A Novel Multiserver Authentication Scheme Using Proxy Resignature With Scalability and Strong User Anonymity

As the indispensable part of the security demand in a distributed system, a variety of online services need to be protected from unauthorized access. Multiserver authentication (MA) is one of the most effective and promising approaches to guarantee one party the authenticity of its partner in the distributed system. In this article, we first elaborate the problem of scalability for MA protocol. After that, a two-level framework for multiserver environment is proposed to convert single-server authentication to MA with provable security and perfect scalability. Also, we give an instance of our novel infrastructure by adopting the idea of proxy resignature to achieve strong anonymity. Furthermore, the security analysis and performance evaluation show that our protocol is secure and practical.