Paper 2026/2346 Original: eprint.iacr.org/2026/2346 ↗
Public-coin Differing-input Obfuscation from KOALA and iO
Abstract
We show that the recent construction of witness encryption (Hair and Sahai, arXiv:2609.18275v1) is a public-coin extractable witness encryption scheme under the Knowledge of Orthogonality Assumption, or KOALA for short (Buellens-Wee, PKC 2019). As an immediate application, we obtain public-coin differing-input obfuscation (diO) from KOALA and indistinguishability obfuscation (iO).
Metadata
- Available format(s)
PDF- Category
- Foundations
- Publication info
- Preprint.
- History
- 2026-10-05: last updated
- 2026-10-05: published
- Short URL
- https://ia.cr/2026/2346
- License
- https://creativecommons.org/licenses/by-nc-sa/4.0/
BibTeX
@misc{cryptoeprint:2026/2346,
author = {Liyan Chen and Vinod Vaikuntanathan},
title = {Public-coin Differing-input Obfuscation from KOALA and iO},
howpublished = {Cryptology {ePrint} Archive, Paper 2026/2346},
year = {2026},
url = {https://eprint.iacr.org/2026/2346}
}