414 lines
14 KiB
OCaml
414 lines
14 KiB
OCaml
module Num = struct
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type t = Cstruct.buffer
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external size :
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unit -> int = "sizeof_secp256k1_num" [@@noalloc]
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external copy :
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t -> t -> unit = "ml_secp256k1_num_copy" [@@noalloc]
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external get_bin :
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Cstruct.buffer -> int -> t -> unit = "ml_secp256k1_num_get_bin" [@@noalloc]
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external set_bin :
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t -> Cstruct.buffer -> int -> unit = "ml_secp256k1_num_set_bin" [@@noalloc]
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external mod_inverse :
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t -> t -> t -> unit = "ml_secp256k1_num_mod_inverse" [@@noalloc]
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external jacobi :
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t -> t -> int = "ml_secp256k1_num_jacobi" [@@noalloc]
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external compare :
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t -> t -> int = "ml_secp256k1_num_cmp" [@@noalloc]
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external equal :
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t -> t -> bool = "ml_secp256k1_num_eq" [@@noalloc]
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external add :
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t -> t -> t -> unit = "ml_secp256k1_num_add" [@@noalloc]
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external sub :
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t -> t -> t -> unit = "ml_secp256k1_num_sub" [@@noalloc]
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external mul :
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t -> t -> t -> unit = "ml_secp256k1_num_mul" [@@noalloc]
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external modulo :
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t -> t -> unit = "ml_secp256k1_num_mod" [@@noalloc]
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external shift :
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t -> int -> unit = "ml_secp256k1_num_shift" [@@noalloc]
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external is_zero :
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t -> bool = "ml_secp256k1_num_is_zero" [@@noalloc]
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external is_one :
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t -> bool = "ml_secp256k1_num_is_one" [@@noalloc]
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external is_neg :
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t -> bool = "ml_secp256k1_num_is_neg" [@@noalloc]
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external negate :
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t -> unit = "ml_secp256k1_num_negate" [@@noalloc]
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let size = size ()
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let get_bin cs =
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Cstruct.(get_bin (to_bigarray cs) (len cs))
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let set_bin r cs =
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Cstruct.(set_bin r (to_bigarray cs) (len cs))
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let of_uint16 i =
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let t = Cstruct.create size in
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let cs = Cstruct.create 2 in
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Cstruct.BE.set_uint16 cs 0 i ;
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set_bin t.buffer cs ;
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t.buffer
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let zero () = of_uint16 0
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let one () = of_uint16 1
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let of_uint32 i =
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let t = Cstruct.create size in
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let cs = Cstruct.create 4 in
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Cstruct.BE.set_uint32 cs 0 i ;
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set_bin t.buffer cs ;
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t.buffer
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let of_uint64 i =
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let t = Cstruct.create size in
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let cs = Cstruct.create 8 in
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Cstruct.BE.set_uint64 cs 0 i ;
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set_bin t.buffer cs ;
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t.buffer
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end
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module Scalar = struct
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type t = Cstruct.buffer
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let size = 32
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external const :
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t -> int64 -> int64 -> int64 -> int64 -> int64 -> int64 -> int64 -> int64 -> unit =
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"ml_secp256k1_scalar_const_bytecode" "ml_secp256k1_scalar_const" [@@noalloc]
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let const ?(d7=0L) ?(d6=0L) ?(d5=0L) ?(d4=0L) ?(d3=0L) ?(d2=0L) ?(d1=0L) ?(d0=0L) () =
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let buf = Cstruct.create size in
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const buf.buffer d7 d6 d5 d4 d3 d2 d1 d0 ;
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buf.buffer
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let zero () = const ()
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let one () = const ~d0:1L ()
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let copy t =
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let ret = Cstruct.create size in
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Cstruct.(blit (of_bigarray t) 0 ret 0 size) ;
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ret.buffer
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external clear :
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t -> unit = "ml_secp256k1_scalar_clear" [@@noalloc]
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external get_bits :
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t -> int -> int -> int = "ml_secp256k1_scalar_get_bits" [@@noalloc]
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external get_bits_var :
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t -> int -> int -> int = "ml_secp256k1_scalar_get_bits_var" [@@noalloc]
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external set_b32 :
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t -> Cstruct.buffer -> bool = "ml_secp256k1_scalar_set_b32" [@@noalloc]
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external set_int :
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Cstruct.buffer -> int -> unit = "ml_secp256k1_scalar_set_int" [@@noalloc]
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external get_b32 :
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Cstruct.buffer -> t -> unit = "ml_secp256k1_scalar_get_b32" [@@noalloc]
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external add :
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t -> t -> t -> bool = "ml_secp256k1_scalar_add" [@@noalloc]
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external cadd_bit :
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t -> int -> bool -> unit = "ml_secp256k1_scalar_cadd_bit" [@@noalloc]
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external mul :
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t -> t -> t -> unit = "ml_secp256k1_scalar_mul" [@@noalloc]
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external shr_int :
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t -> int -> int = "ml_secp256k1_scalar_shr_int" [@@noalloc]
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external sqr :
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t -> t -> unit = "ml_secp256k1_scalar_sqr" [@@noalloc]
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external inverse :
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t -> t -> unit = "ml_secp256k1_scalar_inverse" [@@noalloc]
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external inverse_var :
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t -> t -> unit = "ml_secp256k1_scalar_inverse_var" [@@noalloc]
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external negate :
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t -> t -> unit = "ml_secp256k1_scalar_negate" [@@noalloc]
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external is_zero :
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t -> bool = "ml_secp256k1_scalar_is_zero" [@@noalloc]
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external is_one :
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t -> bool = "ml_secp256k1_scalar_is_one" [@@noalloc]
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external is_even :
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t -> bool = "ml_secp256k1_scalar_is_even" [@@noalloc]
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external is_high :
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t -> bool = "ml_secp256k1_scalar_is_high" [@@noalloc]
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external cond_negate :
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t -> bool -> bool = "ml_secp256k1_scalar_cond_negate" [@@noalloc]
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external get_num :
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Num.t -> t -> unit = "ml_secp256k1_scalar_get_num" [@@noalloc]
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external order_get_num :
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Num.t -> unit = "ml_secp256k1_scalar_order_get_num" [@@noalloc]
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external equal :
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t -> t -> bool = "ml_secp256k1_scalar_eq" [@@noalloc]
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external mul_shift_var :
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t -> t -> t -> int -> unit = "ml_secp256k1_mul_shift_var" [@@noalloc]
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let set_b32 t buf = set_b32 t (Cstruct.to_bigarray buf)
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let get_b32 buf t = get_b32 (Cstruct.to_bigarray buf) t
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end
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module Field = struct
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type t = Cstruct.buffer
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module Storage = struct
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type t = Cstruct.buffer
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let size = 32
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let to_cstruct t = Cstruct.of_bigarray t
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let of_cstruct cs =
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let res = Cstruct.create size in
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try
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Cstruct.blit cs 0 res 0 size ;
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Some res.buffer
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with _ -> None
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let of_cstruct_exn cs =
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match of_cstruct cs with
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| Some t -> t
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| None -> invalid_arg "Field.Storage.of_cstruct_exn"
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external const :
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t -> int64 -> int64 -> int64 -> int64 -> int64 -> int64 -> int64 -> int64 -> unit =
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"ml_secp256k1_fe_storage_const_bytecode" "ml_secp256k1_fe_storage_const" [@@noalloc]
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let const ?(d7=0L) ?(d6=0L) ?(d5=0L) ?(d4=0L) ?(d3=0L) ?(d2=0L) ?(d1=0L) ?(d0=0L) () =
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let buf = Cstruct.create size in
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const buf.buffer d7 d6 d5 d4 d3 d2 d1 d0 ;
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buf.buffer
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external cmov :
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t -> t -> bool -> unit = "ml_secp256k1_fe_storage_cmov" [@@noalloc]
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end
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let size = 40
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external const :
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t -> int64 -> int64 -> int64 -> int64 -> int64 -> int64 -> int64 -> int64 -> unit =
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"ml_secp256k1_fe_const_bytecode" "ml_secp256k1_fe_const" [@@noalloc]
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let const ?(d7=0L) ?(d6=0L) ?(d5=0L) ?(d4=0L) ?(d3=0L) ?(d2=0L) ?(d1=0L) ?(d0=0L) () =
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let buf = Cstruct.create size in
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const buf.buffer d7 d6 d5 d4 d3 d2 d1 d0 ;
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buf.buffer
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external normalize :
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t -> unit = "ml_secp256k1_fe_normalize" [@@noalloc]
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external normalize_weak :
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t -> unit = "ml_secp256k1_fe_normalize_weak" [@@noalloc]
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external normalize_var :
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t -> unit = "ml_secp256k1_fe_normalize_var" [@@noalloc]
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external normalizes_to_zero :
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t -> bool = "ml_secp256k1_fe_normalizes_to_zero" [@@noalloc]
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external normalizes_to_zero_var :
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t -> bool = "ml_secp256k1_fe_normalizes_to_zero_var" [@@noalloc]
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external set_int :
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t -> int -> unit = "ml_secp256k1_fe_set_int" [@@noalloc]
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external clear :
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t -> unit = "ml_secp256k1_fe_clear" [@@noalloc]
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external is_zero :
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t -> bool = "ml_secp256k1_fe_is_zero" [@@noalloc]
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external is_odd :
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t -> bool = "ml_secp256k1_fe_is_odd" [@@noalloc]
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external equal :
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t -> t -> bool = "ml_secp256k1_fe_equal" [@@noalloc]
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external equal_var :
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t -> t -> bool = "ml_secp256k1_fe_equal_var" [@@noalloc]
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external cmp_var :
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t -> t -> int = "ml_secp256k1_fe_cmp_var" [@@noalloc]
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external set_b32 :
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t -> Cstruct.buffer -> bool = "ml_secp256k1_fe_set_b32" [@@noalloc]
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external get_b32 :
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Cstruct.buffer -> t -> unit = "ml_secp256k1_fe_get_b32" [@@noalloc]
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external negate :
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t -> t -> int -> unit = "ml_secp256k1_fe_negate" [@@noalloc]
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external mul_int :
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t -> int -> unit = "ml_secp256k1_fe_mul_int" [@@noalloc]
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external add :
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t -> t -> unit = "ml_secp256k1_fe_add" [@@noalloc]
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external mul :
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t -> t -> t -> unit = "ml_secp256k1_fe_mul" [@@noalloc]
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external sqr :
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t -> t -> unit = "ml_secp256k1_fe_sqr" [@@noalloc]
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external sqrt :
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t -> t -> int = "ml_secp256k1_fe_sqrt" [@@noalloc]
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external is_quad_var :
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t -> bool = "ml_secp256k1_fe_is_quad_var" [@@noalloc]
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external inv :
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t -> t -> unit = "ml_secp256k1_fe_inv" [@@noalloc]
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external inv_var :
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t -> t -> unit = "ml_secp256k1_fe_inv_var" [@@noalloc]
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external inv_all_var :
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t -> Cstruct.buffer -> int -> unit = "ml_secp256k1_fe_inv_all_var" [@@noalloc]
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external to_storage :
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Storage.t -> t -> unit = "ml_secp256k1_fe_to_storage" [@@noalloc]
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external from_storage :
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t -> Storage.t -> unit = "ml_secp256k1_fe_from_storage" [@@noalloc]
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external cmov :
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t -> t -> bool -> unit = "ml_secp256k1_fe_cmov" [@@noalloc]
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let inv_all_var r fes =
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let nb_fe = List.length fes in
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let cs = Cstruct.create (nb_fe * size) in
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List.iteri
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(fun i fe -> Cstruct.(blit (of_bigarray fe) 0 cs (i*size) size)) fes ;
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inv_all_var r cs.buffer nb_fe ;
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Cstruct.memset cs 0
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let set_b32 t buf = set_b32 t (Cstruct.to_bigarray buf)
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let get_b32 buf t = get_b32 (Cstruct.to_bigarray buf) t
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let compare = cmp_var
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end
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module Group = struct
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type t = Cstruct.buffer
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type ge = t
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let size = 2 * Field.size + 8
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module Storage = struct
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type t = Cstruct.buffer
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let size = 2 * Field.Storage.size
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let to_cstruct t = Cstruct.of_bigarray t
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let of_cstruct cs =
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let res = Cstruct.create size in
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try
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Cstruct.blit cs 0 res 0 size ;
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Some res.buffer
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with _ -> None
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let of_cstruct_exn cs =
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match of_cstruct cs with
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| Some t -> t
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| None -> invalid_arg "Group.Storage.of_cstruct_exn"
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external of_fields :
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t -> Field.Storage.t -> Field.Storage.t -> unit =
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"ml_secp256k1_ge_storage_of_fields" [@@noalloc]
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let of_fields ?(x=Field.const ()) ?(y=Field.const ()) () =
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let cs = Cstruct.create size in
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of_fields cs.buffer x y ;
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cs.buffer
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external cmov : t -> t -> bool -> unit =
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"ml_secp256k1_ge_storage_cmov" [@@noalloc]
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end
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module Jacobian = struct
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type t = Cstruct.buffer
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let size = 3 * Field.size + 8
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external of_fields :
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t -> Field.t -> Field.t -> Field.t -> bool -> unit =
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"ml_secp256k1_gej_of_fields" [@@noalloc]
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external set_infinity : t -> unit =
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"ml_secp256k1_gej_set_infinity" [@@noalloc]
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external set_ge : t -> ge -> unit =
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"ml_secp256k1_gej_set_ge" [@@noalloc]
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external get_ge : ge -> t -> unit =
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"ml_secp256k1_ge_set_gej" [@@noalloc]
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external eq_x_var : Field.t -> t -> int =
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"ml_secp256k1_gej_eq_x_var" [@@noalloc]
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external neg : t -> t -> unit =
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"ml_secp256k1_gej_neg" [@@noalloc]
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external is_infinity : t -> bool =
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"ml_secp256k1_gej_is_infinity" [@@noalloc]
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external has_quad_y_var : t -> bool =
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"ml_secp256k1_gej_has_quad_y_var" [@@noalloc]
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external double_nonzero : t -> t -> Field.t option -> unit =
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"ml_secp256k1_gej_double_nonzero" [@@noalloc]
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external double_var : t -> t -> Field.t option -> unit =
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"ml_secp256k1_gej_double_var" [@@noalloc]
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external add_var : t -> t -> t -> Field.t option -> unit =
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"ml_secp256k1_gej_add_var" [@@noalloc]
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external add_ge : t -> t -> ge -> unit =
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"ml_secp256k1_gej_add_ge" [@@noalloc]
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external add_ge_var : t -> t -> ge -> Field.t option -> unit =
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"ml_secp256k1_gej_add_ge_var" [@@noalloc]
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external add_zinv_var : t -> t -> ge -> Field.t -> unit =
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"ml_secp256k1_gej_add_zinv_var" [@@noalloc]
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external mul : t -> ge -> Scalar.t -> unit =
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"ml_secp256k1_ecmult_const" [@@noalloc]
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external clear : t -> unit =
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"ml_secp256k1_gej_clear" [@@noalloc]
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external rescale : t -> Field.t -> unit =
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"ml_secp256k1_gej_rescale" [@@noalloc]
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let of_fields ?(x=Field.const ()) ?(y=Field.const ()) ?(z=Field.const ()) ?(infinity=false) () =
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let cs = Cstruct.create size in
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of_fields cs.buffer x y z infinity ;
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cs.buffer
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let double_nonzero ?rzr r a = double_nonzero r a rzr
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let double_var ?rzr r a = double_var r a rzr
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let add_var ?rzr r a b = add_var r a b rzr
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let add_ge_var ?rzr r a b = add_ge_var r a b rzr
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end
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external of_fields :
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t -> Field.t -> Field.t -> bool -> unit =
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"ml_secp256k1_ge_of_fields" [@@noalloc]
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external set_xy : t -> Field.t -> Field.t -> unit =
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"ml_secp256k1_ge_set_xy" [@@noalloc]
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external set_xquad : t -> Field.t -> unit =
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"ml_secp256k1_ge_set_xquad" [@@noalloc]
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external set_xovar : t -> Field.t -> int -> bool =
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"ml_secp256k1_ge_set_xquad" [@@noalloc]
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external is_infinity : t -> bool =
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"ml_secp256k1_ge_is_infinity" [@@noalloc]
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external is_valid_var : t -> bool =
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"ml_secp256k1_ge_is_valid_var" [@@noalloc]
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external neg : t -> t -> unit =
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"ml_secp256k1_ge_neg" [@@noalloc]
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external clear : t -> unit =
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"ml_secp256k1_ge_clear" [@@noalloc]
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external to_storage : Storage.t -> t -> unit =
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"ml_secp256k1_ge_to_storage" [@@noalloc]
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external from_storage : t -> Storage.t -> unit =
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"ml_secp256k1_ge_from_storage" [@@noalloc]
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let of_fields ?(x=Field.const ()) ?(y=Field.const ()) ?(infinity=false) () =
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let cs = Cstruct.create size in
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of_fields cs.buffer x y infinity ;
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cs.buffer
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let g =
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let x = Field.const
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~d7:0x79BE667EL ~d6:0xF9DCBBACL ~d5:0x55A06295L ~d4:0xCE870B07L
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~d3:0x029BFCDBL ~d2:0x2DCE28D9L ~d1:0x59F2815BL ~d0:0x16F81798L () in
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let y = Field.const
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~d7:0x483ADA77L ~d6:0x26A3C465L ~d5:0x5DA4FBFCL ~d4:0x0E1108A8L
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~d3:0xFD17B448L ~d2:0xA6855419L ~d1:0x9C47D08FL ~d0:0xFB10D4B8L () in
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of_fields ~x ~y ~infinity:false ()
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external serialize : t -> Cstruct.buffer -> int -> bool -> int =
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"ml_secp256k1_eckey_pubkey_serialize" [@@noalloc]
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external parse : t -> Cstruct.buffer -> int -> bool =
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"ml_secp256k1_eckey_pubkey_parse" [@@noalloc]
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let to_pubkey ?(compress=true) cs e =
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match serialize e cs.Cstruct.buffer cs.len compress with
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| 0 -> failwith "Group.to_pubkey"
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| len -> Cstruct.sub cs 0 len
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let from_pubkey t cs =
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match parse t cs.Cstruct.buffer cs.len with
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| false -> failwith "Group.from_pubkey"
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| true -> ()
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end
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