+Data, -Signature, +Options)Create an ECDSA signature for Data with EC private key Key.
Among the most common cases is signing a hash that was created with crypto_data_hash/3
or other predicates of this library. For this reason, the default
hex) assumes that Data is an atom,
string, character list or code list representing the data in hexadecimal
notation. See rsa_sign/4 for an
- Encoding to use for Data. Default is