratic Functions from MDDH

Qiaohan Chu

, Shanghai Key Laboratory of Trustworthy Computing, Software Engineering Institute, East China Normal University, Shanghai, China

Li Lin

, Ant Group, China

Chen Qian

, School of Cyber Science and Technology, Shandong University, Qingdao, Shandong, China

Jie Chen

, Shanghai Key Laboratory of Trustworthy Computing, Software Engineering Institute, East China Normal University, Shanghai, China

Abstract

We present a Registered Functional Encryption (RFE) scheme for inner product and a RFE scheme for quadratic functions based on pairings and relying on the Matrix Decision Diffie-Hellman (MDDH) assumption and bilateral MDDH assumption. Previously, RFE is only known to be constructed from indistinguishability obfuscation (iO) in Francati-Friolo-Maitra-Malavolta-Rahimi-Venturi [Asiacrypt '23].

Metadata

Available format(s): PDF
Category: Public-key cryptography
Publication info: Preprint.
Keywords: Registered Encryption Functional Encryption Quadratic Functions
Contact author(s): 52205902004 @ stu ecnu edu cn
felix ll @ antgroup com
chen qian @ sdu edu cn
s080001 @ e ntu edu sg
History: 2024-02-06: approved; 2024-02-06: received; See all versions
Short URL: https://ia.cr/2024/177
License: CC BY

BibTeX

@misc{cryptoeprint:2024/177,
      author = {Qiaohan Chu and Li Lin and Chen Qian and Jie Chen},
      title = {Registered Functional Encryption for Quadratic Functions from {MDDH}},
      howpublished = {Cryptology {ePrint} Archive, Paper 2024/177},
      year = {2024},
      url = {https://eprint.iacr.org/2024/177}
}