Unterzeichnung Zweier Parteien mit Gitterbasierter Verschlüsselung
Anmelder: Cybernetica AS 🇪🇪
Details
- Veröffentlichungs-Nr.
- EP4783516
- Anmeldetag
- 22. Januar 2026
- Veröffentlichung
- 29. Juli 2026
- Rechtsraum
- EP
- IPC
- H04L9/30, H04L9/32
Abstract
A computer-implemented method for two-party computation of a digital signature of a message using a lattice-based digital signature scheme, wherein the lattice-based digital signature scheme uses a public key and a private key comprising a first private key share and a second private key share. The method comprises, at a first party 110, receiving the message for signing and retrieving the first private key share held by the first party. The method comprises, at a first party, computing 216 a first party share of the digital signature based on the message, the first private key share and secret-shared data, wherein secret-sharing is performed with a second party which holds the second private key share. The method comprises, at a first party, receiving a second party share of the digital signature from the second party; and forming 218 the digital signature by combining the first party share of the digital signature and the second party share of the digital signature.
Anmelder
- Firma
- Cybernetica AS
- Land
- 🇪🇪 Estland
Fachgebiete
Kilburn & Strode wurde 1906 in London gegründet und war die erste europäische Patent- und Markenkanzlei, deren Anwälte in Kalifornien als Foreign Legal Consultants zugelassen wurden. Präsenzen bestehen zudem in den Niederlanden, München sowie San Francisco und Boston.