An Anonymous Cross-Domain Authentication Scheme Based on Blockchain Smart Contracts

To address the issues of excessive centralization and difficulties in cross-domain identity authentication in traditional cross-domain authentication schemes, an anonymous cross-domain authentication framework based on blockchain smart contracts is proposed. The framework uses Pedersen commitments to construct non-interactive zero-knowledge proofs, enabling users to achieve anonymous identity authentication with low communication overhead. Blockchain smart contracts are employed to record information about users and domains, realizing decentralized information storage. Experimental results show that the proposed scheme effectively reduces the level of centralization in cross-domain authentication and improves both the efficiency and security of cross-domain identity authentication.