Paper 2025/960 Original: eprint.iacr.org/2025/960 ↗
A Framework for Advanced Signature Notions
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; we give a modified definition of so-called weak keys, and show that the Pornin–Stern transform (ACNS’05) also achieves all notions if there are no weak keys. Finally, we connect our framework to unforgeability notions.
Metadata
- Available format(s)
PDF- Category
- Public-key cryptography
- Publication info
- Preprint.
- History
- 2026-02-27: last updated
- 2025-05-26: published
- Short URL
- https://ia.cr/2025/960
- License
- https://creativecommons.org/licenses/by/4.0/
BibTeX
@misc{cryptoeprint:2025/960,
author = {Patrick Struck and Maximiliane Weishäupl},
title = {A Framework for Advanced Signature Notions},
howpublished = {Cryptology {ePrint} Archive, Paper 2025/960},
year = {2025},
url = {https://eprint.iacr.org/2025/960}
}