derivePublicKey

actual fun derivePublicKey(privateKey: PrivateKey, schema: SignatureScheme): PublicKey
actual fun derivePublicKey(privateKey: <Error class: unknown class>, schema: <Error class: unknown class>): <Error class: unknown class>
expect fun derivePublicKey(privateKey: PrivateKey, schema: SignatureScheme): PublicKey
actual fun derivePublicKey(privateKey: PrivateKey, schema: SignatureScheme): PublicKey