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arXiv · 2607.05831

Withdrawability in Fiat-Shamir with aborts constructions

Ramses Fernandez-Valencia
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Abstract

This article presents an extension of the work performed by Liu, Baek and Susilo on withdrawable signatures to the Fiat-Shamir with aborts paradigm. We introduce an abstract construction, and provide security proofs for this proposal. As an instantiation, we provide a concrete withdrawable signature scheme based on a no-hint, full-t Dilithium-style Fiat-Shamir with aborts construction; adapting to production ML-DSA (with hints) introduces a small epsilon term.

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Ramses Fernandez-Valencia. 2026-07-07. Withdrawability in Fiat-Shamir with aborts constructions. https://arxiv.org/abs/2607.05831

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