Struct curve25519_dalek::montgomery::MontgomeryPoint

pub struct MontgomeryPoint(pub [u8; 32]);

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

Tuple Fields

0: [u8; 32]

Implementations

impl MontgomeryPoint

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

View this MontgomeryPoint as an array of bytes.

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

Convert this MontgomeryPoint to an array of bytes.

pub fn to_edwards(&self, sign: u8) -> Option<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;

Trait Implementations

impl Clone for MontgomeryPoint

fn clone(&self) -> MontgomeryPoint

Returns a copy of the value.

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

Performs copy-assignment from source.

impl ConstantTimeEq for MontgomeryPoint

Equality of MontgomeryPoints is defined mod p.

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

Determine if two items are equal.

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 Hash for MontgomeryPoint

fn hash<H: Hasher>(&self, state: &mut H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Identity for MontgomeryPoint

fn identity() -> MontgomeryPoint

Return the group identity element, which has order 4.

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<'b> Mul<&'b MontgomeryPoint> for Scalar

type Output = MontgomeryPoint

The resulting type after applying the * operator.

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

Performs the * operation.

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

Multiply this MontgomeryPoint by a Scalar.

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

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

type Output = MontgomeryPoint

The resulting type after applying the * operator.

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

type Output = MontgomeryPoint

The resulting type after applying the * operator.

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

Performs the * operation.

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

type Output = MontgomeryPoint

The resulting type after applying the * operator.

fn mul(self, rhs: MontgomeryPoint) -> MontgomeryPoint

Performs the * operation.

impl Mul<MontgomeryPoint> for Scalar

type Output = MontgomeryPoint

The resulting type after applying the * operator.

fn mul(self, rhs: MontgomeryPoint) -> MontgomeryPoint

Performs the * operation.

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

type Output = MontgomeryPoint

The resulting type after applying the * operator.

fn mul(self, rhs: Scalar) -> MontgomeryPoint

Performs the * operation.

impl Mul<Scalar> for MontgomeryPoint

type Output = MontgomeryPoint

The resulting type after applying the * operator.

fn mul(self, rhs: Scalar) -> MontgomeryPoint

Performs the * operation.

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

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

Performs the *= operation.

impl MulAssign<Scalar> for MontgomeryPoint

fn mul_assign(&mut self, rhs: 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 ==.

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

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Zeroize for MontgomeryPoint

fn zeroize(&mut self)

Zero out this object from memory using Rust intrinsics which ensure the zeroization operation is not “optimized away” by the compiler.

impl Copy for MontgomeryPoint

impl Eq for MontgomeryPoint