Paper 2024/919
Multi-Input Functional Encryption for Unbounded Inner Products
Abstract
In this work, we propose a construction for $ Multi~Input~Inner ~Product ~Encryption$ (MIPFE) that can handle vectors of variable length in different encryption slots. This construction is the first of its kind, as all existing MIPFE schemes allow only equal length vectors. The scheme is constructed in the private key setting, providing privacy for both message as well as the function, thereby achieving the so-called $full-hiding$ security. Our MIPFE scheme uses bilinear groups of prime order and achieves security under well studied cryptographic assumptions, namely, the symmetric external Diffie-Hellman assumption.
Note: This article is published in the 17th International Conference on Provable Security, ProvSec 2023, Wuhan, China
Metadata
- Available format(s)
-
PDF
- Category
- Cryptographic protocols
- Publication info
- Published elsewhere. Minor revision. 17th International Conference on Provable and Practical Security, ProvSec 2023
- DOI
- 10.1007/978-3-031-45513-1_15
- Keywords
- Functional encryption (FE)inner-product FEmulti- input FEunbounded vectors
- Contact author(s)
-
bishnu_charan_behera @ iitkgp ac in
somindu @ cse iitkgp ac in - History
- 2024-06-10: approved
- 2024-06-09: received
- See all versions
- Short URL
- https://ia.cr/2024/919
- License
-
CC BY
BibTeX
@misc{cryptoeprint:2024/919,
author = {Bishnu Charan Behera and Somindu C. Ramanna},
title = {Multi-Input Functional Encryption for Unbounded Inner Products},
howpublished = {Cryptology ePrint Archive, Paper 2024/919},
year = {2024},
doi = {10.1007/978-3-031-45513-1_15},
note = {\url{https://eprint.iacr.org/2024/919}},
url = {https://eprint.iacr.org/2024/919}
}
