作者：Oliver Berthold, Hannes Federrath, Stefan Köpsell
摘要：We present the architecture, design issues and functions of a MIX-based system for anonymous and unobservable real-time Internet access. This system prevents traffic analysis as well as flooding attacks. The core technologies include an adaptive, anonymous, time/volume-sliced channel mechanism and a ticket-based authentication mechanism. The system also provides an interface to inform anonymous users about their level of anonymity and unobservability.