alt Hacker NewsIsn’t this the exact problem tree-based broadcast encryption schemes were designed to solve? You could surgically revoke the keys of a bad actor, and I’m not exactly sure, but I think the scope of their ability to affect the jamming resistance of other users is necessarily limited by the tree.
Indeed you can revoke anyone's keys any time with such a scheme. But a single leaked and unrevoked key is still enough to jam it for everyone.
Obviously you could have some "revoke each players keys in turn until the jamming stops" scheme, but it seems suboptimal.