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Paper 2022/139
Sponge-based Authenticated Encryption: Security against Quantum Attackers
Christian Janson and Patrick Struck
Abstract
In this work, we study the security of sponge-based authenticated encryption schemes against quantum attackers. In particular, we analyse the sponge-based authenticated encryption scheme SLAE as put forward by Degabriele et al. (ASIACRYPT'19). We show that the scheme achieves security in the post-quantum (QS1) setting in the quantum random oracle model by using the one-way to hiding lemma. Furthermore, we analyse the scheme in a fully-quantum (QS2) setting. There we provide a set of attacks showing that SLAE does not achieve ciphertext indistinguishability and hence overall does not provide the desired level of security.
Metadata
- Available format(s)
- Category
- Secret-key cryptography
- Publication info
- Preprint. MINOR revision.
- Contact author(s)
-
christian janson @ tu-darmstadt de
patrick struck @ ur de - History
- 2022-09-28: revised
- 2022-02-09: received
- See all versions
- Short URL
- https://ia.cr/2022/139
- License
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CC BY