(*****************************************************************************)
(*                                                                           *)
(* Open Source License                                                       *)
(* Copyright (c) 2018 Dynamic Ledger Solutions, Inc. <contact@tezos.com>     *)
(*                                                                           *)
(* Permission is hereby granted, free of charge, to any person obtaining a   *)
(* copy of this software and associated documentation files (the "Software"),*)
(* to deal in the Software without restriction, including without limitation *)
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(* Software is furnished to do so, subject to the following conditions:      *)
(*                                                                           *)
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(* in all copies or substantial portions of the Software.                    *)
(*                                                                           *)
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(* DEALINGS IN THE SOFTWARE.                                                 *)
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(*****************************************************************************)

module H =
  Blake2B.Make
    (Base58)
    (struct
      let name = "Blinded public key hash"

      let title = "A blinded public key hash"

      let b58check_prefix = "\001\002\049\223"

      let size = Some Ed25519.Public_key_hash.size
    end)

include H

let () = Base58.check_encoded_prefix b58check_encoding "btz1" 37

let of_ed25519_pkh activation_code pkh =
  hash_bytes ~key:activation_code [Ed25519.Public_key_hash.to_bytes pkh]

type activation_code = MBytes.t

let activation_code_size = Ed25519.Public_key_hash.size

let activation_code_encoding = Data_encoding.Fixed.bytes activation_code_size

let activation_code_of_hex h =
  if Compare.Int.(String.length h <> activation_code_size * 2) then
    invalid_arg "Blinded_public_key_hash.activation_code_of_hex" ;
  MBytes.of_hex (`Hex h)

module Index = H