Derive Key

Dfns decentralized key management network supports threshold Diffie-Hellman protocol based on GLOW20 paper. You can use the DH protocol to derive output from a domain separation tag and a seed value. The derivation process is deterministic, i.e. the same Diffie-Hellman key and seed will lead to the same derived output. To ensure reproducibility, we use hash to curve RFC9380 and standard ciphersuite secp256k1_XMD:SHA-256_SSWU_RO_.

This endpoint only supports Diffie-Hellman keys. Regular threshold signature keys, like ECDSA or EdDSA, will not work. You can create a Diffie-Hellman key with the Create Key endpoint using scheme=DH and curve=secp256k1.