Struct ed448_goldilocks::curve::ExtendedPoint

pub struct ExtendedPoint { /* private fields */ }

Represent points on the (untwisted) edwards curve using Extended Homogenous Projective Co-ordinates (x, y) -> (X/Z, Y/Z, Z, T) a = 1, d = -39081 XXX: Make this more descriptive Should this be renamed to EdwardsPoint so that we are consistent with Dalek crypto? Necessary as ExtendedPoint is not regular lingo?

Implementations

impl ExtendedPoint

pub fn identity() -> ExtendedPoint

Identity point

pub const fn generator() -> ExtendedPoint

Generator for the prime subgroup

pub fn to_montgomery(&self) -> MontgomeryPoint

pub fn scalar_mul(&self, scalar: &Scalar) -> ExtendedPoint

Generic scalar multiplication to compute s*P

pub fn scalar_mod_four(&self, scalar: &Scalar) -> ExtendedPoint

Returns (scalar mod 4) * P in constant time

pub fn compress(&self) -> CompressedEdwardsY

pub fn add(&self, other: &ExtendedPoint) -> ExtendedPoint

pub fn double(&self) -> ExtendedPoint

pub fn to_affine(&self) -> AffinePoint

pub fn to_twisted(&self) -> TwistedExtendedPoint

pub fn negate(&self) -> ExtendedPoint

pub fn torque(&self) -> ExtendedPoint

Trait Implementations

impl Clone for ExtendedPoint

fn clone(&self) -> ExtendedPoint

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl ConditionallySelectable for ExtendedPoint

fn conditional_select(a: &Self, b: &Self, choice: Choice) -> Self

Select a or b according to choice.

fn conditional_assign(&mut self, other: &Self, choice: Choice)

Conditionally assign other to self, according to choice.

fn conditional_swap(a: &mut Self, b: &mut Self, choice: Choice)

Conditionally swap self and other if choice == 1; otherwise, reassign both unto themselves.

impl ConstantTimeEq for ExtendedPoint

fn ct_eq(&self, other: &Self) -> Choice

Determine if two items are equal.

impl Debug for ExtendedPoint

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for ExtendedPoint

fn default() -> ExtendedPoint

Returns the “default value” for a type.

impl PartialEq<ExtendedPoint> for ExtendedPoint

fn eq(&self, other: &ExtendedPoint) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=.

impl Copy for ExtendedPoint

impl Eq for ExtendedPoint