Secure Resharding

Next Milestone Date

May 31, 2023

Assign

Rongjian Lan

Status

Objective Defined

Github

Collaborator

Grant-1

Grant-2

Grant-3

Release Date

2023 Q1

Resharding: randomized validator assignment to prevent single-shard attacks

We are re-assigning shard membership of validators every epoch to enhance our network security. Our innovations include using verifiable delay function (VDF) for randomized assignment, integrating staking and slashing with resharding, and forcing regular leader rotations. Harmony will be among the first blockchains to launch resharding.

Cryptology ePrint Archive: Report 2018/460 - RapidChain: Scaling Blockchain via Full Sharding

RapidChain: Scaling Blockchain via Full Sharding Mahdi Zamani and Mahnush Movahedi and Mariana Raykova Abstract: A major approach to overcoming the performance and scalability limitations of current blockchain protocols is to use sharding, which is to split the overheads of processing transactions among multiple, smaller groups of nodes.

eprint.iacr.org