Association for Computing Machinery
Trust and anonymity are both desirable properties on the internet. However, online services and users often have to make the trade-off between trust and anonymity due to the lack of usable frameworks for achieving them both. The authors propose Opaak, a practical anonymous authentication framework. Opaak enables its users to establish identities with different online services while ensuring that these identities cannot be linked with each other or their real identity. In addition, Opaak allows online service providers to control the rate at which users utilize their services while preserving their anonymity.