The original hashcash algorithm was meant to quench email spam which is not comp... | Hacker News

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		simias on March 22, 2019 \| parent \| context \| favorite \| on: Endlessh: An SSH Tarpit The original hashcash algorithm was meant to quench email spam which is not completely unrelated. But in this case I think the parent was proposing tricking the attacker into computing a PoW without realizing it, which sounds pretty tricky.

koolba on March 23, 2019 [–]

Just need a protocol that allows for server initiated key renegotiation with PBKDF. Then you trick the client into repeatedly calculating some new key.

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