09 — Roadmap · 05
Oblivious hashing
PATH FINDER
Today a member sends the identifier in the clear. The operator hashes it with a server-side pepper. That is not zero knowledge. Oblivious hashing is the construction that was declared so the finder block can one day say something other than server_side.
NextQ2 2027
- Target
- Q2 2027
- Year
- 2027
- Window
- Q2
- Status
- next
The hash protects the database, not members from the network.
What ships
A specified construction: the member blinds, the network peppers, the member unblinds. Discovery must name the mode. Until it ships, finder.hashing stays server_side and a prospective member has a right to refuse.
What it is not
A reason to distribute the pepper. A secret shared with fifty members is not a secret. Argon2id remains a speed bump, not a defence, if the pepper leaks.