Wiederverteilung von Geheimnissen über Sichere Kanäle für Jeden Schwellwert
EP4800969
2. September 2026
Anmelder: Institut Mines Telecom 🇫🇷
Details
- Veröffentlichungs-Nr.
- EP4800969
- Anmeldetag
- 28. Februar 2025
- Veröffentlichung
- 2. September 2026
- Rechtsraum
- EP
- IPC
- H04L9/08
Abstract
The invention concerns a proactive secret resharing method for resharing a least one secret between an old committee, comprising old participants and a new committee P'<sub>[n']</sub> comprising n' new participants P'<sub>j</sub>, j ranging from 1 to n', each old participant at the beginning of a round:- generates sub-shares of the ith-share;- generates sub-shares of the ith-share of randomness;- computes a vector of sub-shares by using a linearly homomorphic commitment scheme taking as input the ith-share and the ith-share of randomness;- send to each new participant P'<sub>j</sub> a quadruple ( SI−1→n@i;Si→n′;si→j;sι→j^).
Anmelder
- Firma
- Institut Mines Telecom
- Land
- 🇫🇷 Frankreich