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(*    Copyright (c) 2014 - 2016.                                          *)
(*    Dynamic Ledger Solutions, Inc. <contact@tezos.com>                  *)
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(*    All rights reserved. No warranty, explicit or implicit, provided.   *)
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(** Tezos - X25519/XSalsa20-Poly1305 cryptography *)

type secret_key
type public_key
type nonce

val random_keypair : unit -> secret_key * public_key
val random_nonce : unit -> nonce
val increment_nonce : ?step:int -> nonce -> nonce
val box : secret_key -> public_key -> MBytes.t -> nonce -> MBytes.t
val box_open : secret_key -> public_key -> MBytes.t -> nonce -> MBytes.t