An Supervisable Anonymous Authentication Scheme Based on Master-slave Certificate

The development of blockchain has put forward higher requirements for authentication technology. In order to solve the current blockchain authentication problem and enhance the supervision and anonymity, we propose an authentication scheme based on master-slave certificate and zero-knowledge proof. Users can hide their real identity information through the anonymity of the slave certificate. When necessary, regulators can track the malicious users through smart contracts. Through security analysis, it is verified that there is no linkability between the master and slave certificates of this scheme, which can efficiently achieve supervisable anonymous authentication. The simulation experiment results show that the scheme is stable and scalable. The results also show that, compared with the traditional authentication, this scheme reduces the computational overhead of certificate issuers and is suitable for adoption in blockchain systems.