pir
Articles with this tag
by Max
November 29 2025
Sifting Through the Archive: Private Set Membership for Blossom
Binary Fuse filters let Blossom clients privately check which files exist on a server - download a compact filter once, query locally with zero server load, and use delta lists for real-time accuracy.
by Max
December 23 2025
The Gap Between PIR and Nostr: Open Problems in Private Relay Queries
Can PIR hide Nostr queries from relays? Compound filters and subscriptions don't map to existing schemes. Here are the open problems.
by Max
November 28 2025
Private Relay Connections: Zero-Knowledge Solutions for Nostr
Nostr relays see everything - who connects, what they fetch, how often they post. Zero-knowledge cryptography can fix all three problems: Semaphore-based authentication hides which whitelisted user is connecting, private information retrieval hides which notes you're fetching, and Privacy Pass enables rate limiting without identity linkage.