- Patent Title: Scalable byzantine fault-tolerant protocol with partial tee support
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Application No.: US15950185Application Date: 2018-04-11
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Publication No.: US10887090B2Publication Date: 2021-01-05
- Inventor: Wenting Li , Ghassan Karame
- Applicant: NEC Laboratories Europe GmbH
- Applicant Address: DE Heidelberg
- Assignee: NEC Laboratories Europe GmbH
- Current Assignee: NEC Laboratories Europe GmbH
- Current Assignee Address: DE Heidelberg
- Agency: Leydig, Voit & Mayer, Ltd.
- Main IPC: H04L9/08
- IPC: H04L9/08 ; G06F11/20 ; H04L9/12 ; H04L9/32

Abstract:
A method for establishing consensus between a plurality of distributed nodes connected via a data communication network includes preparing a set of random numbers, wherein each of the random numbers is a share of an initial secret, wherein each share of the initial secret corresponds to one of a plurality of active nodes; encrypting, in order to generate encrypted shares of the initial secret, each respective share of the initial secret with a shared key corresponding to respective one of the plurality of active nodes to which the respective share corresponds; applying a bitwise xor function to the set of random numbers to provide the initial secret; and binding the initial secret to a last counter value to provide a commitment and a signature for the last counter. The method includes generating shares of a second and of a plurality of subsequent additional secrets by iteratively applying a hash function.
Public/Granted literature
- US20190097790A1 SCALABLE BYZANTINE FAULT-TOLERANT PROTOCOL WITH PARTIAL TEE SUPPORT Public/Granted day:2019-03-28
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