Converting from JWK format: Public Key could not be parsed

[lemoustachiste]

Hi,

so I eventually have a private key handed to me as PEM. For my tests, I generated a key as follows:

openssl ecparam -name secp256k1 -genkey -noout -out priv_k.pem

I am then converting it to JWK, and generating a public key (both openssl and publicKeyJWKToPEM yield the same result, so I am confident this works).

Then I am trying to convert to secp256k1 key pair to use as DID document, so I'm using this method from @transmute: https://github.com/transmute-industries/verifiable-data/blob/main/packages/secp256k1-key-pair/src/getPublicKeyFromPublicKeyJwk.ts#L3, which uses secp256k1-node under the hood

but this fails with the following error:

Public Key could not be parsed

as this check fails: https://github.com/cryptocoinjs/secp256k1-node/blob/master/lib/elliptic.js#L39. I am not a cryptographer so I don't off the bat understand what it's supposed to check.

Here is my private key as JWK:

{
  "kty": "EC",
  "crv": "K-256",
  "d": "r-MRT1Jq7PgvtmMtiEr_lFgE6iPGkl9pW2kU10F88q4",
  "x": "O4bF2wCslKVW0adio9s4fhSrq4h4_tw9IGNmc93oBas",
  "y": "O9hHmm9rRFWHv3vI4TWsqPxMXKp570_MU71XCLtjkEs"
}

Can you guide me towards the light here? Where is the data wrong?

Thanks