用去中心化身份实现机器人间私密通信，不依赖第三方且效率更高。
RoboComm: A DID-based scalable and privacy-preserving Robot-to-Robot interaction over state channels
- 基于去中心化身份（DID）实现机器人互信认证，无需第三方
- 数据存于机器人硬件而非区块链，保障隐私与机密性
- 通过状态通道提升通信吞吐量，适合多机器人协同场景
在多机器人系统中，不同组织的机器人如何在互不信任的情况下建立信任并保护隐私是一大挑战。当前基于智能合约和区块链的方案受限于交易处理能力低、维护成本高，且公有或私有链上的交易均公开可读，无法保护机器人数据与隐私。本文提出RoboComm，一种基于去中心化身份（DID）的机器人间隐私保护交互机制。通过DID，机器人可独立完成身份认证，无需依赖第三方服务。可信凭证使机器人相关私密数据可存储于其硬件内，区别于传统链上存储方式。通过状态通道实现消息高效交换，显著提升吞吐量。作为区块链支持的系统，RoboComm具备可信性且不依赖单一中心实体。我们实现了该方案原型，验证了其可行性。
原文摘要 · Abstract (English)
In a multi robot system establishing trust amongst untrusted robots from different organisations while preserving a robot's privacy is a challenge. Recently decentralized technologies such as smart contract and blockchain are being explored for applications in robotics. However, the limited transaction processing and high maintenance cost hinder the widespread adoption of such approaches. Moreover, blockchain transactions be they on public or private permissioned blockchain are publically readable which further fails to preserve the confidentiality of the robot's data and privacy of the robot. In this work, we propose RoboComm a Decentralized Identity based approach for privacy-preserving interaction between robots. With DID a component of Self-Sovereign Identity; robots can authenticate each other independently without relying on any third-party service. Verifiable Credentials enable private data associated with a robot to be stored within the robot's hardware, unlike existing blockchain based approaches where the data has to be on the blockchain. We improve throughput by allowing message exchange over state channels. Being a blockchain backed solution RoboComm provides a trustworthy system without relying on a single party. Moreover, we implement our proposed approach to demonstrate the feasibility of our solution.
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