Fischlin, Marc ; Haagh, Helene
Hrsg.: Schwabe, Peter ; Theriault, Nicolas (2019)
How to Sign with White-Boxed AES.
6th International Conference on Cryptology and Information Security in Latin America. Santiago de Chile, Chile (02.-04.10.2019)
doi: 10.1007/978-3-030-30530-7_13
Konferenzveröffentlichung, Bibliographie
Kurzbeschreibung (Abstract)
We investigate the possibility to use obfuscated implementations of the Advanced Encryption Standard AES (“white-boxed AES”) to devise secure signature schemes. We show that the intuitive idea to use AES-based message authentication codes to sign, and the white-boxed implementation to verify, fails in general. This underlines that providing a secure white-box implementation is only the first step and that using it securely as a component in cryptographic protocols may be harder than originally thought. We therefore provide secure signature schemes based on white-boxed AES and on random oracles, as well as stateful and stateless constructions without random oracles. All our solutions are shown to be secure for reasonable parameters.
| Typ des Eintrags: | Konferenzveröffentlichung |
|---|---|
| Erschienen: | 2019 |
| Herausgeber: | Schwabe, Peter ; Theriault, Nicolas |
| Autor(en): | Fischlin, Marc ; Haagh, Helene |
| Art des Eintrags: | Bibliographie |
| Titel: | How to Sign with White-Boxed AES |
| Sprache: | Englisch |
| Publikationsjahr: | Oktober 2019 |
| Verlag: | Springer |
| Buchtitel: | LATINCRYPT 2019: Progress in Cryptology - LATINCRYPT 2019 |
| Reihe: | Lecture Notes in Computer Science |
| Band einer Reihe: | 11774 |
| Veranstaltungstitel: | 6th International Conference on Cryptology and Information Security in Latin America |
| Veranstaltungsort: | Santiago de Chile, Chile |
| Veranstaltungsdatum: | 02.-04.10.2019 |
| DOI: | 10.1007/978-3-030-30530-7_13 |
| Kurzbeschreibung (Abstract): | We investigate the possibility to use obfuscated implementations of the Advanced Encryption Standard AES (“white-boxed AES”) to devise secure signature schemes. We show that the intuitive idea to use AES-based message authentication codes to sign, and the white-boxed implementation to verify, fails in general. This underlines that providing a secure white-box implementation is only the first step and that using it securely as a component in cryptographic protocols may be harder than originally thought. We therefore provide secure signature schemes based on white-boxed AES and on random oracles, as well as stateful and stateless constructions without random oracles. All our solutions are shown to be secure for reasonable parameters. |
| Freie Schlagworte: | Primitives, P2 |
| Fachbereich(e)/-gebiet(e): | 20 Fachbereich Informatik 20 Fachbereich Informatik > Kryptographie und Komplexitätstheorie DFG-Sonderforschungsbereiche (inkl. Transregio) DFG-Sonderforschungsbereiche (inkl. Transregio) > Sonderforschungsbereiche DFG-Graduiertenkollegs DFG-Graduiertenkollegs > Graduiertenkolleg 2050 Privacy and Trust for Mobile Users Profilbereiche Profilbereiche > Cybersicherheit (CYSEC) Forschungsfelder Forschungsfelder > Information and Intelligence Forschungsfelder > Information and Intelligence > Cybersecurity & Privacy DFG-Sonderforschungsbereiche (inkl. Transregio) > Sonderforschungsbereiche > SFB 1119: CROSSING – Kryptographiebasierte Sicherheitslösungen als Grundlage für Vertrauen in heutigen und zukünftigen IT-Systemen |
| Hinterlegungsdatum: | 11 Jul 2019 15:27 |
| Letzte Änderung: | 11 Apr 2024 11:20 |
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