Revision e8af0329db79f45c4667a5eebfa67ac36687c954 authored by Sebastien Mondet on 26 November 2019, 22:09:35 UTC, committed by Benjamin Canou on 30 December 2019, 16:03:01 UTC
1 parent eaba490
pvss_secp256k1.ml
(*****************************************************************************)
(* *)
(* 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 *)
(* the rights to use, copy, modify, merge, publish, distribute, sublicense, *)
(* and/or sell copies of the Software, and to permit persons to whom the *)
(* Software is furnished to do so, subject to the following conditions: *)
(* *)
(* The above copyright notice and this permission notice shall be included *)
(* in all copies or substantial portions of the Software. *)
(* *)
(* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR*)
(* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, *)
(* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL *)
(* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER*)
(* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING *)
(* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER *)
(* DEALINGS IN THE SOFTWARE. *)
(* *)
(*****************************************************************************)
open Secp256k1_group
module G : Pvss.CYCLIC_GROUP = struct
module Z_m = struct
include Group.Scalar
let n = Group.order
let ( + ) = Group.Scalar.add
let ( * ) = Group.Scalar.mul
let ( - ) = Group.Scalar.sub
let ( = ) = Group.Scalar.equal
let inv = Group.Scalar.inverse
end
include Group
let name = "secp256k1"
(* This pvss algorithm assumes the public keys of the participants receiving
shares are based on g2, so we set g2 to Group.g to match regular Secp256k1
public keys.
*)
let g1 = Group.h
let g2 = Group.g
(* We use a multiplicative notation in the pvss module, but
secp256k1 usually uses an additive notation. *)
let ( * ) = Group.(( + ))
let pow x n = Group.mul n x
let of_bits b = try Some (Group.of_bits_exn b) with _ -> None
end
include Pvss.MakePvss (G)
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