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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)
- 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