I'm new to crypto and I want to generate a key pair, in C, which would be the equivalent of
openssl ecparam -name secp256k1 -genkey -out ec-priv.pem.
I love libsodium API but I can't find how (if ever) to generate a key pair that is an EC key. I was expecting to get a 32-byte private key, and a 64 byte (+0x04) public key.
Is it something that is not offered by the high-level libsodium API?