Anix: Anonymous Blackout-Resistant Microblogging with Message Endorsing
发表信息
作者
- Sina Kamali
- Diogo Barradas
笔记
Repressive governments are increasingly resorting to Internet shutdowns to control the flow of information during political unrest. In response, messaging apps built on top of mobile-based mesh networks have emerged as important communication tools for citizens and activists. While different flavors of these apps exist, those featuring microblogging functionalities are attractive for swiftly informing and mobilizing individuals. However, most apps fail to simultaneously uphold user anonymity while providing safe ways for users to build trust in others and the messages flowing through the mesh. We introduce Anix, a blackout-resistant app with two novel features: remote trust establishment and anonymous message endorsing. Anix also leverages a set of identity revocation primitives for the fine-grained management of trust relationships and to provide enhanced anonymity. Our evaluation of Anix through comprehensive micro-benchmarks and simulations showcases its practicality and resilience in shutdown scenarios.
在政治动荡时期，专制政府越来越多地采取断网手段来控制信息流动。对此，基于移动网状网络构建的通讯应用已成为民众和活动人士的重要沟通工具。尽管这类应用形态各异，但具备微博功能的版本因其能快速传播信息、动员人群而颇具吸引力。然而，大多数应用无法在保障用户匿名性的同时，提供安全途径让用户建立对他人及网状网络中流通信息的信任。我们推出抗断网应用Anix，其具备两项创新功能：远程信任建立和匿名消息背书。该应用还采用了一套身份撤销机制，用于细粒度管理信任关系并增强匿名性。通过全面微基准测试和模拟实验，我们对Anix的评估验证了其在断网场景下的实用性和稳健性。