Struct salty::MontgomeryPoint

pub struct MontgomeryPoint(pub FieldElement);

Holds the \(u\)-coordinate of a point on the Montgomery form of Curve25519 or its twist.

Implementations

impl MontgomeryPoint

pub fn to_bytes(&self) -> [u8; 32]

Convert this MontgomeryPoint to an array of bytes.

pub fn to_edwards(&self, sign: u8) -> Result<EdwardsPoint>

Attempt to convert to an EdwardsPoint, using the supplied choice of sign for the EdwardsPoint.

Inputs

• sign: a u8 donating the desired sign of the resulting EdwardsPoint. 0 denotes positive and 1 negative.

Return

• Some(EdwardsPoint) if self is the \(u\)-coordinate of a point on (the Montgomery form of) Curve25519;

• None if self is the \(u\)-coordinate of a point on the twist of (the Montgomery form of) Curve25519;

pub fn basepoint() -> Self

Trait Implementations

impl Clone for MontgomeryPoint

fn clone(&self) -> MontgomeryPoint

Returns a copy of the value.

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

Performs copy-assignment from source.

impl ConstantTimeEq for MontgomeryPoint

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

Determine if two items are equal.

impl Copy for MontgomeryPoint

impl Debug for MontgomeryPoint

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

Formats the value using the given formatter.

impl Default for MontgomeryPoint

fn default() -> MontgomeryPoint

Returns the "default value" for a type.

impl Eq for MontgomeryPoint

impl<'a, 'b> Mul<&'b MontgomeryPoint> for &'a Scalar

type Output = MontgomeryPoint

The resulting type after applying the * operator.

fn mul(self, point: &'b MontgomeryPoint) -> MontgomeryPoint

Performs the * operation.

impl<'a, 'b> Mul<&'b Scalar> for &'a MontgomeryPoint

Multiply this MontgomeryPoint by a Scalar.

type Output = MontgomeryPoint

The resulting type after applying the * operator.

fn mul(self, scalar: &'b Scalar) -> MontgomeryPoint

Given self \( = u_0(P) \), and a Scalar \(n\), return \( u_0([n]P) \).

impl<'b> MulAssign<&'b Scalar> for MontgomeryPoint

fn mul_assign(&mut self, scalar: &'b Scalar)

Performs the *= operation.

impl PartialEq<MontgomeryPoint> for MontgomeryPoint

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

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

#[must_use]pub fn ne(&self, other: &Rhs) -> bool

This method tests for !=.