package octez-libs

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

Install 

dune-project
 Dependency

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

Authors

  1. T
    Tezos devteam

Maintainers

  1. C
    contact@tezos.com

Sources

tezos-octez-v20.1.tag.bz2
sha256=ddfb5076eeb0b32ac21c1eed44e8fc86a6743ef18ab23fff02d36e365bb73d61
sha512=d22a827df5146e0aa274df48bc2150b098177ff7e5eab52c6109e867eb0a1f0ec63e6bfbb0e3645a6c2112de3877c91a17df32ccbff301891ce4ba630c997a65

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

Module type CurveSig.JacobianWeierstrassTSource

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

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