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InfoResearchPeer-reviewed
Weighted Threshold Anonymous Credentials With Redactable Fine-Grained Blind Signature for Auditable Lending System in Blockchains
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- Record updated
Summary
The paper proposes WTAC, weighted threshold anonymous credentials with redactable fine-grained blind signatures, for decentralized blockchain systems. It combines unlinkable redactable signatures, functional encryption, and weighted ramp secret-sharing so that issuers stay hidden from users and verifiers. The authors demonstrate the scheme in a privacy-preserving auditable lending system, give formal security proofs, and report performance evaluation showing practicality and efficiency.