Module Awa.Hmac

type t =
  1. | Plaintext
  2. | Sha1
  3. | Sha2_256
  4. | Sha2_512
type key = {
  1. hmac : t;
  2. key : string;
}
val to_string : t -> string
val of_string : string -> (t, string) Stdlib.result
val digest_len : t -> int
val key_len : t -> int
val known : string -> bool
val supported : t list
val hmacv : t -> key:string -> Stdlib.String.t list -> string