论文标题
可信赖的边缘通过区块链计算
Trustworthy Edge Computing through Blockchains
论文作者
论文摘要
边缘计算引起了许多最近的研究兴趣，因为通过从远程数据中心到附近的边缘节点卸载了许多工作负载，因此绩效提高。尽管如此，这种新兴范式的一个开放挑战在于边缘节点和最终设备（例如传感器和控制器）上的潜在安全问题。本文提出了一个合作协议，即院长，跨越边缘节点，以防止数据操纵，并允许在有限的存储，计算和网络容量的资源约束下快速恢复的公平数据共享。具体而言，Dean利用配备了三个独立核心组件的并行机制，有效地实现了低资源消耗，同时允许在边缘节点上进行安全的并行块处理。我们已经基于Dean实施了系统原型，并通过与三个流行的区块链实现进行了比较，通过实验验证了其有效性：以太坊，平价和Hyperledger织物。实验结果表明，系统原型对任意失败具有很高的韧性：在大多数情况下，可信节点的百分比远高于所需的50 \％。从性能方面，总部位于迪恩的区块链实施优于最先进的区块链系统，最高$ 25 \ tims $ $ $ $ $ $ $ $ $ 18 \ times $降低1,000个节点的潜伏期。
Edge computing draws a lot of recent research interests because of the performance improvement by offloading many workloads from the remote data center to nearby edge nodes. Nonetheless, one open challenge of this emerging paradigm lies in the potential security issues on edge nodes and end devices, e.g., sensors and controllers. This paper proposes a cooperative protocol, namely DEAN, across edge nodes to prevent data manipulation, and to allow fair data sharing with quick recovery under resource constraints of limited storage, computing, and network capacity. Specifically, DEAN leverages a parallel mechanism equipped with three independent core components, effectively achieving low resource consumption while allowing secured parallel block processing on edge nodes. We have implemented a system prototype based on DEAN and experimentally verified its effectiveness with a comparison with three popular blockchain implementations: Ethereum, Parity, and Hyperledger Fabric. Experimental results show that the system prototype exhibits high resilience to arbitrary failures: the percentile of trusty nodes is much higher than the required 50\% in most cases. Performance-wise, DEAN-based blockchain implementation outperforms the state-of-the-art blockchain systems with up to $25\times$ higher throughput and $18\times$ lower latency on 1,000 nodes.
