A Lightweight Decentralized Authentication Protocol with Anonymity and Traceability for Web3.0 Applications

With the development of Web 3.0, the application of distributed authentication systems has become increasingly widespread in sectors such as e-government and healthcare. However, existing decentralized solutions either suffer from single points of failure and trust assumptions or demonstrate inefficient batch verification, making it difficult to meet practical demands. This paper proposes a Decentralized Anonymous Traceable Authentication scheme DATA with batch verification through random masking. It also implements credential revocation verification using a double-layer mixed accumulator. The scheme supports users in selectively disclosing their attributes and achieving auditability without leaking sensitive information. We prove the scheme’s security under standard analysis and experimentally evaluate its operating performance. The results exhibit superior performance in batch verification, effectively improving the practicality of distributed identity authentication systems.