Patent · US Active

Method and system for byzantine fault-tolerance replicating of data

US10797877B2 · kind B2 · utility

1Cited by

1References

15Claims

0Family size

Assignee

NEC CORPORATION · JP

Inventors

Ghassan Karame · Heidelberg, DE
Wenting Li · Longbeilingcun, CN
Jian Liu · Nanhu, CN
Nadarajah Asokan · Espoo, FI

Key dates

Filing date	Nov 25, 2016
Grant date	Oct 6, 2020
Priority date	—
Expiry date	May 1, 2037

Classification

Technology area (CPC G)Physics
CPC primaryG06F2201/82
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

A method for byzantine fault-tolerance replicating of data on a plurality of n servers includes performing a preprocessing procedure. The n servers include one primary node (PN) and n−1 backup nodes (BN), wherein f servers may arbitrarily fail, and wherein all n servers have a trusted computing entity (TCE). The preprocessing procedure is performed by the TCE of the PN and includes computing a random secret value for a unique, monotonic, sequential counter (UMSC) to be assigned with a request message for requesting an operation to be performed, computing a commitment for the random secret value and the UMSC, and splitting the random secret value into a plurality of shares. The preprocessing procedure further includes computing a server-specific authenticated encryption of each share, and providing the computed server-specific shares and the computed commitment to the respective servers.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.