Paper 2024/1295
Identity-Based Encryption from Lattices with More Compactness in the Standard Model
, Shanghai Jiao Tong University, Shanghai Jiao Tong University, Shanghai Jiao Tong University, Heilongjiang University, Shanghai Jiao Tong University, Shanghai Jiao Tong UniversityAbstract
Lattice-based identity-based encryption having both efficiency and provable security in the standard model is currently still a challenging task and has drawn much attention. In this work, we introduce a new IBE construction from NTRU lattices in the standard model, based on the framework proposed by Agrawal, Boneh, and Boyen (EUROCRYPT 2010). Particularly, by introducing the NTRU trapdoor and the RingLWE computational assumption, we remove a crux restriction of the column number and obtain a more compact IBE construction in the standard model. Besides, we provide a concrete implementation and detailed performance results with a comparison of previous works in terms of the security model and the assumption, which demonstrates the advantage of our construction.
Metadata
- Available format(s)
-
PDF
- Category
- Public-key cryptography
- Publication info
- Published elsewhere. SAC 2024
- Keywords
- Lattice-based cryptographyIdentity-based encryptionNTRU latticeStandard model
- Contact author(s)
-
jiweidan @ sjtu edu cn
wzdstill @ sjtu edu cn
iniesta8 @ sjtu edu cn
wangamyqi @ gmail com
wanggxx @ sjtu edu cn
dwgu @ sjtu edu cn - History
- 2024-08-20: approved
- 2024-08-19: received
- See all versions
- Short URL
- https://ia.cr/2024/1295
- License
-
CC BY
BibTeX
@misc{cryptoeprint:2024/1295,
author = {Weidan Ji and Zhedong Wang and Haoxiang Jin and Qi Wang and Geng Wang and Dawu Gu},
title = {Identity-Based Encryption from Lattices with More Compactness in the Standard Model},
howpublished = {Cryptology {ePrint} Archive, Paper 2024/1295},
year = {2024},
url = {https://eprint.iacr.org/2024/1295}
}
