https://twitter.com/__geometry__/status/1691439596926885888 Interesting new paper about privacy-preserving contact discovery by Geometry! 

Might be interesting for farcaster @dwr.eth 😄

They use identity based keys/signatures. I’ve mentioned this a couple of times.

https://github.com/Hmac512/ec-basepoint-funsies/blob/9883e9be859b2941c71343893a63a925b78e8b19/identity-signatures.py#L118

Here is some code.

Their paper requires a registration authority.

…

Working on building zkTLS infra/products. A ruthless empiricist and meme connoisseur.

http://opacity.network

The registration authority generates the private key for a users ID (eg phone number).

They propose using a distributed key generation (the authority is N separate entities), so a user’s private key can’t be leaked.

We can do much better than this IMO.

https://github.com/zkemail/zk-email-verify

You can also an email address as the public identifier.

Technowatermelon. Elder Millenial. Building Farcaster. 

nf.td/varun

Told ya @v, identity based signatures is dope.

The construction in that paper requires a pairing operation.

Interesting, will take more time to look at this! Thanks for sharing