Linkable and traceable anonymous authentication with fine-grained access control

Anonymous authentication plays a crucial role in privacy-focused applications, and it is used for authenticating a user's identity in a privacy-preserving way. If enough privacy is provided, malicious users may misuse privacy. Accountability is necessary to avoid abusing anonymity. Previous anonymous authentication schemes can not hold the basic requirements of public linking and tracing while further ensuring access control simultaneously.

abusing access access control accountability anonymity anonymous applications authentication basic can computer sciences control identity malicious may privacy public requirements role traceable