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module type Vdf_sig = sig
module Group : S.GROUP
(** [prove_vdf discriminant form difficulty] *)
val prove : Group.t -> Unsigned.UInt64.t -> Group.t * Group.t
(** [verify_vdf discriminant form difficulty form form] *)
val verify : Group.t -> Unsigned.UInt64.t -> Group.t -> Group.t -> bool
end
module Stubs = struct
external prove :
Bytes.t ->
Unsigned.Size_t.t ->
Bytes.t ->
Unsigned.UInt64.t ->
Bytes.t ->
Bytes.t ->
unit = "caml_prove_bytecode_stubs" "caml_prove_stubs"
external verify :
Bytes.t ->
Unsigned.Size_t.t ->
Bytes.t ->
Bytes.t ->
Bytes.t ->
Unsigned.UInt64.t ->
bool = "caml_verify_bytecode_stubs" "caml_verify_stubs"
end
module Make (CG : Class_group.Class_group_sig) : Vdf_sig = struct
module Group = CG
let discriminant_bytes = Utils.Integer.to_bytes CG.discriminant
let prove challenge difficulty =
let challenge_bytes = CG.to_bytes challenge in
let result_bytes = Bytes.create CG.size_in_bytes in
let proof_bytes = Bytes.create CG.size_in_bytes in
Stubs.prove
discriminant_bytes
CG.discriminant_size
challenge_bytes
difficulty
result_bytes
proof_bytes ;
let result = CG.of_bytes_exn result_bytes in
let proof = CG.of_bytes_exn proof_bytes in
(result, proof)
let verify challenge difficulty result proof =
let challenge_bytes = CG.to_bytes challenge in
let result_bytes = CG.to_bytes result in
let proof_bytes = CG.to_bytes proof in
Stubs.verify
discriminant_bytes
CG.discriminant_size
challenge_bytes
result_bytes
proof_bytes
difficulty
end