In this work, we propose a novel sidechain structure via an optimized two-way peg protocol for device authentication in the smart community in order to overcome the limitations of existing approaches. The proposed scheme uses private side blockchains to distribute and manage the local registration and authentication processes, in addition to a local mainchain block to circulate the information record with other smart systems. More importantly, we propose the optimized two-way peg protocol in the proposed sidechain system in order to prevent the worthless information injection attack during the authentication information sharing procedure between the main chain and side blockchains. The optimized two-way peg protocol supervises the availability of the required information by dynamically evaluating the trustworthiness of each smart device. The evaluation is based on numerous criteria, such as the authentication method, previous authentication information sharing history, and local authentication results. Consequently, the simulation results prove the superiority of the proposed scheme in terms of reducing authentication time, improving information management efficiency and decreasing storage consumption as compared to existing works, and the applicability and feasibility of the optimized two-way peg protocol have been approved. It is noteworthy that the proposed sidechain-based method shows its superiority in reducing the cost of authentication time compared with the blockchain-based method when using blockchain structure. The reflected savings are 33.33%, 34.29%, and 36.36% when in comparison to the conventional authentication process without applying any additional method, the authentication process using the proposed sidechain based method, and the authentication process using the blockchain based method, respectively.

中文翻译：

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基于侧链的智能社区优化双向挂钩协议去中心化认证方案


在这项工作中，我们通过优化的双向挂钩协议提出了一种新颖的侧链结构，用于智能社区中的设备身份验证，以克服现有方法的局限性。所提出的方案使用私有侧区块链来分发和管理本地注册和身份验证过程，此外还使用本地主链块与其他智能系统循环信息记录。更重要的是，我们在所提出的侧链系统中提出了优化的双向挂钩协议，以防止主链和侧链之间的身份验证信息共享过程中出现无价值的信息注入攻击。优化的双向挂钩协议通过动态评估每个智能设备的可信度来监督所需信息的可用性。评估基于多种标准，例如身份验证方法、先前的身份验证信息共享历史记录以及本地身份验证结果。因此，仿真结果证明了该方案与现有方案相比在减少认证时间、提高信息管理效率和降低存储消耗方面的优越性，并且验证了优化的双向挂钩协议的适用性和可行性。值得注意的是，在使用区块链结构时，与基于区块链的方法相比，所提出的基于侧链的方法在减少认证时间成本方面表现出优越性。反映的节省分别为 33.33%、34.29% 和 36。与不应用任何附加方法的传统认证过程、使用所提出的基于侧链的方法的认证过程以及使用基于区块链的方法的认证过程相比，分别提高了 36%。