"PrivateKey" --> "KeyPair"
crypto_data_decrypt/6, % +CipherText, +Algorithm, +Key, +IV, -PlainText, +Options
ed25519_new_keypair/1, % -KeyPair
ed25519_keypair_public_key/2, % +KeyPair, +PublicKey
- ed25519_sign/4, % +PrivateKey, +Data, -Signature, +Options
+ ed25519_sign/4, % +KeyPair, +Data, -Signature, +Options
ed25519_verify/4, % +PublicKey, +Data, -Signature, +Options
crypto_name_curve/2, % +Name, -Curve
crypto_curve_order/2, % +Curve, -Order
