发表机构
University of Bucharest（布加勒斯特大学）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
该研究针对无可信第三方时去中心化竞价的资格验证难题，提出基于自主权身份（SSI）的框架，结合可验证凭证与零知识证明，实现私有且去中心化的竞价。
AI 中文摘要
私有竞价是参与者提交密封竞价的过程，在竞价期间其内容对其他竞价者保持隐藏，这在竞争环境中对确保所有提案的公平、独立评估至关重要。虽然（公共）区块链支持去中心化竞价，且其透明度具备公共可验证性等优势，但若无可信第三方（TTP），现有方法难以验证竞价者是否具备资格。我们提出一种利用自主权身份（SSI）的框架，借助已确立的SSI框架验证竞价的资格与真实性，以解决上述问题。为让参与者在满足要求的同时保持竞价秘密，我们的模型使用可验证凭证（VCs）及零知识证明（ZKPs）等密码原语。
英文摘要
Private bidding is a process in which participants submit sealed bids, ensuring that their content remains hidden from other bidders during the bidding window. This is essential in competitive environments to ensure a fair and independent evaluation of all proposals. While (public) blockchain enables decentralized bidding and its transparency offers advantages such as public verifiability, without a Trusted Third Party (TTP), current methods struggle to verify whether a bidder is eligible. We propose a framework that leverages Self-Sovereign Identity (SSI) to address these issues by certifying the bid's eligibility and authenticity using the now-established SSI framework. To allow participants to prove they meet the requirements while keeping their bids secret, our model uses Verifiable Credentials (VCs) and cryptographic primitives such as Zero-Knowledge Proofs (ZKPs).
