I noticed one thing in my efforts that seems strange. the private key created by the erlang code is of a different length than that created by the ravencoin wallet. but they should both be using secp256k1:
iex(1)> {public_key, private_key} = :crypto.generate_key(:ecdh, :secp256k1)
iex(2)> private_key
<<231, 49, 181, 107, 209, 99, 246, 12, 213, 213, 34, 123, 69, 214, 136, 98, 210,
64, 135, 54, 173, 132, 143, 107, 5, 122, 131, 26, 33, 238, 154, 188>>
iex(3)> Base.encode64(private_key)
"5zG1a9Fj9gzV1SJ7RdaIYtJAhzathI9rBXqDGiHumrw="
iex(3)> python_private_key
"L16mQdokXV8hVxGc8su2z9xNkavWPdGGM92B6nt2bMj8yhjTCF8Z"
same is true for the public keys and signatures
