城堡：黄昏网络上的自我主权身份
Citadel: Self-Sovereign Identities on Dusk Network
摘要：
服务提供商处理的关于其用户的敏感信息的数量在许多用例中已成为一个令人担忧的事实，在这些用例中，用户别无选择，只能相信这些公司不会滥用他们的个人信息。为了解决这个问题，自主身份（SSI）系统已经成为近年来的研究热点：SSI系统允许用户透明地管理他们的身份。最近的解决方案代表了用户将服务作为存储在区块链上的不可替代令牌（NFT）使用的权利，并且用户使用零知识证明（ZKP）来证明拥有这些权利。然而，即使ZKP没有泄露任何关于权限的信息，NFT也被存储为链接到已知帐户的公共值，因此可以跟踪它们。在本文中，我们为Dusk Network Blockchain设计了一个原生的隐私保护NFT模型，并在此基础上部署了Citadel：我们新颖的完全隐私保护SSI系统，其中用户的权利被私人存储在Dusk Network Blockchain上，用户可以以完全私有的方式证明他们的所有权。
英文摘要：
The amount of sensitive information that service providers handle about their users has become a concerning fact in many use cases, where users have no other option but to trust that those companies will not misuse their personal information. To solve that, Self-Sovereign Identity (SSI) systems have become a hot topic of research in recent years: SSI systems allow users to manage their identities transparently. Recent solutions represent the rights of users to use services as Non-Fungible Tokens (NFTs) stored on Blockchains, and users prove possession of these rights using Zero-Knowledge Proofs (ZKPs). However, even when ZKPs do not leak any information about the rights, the NFTs are stored as public values linked to known accounts, and thus, they can be traced. In this paper, we design a native privacy-preserving NFT model for the Dusk Network Blockchain, and on top of it, we deploy Citadel: our novel full-privacy-preserving SSI system, where the rights of the users are privately stored on the Dusk Network Blockchain, and users can prove their ownership in a fully private manner.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
