Post #2336641
2026-05-06 21:47 UTC
@grawity@social.treehouse.systems I didn't say it was a smart idea, I just think we live in stupid times. ;-) I'm worried more about load on the server than any real privacy risk. Each prefix download object will have to be encrypted in real time (unless we want to double our disk usage by precomputing them).
Replies (1)
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@andrewg@mastodon.ie 2026-05-06 21:51
@grawity@social.treehouse.systems The sweet spot of prefix length is also an open question. There are 6.3M primary keys in the live SKS dataset, and a similar number of subkeys. To have a reasonable anonymity cohort of >1k you would have to have a prefix length of <16 bits. But it's trivial to mass-generate hash collisions for prefixes that short, so we're also opening the temptation of a vandalism attack.