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Paper 2021/396
LESS-FM: Fine-tuning Signatures from a Code-based Cryptographic Group Action
Alessandro Barenghi and Jean-Francois Biasse and Edoardo Persichetti and Paolo Santini
Abstract
Code-based cryptographic schemes are highly regarded among the quantum-safe alternatives to current standards. Yet, designing code-based signatures using traditional methods has always been a challenging task, and current proposals are still far from the target set by other post-quantum primitives (e.g. lattice-based). In this paper, we revisit a recent work using an innovative approach for signing, based on the hardness of the code equivalence problem. We introduce some optimizations and provide a security analysis for all variants considered. We then show that the new parameters produce instances of practical interest.
Metadata
- Available format(s)
- Category
- Public-key cryptography
- Publication info
- Preprint. MINOR revision.
- Keywords
- Code-basedPost-QuantumCode EquivalenceSignatures
- Contact author(s)
- epersichetti @ fau edu
- History
- 2021-08-12: last of 2 revisions
- 2021-03-27: received
- See all versions
- Short URL
- https://ia.cr/2021/396
- License
-
CC BY