【Author】
Kaur, Manpreet; Gupta, Shikha; Kumar, Deepak; Verma, Chaman; Neagu, Bogdan-Constantin; Raboaca, Maria Simona
【Abstract】As the backbone of every blockchain application, the consensus protocol is impacted by numerous risks, namely resource requirements and energy consumption, which limit the usage of blockchain. Applications such as IoT/IIoT cannot use these high-cost consensus methods due to limited resources. Therefore, we introduce Delegated Proof of Accessibility (DPoAC), a new consensus technique that employs secret sharing, PoS with random selection, and an interplanetary file system (IPFS).DPoAC is decomposed into two stages. During the initial stage, a secret is generated by a randomly chosen super node and divided into n shares. These shares are encrypted and stored in different n nodes on the IPFS network. The nodes will compete to access these shareholders to reconstruct the secret. The winning node will be awarded block generation rights. PoS with random selection is used in the second stage to compute the appropriate hash value and construct a block with valid transactions. In this novel approach, a node with few computational resources and small stakes can still obtain block generation rights by providing access to secret shares and reconstructing the secret, making the system reasonably fair. We qualitatively analyze and compare our scheme based on performance parameters against existing mainstream consensus protocols in the context of IoT/IIoT networks.
【Keywords】blockchain; consensus; DPoAC; secret sharing; IPFS; IoT; IIoT
【标题】可访问性委托证明（DPoAC）：区块链系统的新型共识协议
【摘要】作为每个区块链应用的骨干，共识协议受到众多风险的影响，即资源需求和能源消耗，从而限制了区块链的使用。由于资源有限，IoT/IIoT 等应用程序无法使用这些高成本的共识方法。因此，我们介绍了可访问性委托证明 (DPoAC)，这是一种采用秘密共享、随机选择的 PoS 和行星际文件系统 (IPFS) 的新共识技术。DPoAC 被分解为两个阶段。在初始阶段，一个秘密由一个随机选择的超级节点生成并分成n份。这些共享被加密并存储在 IPFS 网络上的不同 n 个节点中。节点将竞争访问这些股东以重建秘密。获胜节点将获得区块生成权。在第二阶段使用带有随机选择的 PoS 来计算适当的哈希值并构造一个包含有效交易的区块。在这种新颖的方法中，具有少量计算资源和少量权益的节点仍然可以通过提供对秘密份额的访问和重建秘密来获得块生成权，从而使系统合理公平。我们在 IoT/IIoT 网络的背景下，基于性能参数对我们的方案与现有的主流共识协议进行定性分析和比较。
【关键词】区块链；共识; DPoAC；秘密分享； IPFS；物联网；物联网
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