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(*                                                                           *)
(* Open Source License                                                       *)
(* Copyright (c) 2020 Metastate AG <hello@metastate.ch>                      *)
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val sign_message :
  #Protocol_client_context.full ->
  src_sk:Client_keys_v0.sk_uri ->
  block:Block_hash.t ->
  message:string ->
  Tezos_crypto.Signature.V0.t tzresult Lwt.t

val check_message :
  #Protocol_client_context.full ->
  block:Block_hash.t ->
  key_locator:Client_keys_v0.pk_uri ->
  quiet:bool ->
  message:string ->
  signature:Tezos_crypto.Signature.V0.t ->
  bool tzresult Lwt.t