Curvy Protocol

The Curvy protocol is a stealth address protocol based on elliptic curve pairing, presented by its authors as an improvement over earlier pairing-based schemes. The authors say it overcomes shortcomings in two prior papers: EDKSAP, which leaves a gap letting the sender and the viewing-key holder pair to obtain the stealth address private key, and another scheme where the private key can be computed by the sender without teamwork. In their implementation in Go with the gnark-crypto library, the authors compared ephemeral public key registry search times against DKSAP from BaseSAP for 5000 to 80000 announcements.