发表机构
Osaka Metropolitan University; Nara Institute of Science and Technology; Vulcan Research, AIFT; Keio University（大阪公立大学; 奈良先端科学技术大学院大学; Vulcan Research, AIFT; 庆应义塾大学）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
针对现有身份验证成本高、可扩展性差的问题，提出基于多方计算（MPC）的透明身份验证框架，采用多维位矩阵压缩凭证数据，结合二层锚定、可重用VP及后量子签名，实现低成本、防量子攻击且可扩展的验证。
AI 中文摘要
安全且保护隐私的身份验证过程对于数字生态系统至关重要。当前依赖零知识证明（ZKP）的eKYC框架面临高计算成本、电路设计僵化、集成复杂以及链上验证费用高昂等问题。W3C 2021年基于BitString的凭证状态机制在大规模部署中也存在更新效率低下和可扩展性差的问题。我们提出了一种基于多方计算（MPC）的透明且成本高效的身份验证框架。该框架支持私有链下代码执行，并生成锚定到区块链的运行时证明。框架引入了一种具有高效压缩功能的多维位矩阵模型。使用ZSTD，凭证数据被压缩至76字节，而GZIP为140字节，从而降低了存储和带宽成本。该系统还支持细粒度的状态更新和二层区块链锚定，以实现防篡改、低成本的验证。系统采用带有唯一访问令牌的可重用可验证演示（VP），实现零成本验证和更强的访问控制。选择性披露保留了用户控制权并增强了隐私性。最后，系统集成了SHA3哈希和Falcon后量子签名。这保证了抵御量子攻击的鲁棒性、透明性和可扩展性。实验发现和安全性研究验证了其鲁棒性和适用性，证明其是面向国家级身份验证的未来解决方案。
英文摘要
A secure and privacy-preserving identity verification process is essential for digital ecosys- tems. Current eKYC frameworks that rely on Zero-Knowledge Proofs (ZKPs) face high computational cost, rigid circuit design, complex integration, and expensive on-chain verification. The W3C 2021 BitString- based credential status mechanism also suffers from inefficient updates and poor scalability in large- scale deployments. We propose a transparent and cost-effective identity verification framework based on Multi-Party Computation (MPC). It enables private off-chain code execution and produces runtime proofs anchored to a blockchain. The framework introduces a multidimensional bit-matrix model with efficient compression. Using ZSTD, the credential data is reduced to 76 bytes compared to 140 bytes with GZIP, cutting storage and bandwidth costs. The system also supports fine-grained status updates and Layer-2 blockchain anchoring for tamper-evident, low-cost verification. The system employs reusable verifiable presentations (VPs) with unique access tokens, enabling cost-free verification and stronger access control. Selective disclosure preserves user control and strengthens privacy. Finally, the system integrates SHA3 hashing and Falcon post-quantum signatures. This guarantees robustness against quantum attacks, transparency, and scalability. It is a future-proof solution for national-scale identity verification, as demonstrated by experimental findings and security studies that validate its robustness and applicability.
CommentsWe will run more experiment and validate more to produce quality research work
