package octez-libs

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A package that contains multiple base libraries used by the Octez suite

Install

Dune Dependency

www.tezos.com Readme Edit opam file Versions (5)

Authors

T

Tezos devteam

Maintainers

C

contact@tezos.com

Sources

octez-19.0.tar.gz

sha256=c6df840ebbf115e454db949028c595bec558a59a66cade73b52a6d099d6fa4d4

sha512=d8aee903b9fe130d73176bc8ec38b78c9ff65317da3cb4f3415f09af0c625b4384e7498201fdb61aa39086a7d5d409d0ab3423f9bc3ab989a680cf444a79bc13

doc/octez-libs.mec/Mec/CurveSig/module-type-JacobianWeierstrassT/index.html

Module type `CurveSig.JacobianWeierstrassT`Source

include WeierstrassT

include BASE

exception Not_on_curve of Bytes.t

type t

Represents an element on the curve. In the case of a curve with a cofactor, the element is not necessarily in the prime subgroup.

val size_in_bytes : int

The size of a point representation, in bytes

module Scalar : Bls12_381.Ff_sig.PRIME

module Base : Bls12_381.Ff_sig.PRIME

val check_bytes : Bytes.t -> bool

Check if a point, represented as a byte array, is on the curve *

val of_bytes_opt : Bytes.t -> t option

Attempt to construct a point from a byte array

val of_bytes_exn : Bytes.t -> t

Attempt to construct a point from a byte array. Raise Not_on_curve if the point is not on the curve

val to_bytes : t -> Bytes.t

Return a representation in bytes

val zero : t

Zero of the elliptic curve

val one : t

A fixed generator of the elliptic curve

val is_zero : t -> bool

Return true if the given element is zero

val random : ?state:Random.State.t -> unit -> t

Generate a random element

val add : t -> t -> t

Return the addition of two element

val double : t -> t

Double the element

val negate : t -> t

Return the opposite of the element

val eq : t -> t -> bool

Return true if the two elements are algebraically the same

val mul : t -> Scalar.t -> t

Multiply an element by a scalar

val a : Base.t

val b : Base.t

val cofactor : Z.t

val is_on_curve : x:Base.t -> y:Base.t -> z:Base.t -> bool

is_on_curve ~x ~y ~z returns true if the coordinates (x, y, z) represents a point on the curve. It does not check the point is in the prime subgroup.

val is_in_prime_subgroup : x:Base.t -> y:Base.t -> z:Base.t -> bool

is_in_prime_subgroup ~x ~y ~z returns true if the coordinates (x, y, z) represents a point in the prime subgroup. The coordinates must be a point on the curve

val get_x_coordinate : t -> Base.t

val get_y_coordinate : t -> Base.t

val get_z_coordinate : t -> Base.t

val from_coordinates_opt : x:Base.t -> y:Base.t -> z:Base.t -> t option

Build a point from the projective coordinates. If the point is not on the curve and in the subgroup, returns None

val from_coordinates_exn : x:Base.t -> y:Base.t -> z:Base.t -> t

Build a point from the projective coordinates. If the point is not on the curve and in the subgroup, raise Not_on_curve.

val get_affine_x_coordinate : t -> Base.t

val get_affine_y_coordinate : t -> Base.t

val from_affine_coordinates_exn : x:Base.t -> y:Base.t -> t

val from_affine_coordinates_opt : x:Base.t -> y:Base.t -> t