Vmware, Inc.

Toly Kournik

Ittai Abraham

Igor Golikov

Guy Golan Gueta

Nikolay Kolev Georgiev

Tsvetomir Dimirov Dimitrov

Yehonatan Buchnik

Nikhil Kumar

The present disclosure is directed to a novel reconfiguration framework for a BFT SMR system. With this framework, the configuration of both the system itself and the clients of the system can be modified in a live manner (i.e., without taking the system offline) while preserving correct system operation.

Reconfiguration framework for byzantine fault tolerant (BFT) state machine replication (SMR) systems

In some embodiments, a method sends first messages that request first information for a set of blocks of the blockchain to the N replicas. Each replica maintains a respective instance of the blockchain. Second messages is received from at least a portion of the N replicas. The second messages include the first information for the set of blocks from each respective instance of the blockchain that is maintained by the N replicas. The method analyzes the first information to determine whether a consensus on the first information is reached by a number of replicas. When consensus is reached, a request is sent to a replica for one or more blocks to back up to a backup blockchain and second information is received for the one or more blocks from the replica. The method uses the second information to back up the one or more blocks in the backup blockchain.

Byzantine fault tolerance protocol for backing up blockchains

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Herzliya, Israel

Toly Kournik