Paper 2021/192
Quantum Indifferentiability of SHA-3
Jan Czajkowski
Abstract
In this paper we prove quantum indifferentiability of the sponge construction instantiated with random (invertible) permutations. With this result we bring the post-quantum security of the standardized SHA-3 hash function to the level matching its security against classical adversaries. To achieve our result, we generalize the compressed-oracle technique of Zhandry (Crypto'19) by defining and proving correctness of a compressed permutation oracle. We believe our technique will find applications in many more cryptographic constructions.
Metadata
- Available format(s)
-
PDF
- Category
- Foundations
- Publication info
- Preprint. MINOR revision.
- Keywords
- quantum indifferentiabilitysponge constructionSHA3permutations
- Contact author(s)
- j czajkowski @ uva nl
- History
- 2021-05-12: revised
- 2021-02-24: received
- See all versions
- Short URL
- https://ia.cr/2021/192
- License
-
CC BY
BibTeX
@misc{cryptoeprint:2021/192, author = {Jan Czajkowski}, title = {Quantum Indifferentiability of SHA-3}, howpublished = {Cryptology ePrint Archive, Paper 2021/192}, year = {2021}, note = {\url{https://eprint.iacr.org/2021/192}}, url = {https://eprint.iacr.org/2021/192} }