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 EncryptionFunctional EncryptionQuadratic 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
Creative Commons Attribution
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}
}
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