Struct curve25519_dalek::curve::CompressedPoint

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

An affine point (x,y) on the curve is determined by the y-coordinate and the sign of x, marshalled into a 32-byte array.

The first 255 bits of a CompressedPoint represent the y-coordinate. The high bit of the 32nd byte gives the sign of x.

Methods

impl CompressedPoint

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

View this CompressedPoint as an array of bytes.

fn decompress(&self) -> Option<ExtendedPoint>

Attempt to decompress to an ExtendedPoint.

Warning

This function will fail and return None if both vx²-u=0 and vx²+u=0.

Trait Implementations

impl Copy for CompressedPoint

impl Clone for CompressedPoint

fn clone(&self) -> CompressedPoint

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for CompressedPoint

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

Formats the value using the given formatter.

impl Eq for CompressedPoint

impl PartialEq for CompressedPoint

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

Determine if this CompressedPoint is equal to another.

Warning

This function is NOT constant time.

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

This method tests for !=.

impl Index<usize> for CompressedPoint

type Output = u8

The returned type after indexing

fn index<'a>(&'a self, _index: usize) -> &'a u8

The method for the indexing (container[index]) operation