Secretbox.Secret_keySecret keys.
Use Secret_key.generate to generate one.
val generate : unit -> tgenerate () generates a random key using Entropy.gather. The function blocks until enough entropy is gathered.
of_bytes b is a secret key from bytes b. Raises Invalid_argument if b's length differs from length.
val pp : Stdlib.Format.formatter -> t -> unitpp ppf pk is an unspecified formatter for secret keys.