Struct curve25519_dalek::montgomery::MontgomeryPoint

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

[−] Expand description

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

Implementations

impl MontgomeryPoint[−]

pub fn as_bytes<'a>(&'a self) -> &'a [u8; 32][−]

View this MontgomeryPoint as an array of bytes.

pub 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[+]

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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[+]

Equality of MontgomeryPoints is defined mod p.

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

Determine if two items are equal.

impl Copy for MontgomeryPoint

impl Debug for MontgomeryPoint[+]

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

Formats the value using the given formatter.

impl Default for MontgomeryPoint[+]

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fn default() -> MontgomeryPoint[−]

Returns the “default value” for a type.

impl Eq for MontgomeryPoint

impl Hash for MontgomeryPoint[+]

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fn hash<__H: Hasher>(&self, state: &mut __H)[−]

Feeds this value into the given Hasher.

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

Feeds a slice of this type into the given Hasher.

impl<'b> Mul<&'b MontgomeryPoint> for Scalar[+]

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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 MontgomeryPoint> for &'a Scalar[+]

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type Output = MontgomeryPoint

The resulting type after applying the * operator.

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

Performs the * operation.

impl<'b> Mul<&'b Scalar> for MontgomeryPoint[+]

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type Output = MontgomeryPoint

The resulting type after applying the * operator.

fn mul(self, rhs: &'b Scalar) -> 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<'a> Mul<MontgomeryPoint> for &'a Scalar[+]

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type Output = MontgomeryPoint

The resulting type after applying the * operator.

fn mul(self, rhs: MontgomeryPoint) -> MontgomeryPoint[−]

Performs the * operation.

impl Mul<MontgomeryPoint> for Scalar[+]

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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[+]

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type Output = MontgomeryPoint

The resulting type after applying the * operator.

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

Performs the * operation.

impl Mul<Scalar> for MontgomeryPoint[+]

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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[+]

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

Performs the *= operation.

impl MulAssign<Scalar> for MontgomeryPoint[+]

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fn mul_assign(&mut self, rhs: Scalar)[−]

Performs the *= operation.

impl PartialEq<MontgomeryPoint> for MontgomeryPoint[+]

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

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

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

This method tests for !=.

impl Zeroize for MontgomeryPoint[+]

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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.