Welcome to the resource topic for 2025/117
Title:
Post-Quantum Online/Offline Signatures
Authors: Martin R. Albrecht, Nicolas Gama, James Howe, Anand Kumar Narayanan
Abstract:Post-quantum signatures have high costs compared to RSA and ECDSA, in particular for smart cards. A line of work originating from Even, Goldreich, and Micali (CRYPTO’89) aimed to reduce digital signature latency by splitting up signing into an online and offline phase. The online/offline paradigm combines an ordinary long-term signature scheme with a fast, generally one-time, signature scheme. We reconsider this paradigm in the context of lattice-based post-quantum signatures in the GPV framework, with an example instantiation based on Falcon.
ePrint: https://eprint.iacr.org/2025/117
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