Re: HTTP HashCash

Hi folks,

just to flag that there is some adjacent work ongoing by the folks at
Tweede Golf and Midnight Blue on this - intended primarily as a defense
mechanism against assymmetric DDoS attacks:

https://nlnet.nl/project/TLS-Client-PoW/

Internet Draft: https://datatracker.ietf.org/doc/draft-venhoek-tls-client-puzzles/
IETF hackathon: https://wiki.ietf.org/en/meeting/121/hackathon#tls-client-puzzles
Implementation: https://github.com/tweedegolf/rustls-pow

I'm happy to bring people into contact with the team, feel free to reach
out.

Best,
Michiel Leenaars
NLnet Foundation

>Just to note, PoW isn't always about auctioning access.
>
>Hashcash-style use can help reduce spam or abuse without needing
>credentials, especially for anonymous or low-friction cases.

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