论文标题
基于区块链的分散应用程序的非限制凭证链接
Non-Disclosing Credential On-chaining for Blockchain-based Decentralized Applications
论文作者
论文摘要
许多服务系统依赖于用户的可验证身份相关信息。但是，必须同时避免并避免操纵与隐私信息的操纵和不必要的暴露。基于智能合约的执行模型和可验证的离心链计算利用零知识证明的基于智能合同的执行模型和可验证的离职模型有望为下一代，非删除凭证管理解决方案提供基础。在本文中，我们提出了一个新颖的凭证式链接系统，该系统可确保基于区块链的透明度，同时保持假名。我们提出了一个符合W3C可验证凭证建议的通用模型，并演示如何将其应用于需要计算身份相关属性验证的现有问题。我们的基于ZKSNARKS的参考实施和评估表明，与基于CL-Signatures相关的方法相比，我们的方法提供了显着的性能优势和更灵活的证明机制，这是我们对日益分散，透明，透明和值得信赖的服务系统的愿景的基础。
Many service systems rely on verifiable identity-related information of their users. Manipulation and unwanted exposure of this privacy-relevant information, however, must at the same time be prevented and avoided. Peer-to-peer blockchain-based decentralization with a smart contract-based execution model and verifiable off-chain computations leveraging zero-knowledge proofs promise to provide the basis for next-generation, non-disclosing credential management solutions. In this paper, we propose a novel credential on-chaining system that ensures blockchain-based transparency while preserving pseudonymity. We present a general model compliant to the W3C verifiable credential recommendation and demonstrate how it can be applied to solve existing problems that require computational identity-related attribute verification. Our zkSNARKs-based reference implementation and evaluation show that, compared to related approaches based on, e.g., CL-signatures, our approach provides significant performance advantages and more flexible proof mechanisms, underpinning our vision of increasingly decentralized, transparent, and trustworthy service systems.
