Proposal for an Anonymous Admission Control Scheme for Pre-Registrants Using Ring Signatures

A ring signature is a highly anonymous signature scheme that generates a signature using multiple public keys, including that of the signer, while concealing the identity of the actual signer. In this study, we propose an anonymous admission control scheme using ring signatures in physical-world scenarios. To reduce the signature size, we employed ECDSA based on the traditional AOS ring signature scheme. We implemented the application using OpenSSL/C++ and Unity/C#, and verified its functionality.