[Resource Topic] 2025/960: A Framework for Advanced Signature Notions

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Title:
A Framework for Advanced Signature Notions

Authors: Patrick Struck, Maximiliane Weishäupl

Abstract:

The beyond unforgeability features formalize additional security properties for signature schemes. We develop a general framework of binding properties for signature schemes that encompasses existing beyond unforgeability features and reveals new notions. Furthermore, we give new results regarding various transforms: We show that the transform by Cremers et al. (SP’21) achieves all of our security notions and provide requirements such that this is also the case for the transform by Pornin and Stern (ACNS’05). Finally, we connect our framework to unforgeability notions.

ePrint: https://eprint.iacr.org/2025/960

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