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A comment on Sunsetting Tor Messenger. Parent comment
You could make the database so noisy that there's a proof-of-storage cost on anything over a day old.
No guarantee, but something.
Adversaries would want to store only those messages of interest, but that would require breaking the oblivious transfer system.
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You could make the database so noisy that there's a proof-of-storage cost on anything over a day old.
No guarantee, but something.
Adversaries would want to store only those messages of interest, but that would require breaking the oblivious transfer system.