论文标题
确保再生代码以降低碎片链中的存储和自举成本
Secure Regenerating Codes for Reducing Storage and Bootstrap Costs in Sharded Blockchains
论文作者
论文摘要
区块链是具有广泛应用的分布式分类帐。由于对区块链的存储需求增加，因此仅几个矿工可以提供计算。已经提出了碎片来扩展区块链，以使区块链的存储和交易效率以安全保证成本提高。本文旨在考虑一种新协议，即Secure-Repair-blockchain（SRB），该协议旨在降低矿工的存储成本。此外，SRB还降低了引导成本，这使新矿工可以轻松连接碎片区块链。为了减少存储，SRB中使用了编码理论技术。为了减少传输到新节点连接碎片的数据量，使用精确维修安全再生代码的概念。所提出的区块链协议比不使用编码的区块链的存储空间要低，并且与不同的基线相比，引导成本较低。
Blockchain is a distributed ledger with wide applications. Due to the increasing storage requirement for blockchains, the computation can be afforded by only a few miners. Sharding has been proposed to scale blockchains so that storage and transaction efficiency of the blockchain improves at the cost of security guarantee. This paper aims to consider a new protocol, Secure-Repair-Blockchain (SRB), which aims to decrease the storage cost at the miners. In addition, SRB also decreases the bootstrapping cost, which allows for new miners to easily join a sharded blockchain. In order to reduce storage, coding-theoretic techniques are used in SRB. In order to decrease the amount of data that is transferred to the new node joining a shard, the concept of exact repair secure regenerating codes is used. The proposed blockchain protocol achieves lower storage than those that do not use coding, and achieves lower bootstrapping cost as compared to the different baselines.
