Revision d986da70de5bf40532791fbc06822078d8f82d6a authored by Marina Polubelova on 13 June 2023, 13:39:22 UTC, committed by Marge Bot on 14 June 2023, 12:08:13 UTC
1 parent f382ac8
utils.ml
(*****************************************************************************)
(* *)
(* MIT License *)
(* Copyright (c) 2022 Nomadic Labs <contact@nomadic-labs.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 Plompiler
module Curve = Mec.Curve.Jubjub.AffineEdwards
let of_int x = Z.of_int x |> S.of_z
let to_bls_scalar s = Curve.Base.of_z (S.to_z s)
let of_bls_scalar s = S.of_z (Curve.Base.to_z s)
let point_to_affine (u, v) =
Curve.unsafe_from_coordinates ~u:(to_bls_scalar u) ~v:(to_bls_scalar v)
let affine_to_point p =
let u = Curve.get_u_coordinate p in
let v = Curve.get_v_coordinate p in
(of_bls_scalar u, of_bls_scalar v)
let random_int = Stdlib.Random.int
let random_z bound = Random.int64 (Z.to_int64 bound) |> Z.of_int64
let nb_bits_base = Z.numbits S.order
let curve_base_to_s c = S.of_z @@ Curve.Base.to_z c
let curve_base_of_s c = Curve.Base.of_z @@ S.to_z c
let curve_scalar_to_s c = S.of_z @@ Curve.Scalar.to_z c
let curve_scalar_of_s c = Curve.Scalar.of_z @@ S.to_z c
let scalar_of_bytes bs =
assert (Bytes.length bs < S.size_in_bytes) ;
(* The bytes are interpreted as a Z integer *)
let z = Z.of_bits @@ Bytes.to_string bs in
S.of_z z
let scalar_to_bytes s = S.to_z s |> Z.to_bits |> Bytes.of_string
Computing file changes ...