Campos, Fabio ; Muth, Philipp (2022)
On Actively Secure Fine-Grained Access Structures from Isogeny Assumptions.
13th International Conference on Post-Quantum Cryptography. virtual Conference (28.-30.09.2022)
doi: 10.1007/978-3-031-17234-2_18
Konferenzveröffentlichung, Bibliographie
Kurzbeschreibung (Abstract)
We present an actively secure threshold scheme in the setting of Hard Homogeneous Spaces (HHS) which allows fine-grained access structures. More precisely, we elevate a passively secure isogeny-based threshold scheme to an actively secure setting. We prove the active security and simulatability of our advanced schemes. By characterising the necessary properties, we open our schemes to a significantly wider field of applicable secret sharing schemes. Furthermore, we show that Shamir’s scheme has our generalised properties, and thereby our approach truly represents a less restrictive generalisation.
| Typ des Eintrags: | Konferenzveröffentlichung |
|---|---|
| Erschienen: | 2022 |
| Autor(en): | Campos, Fabio ; Muth, Philipp |
| Art des Eintrags: | Bibliographie |
| Titel: | On Actively Secure Fine-Grained Access Structures from Isogeny Assumptions |
| Sprache: | Englisch |
| Publikationsjahr: | 21 September 2022 |
| Verlag: | Springer |
| Buchtitel: | Post-Quantum Cryptography |
| Reihe: | Lecture Notes in Computer Science |
| Band einer Reihe: | 13512 |
| Veranstaltungstitel: | 13th International Conference on Post-Quantum Cryptography |
| Veranstaltungsort: | virtual Conference |
| Veranstaltungsdatum: | 28.-30.09.2022 |
| DOI: | 10.1007/978-3-031-17234-2_18 |
| URL / URN: | https://link.springer.com/chapter/10.1007/978-3-031-17234-2_... |
| Zugehörige Links: | |
| Kurzbeschreibung (Abstract): | We present an actively secure threshold scheme in the setting of Hard Homogeneous Spaces (HHS) which allows fine-grained access structures. More precisely, we elevate a passively secure isogeny-based threshold scheme to an actively secure setting. We prove the active security and simulatability of our advanced schemes. By characterising the necessary properties, we open our schemes to a significantly wider field of applicable secret sharing schemes. Furthermore, we show that Shamir’s scheme has our generalised properties, and thereby our approach truly represents a less restrictive generalisation. |
| Freie Schlagworte: | Solutions, S6 |
| Fachbereich(e)/-gebiet(e): | 20 Fachbereich Informatik 20 Fachbereich Informatik > Security Engineering DFG-Sonderforschungsbereiche (inkl. Transregio) DFG-Sonderforschungsbereiche (inkl. Transregio) > Sonderforschungsbereiche DFG-Sonderforschungsbereiche (inkl. Transregio) > Sonderforschungsbereiche > SFB 1119: CROSSING – Kryptographiebasierte Sicherheitslösungen als Grundlage für Vertrauen in heutigen und zukünftigen IT-Systemen |
| Hinterlegungsdatum: | 21 Mär 2023 09:37 |
| Letzte Änderung: | 17 Jul 2023 13:50 |
| PPN: | 509756719 |
| Zugehörige Links: | |
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