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Asymmetric Message Franking: Content Moderation for Metadata-Private End-to-End Encryption
message franking designated verifier signatures deniability
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2019/5/28
Content moderation is crucial for stopping abuse and harassment via messaging on online platforms. Existing moderation mechanisms, such as message franking, require platform providers to see user iden...
Stadium: A Distributed Metadata-Private Messaging System
anonymity privacy mixnets
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2016/12/8
Private communication over the Internet continues to be a challenging problem. Even if messages are encrypted, it is hard to deliver them without revealing metadata about which pairs of users are comm...