Withdrawable signatures in Fiat-Shamir with aborts constructions

This paper explores withdrawable signatures, a novel cryptographic mechanism that allows signers to revoke signatures efficiently without exposing private keys or affecting other valid signatures. This capability has significant implications for:

• Smart contracts – Enabling flexible commitments in multi-party agreements.
• Decentralized voting – Allowing voters to adjust their decisions before final tabulation.
• Escrow & multi-party transactions – Providing a secure way to manage disputes.

By leveraging Fiat-Shamir with aborts constructions, like Dilithium or HAETAE, this work presents a practical and secure approach to withdrawable signatures in the quantum-resistant framework, opening new possibilities for blockchain applications and beyond.

Read the full paper here.