Struct Point

pub struct Point { /* private fields */ }

Affine coordinates (x, y) or identity; 𝔽ₚ is built from FieldElement

Implementations

impl Point

pub fn new_uncompressed(x_bytes: &[u8; 24], y_bytes: &[u8; 24]) -> Result<Self>

Create a new affine point from uncompressed byte coordinates

pub fn identity() -> Self

The identity (point at infinity)

pub fn is_identity(&self) -> bool

Is this the identity point?

pub fn x_coordinate_bytes(&self) -> [u8; 24]

Extract x‐coordinate as big‐endian bytes

pub fn y_coordinate_bytes(&self) -> [u8; 24]

Extract y‐coordinate as big‐endian bytes

pub fn detect_format(bytes: &[u8]) -> Result<PointFormat>

Detect serialized point format

pub fn serialize_uncompressed(&self) -> [u8; 49]

Serialize this point as uncompressed: 0x04 ∥ x ∥ y

pub fn deserialize_uncompressed(bytes: &[u8]) -> Result<Self>

Deserialize from uncompressed bytes (0x04 ∥ x ∥ y), or all‐zeros for identity

pub fn serialize_compressed(&self) -> [u8; 25]

Serialize this point in compressed form: 0x02/0x03 ∥ x

pub fn deserialize_compressed(bytes: &[u8]) -> Result<Self>

Deserialize from compressed bytes (0x02/0x03 ∥ x) or all‐zeros for identity

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

Add two points (group law)

pub fn double(&self) -> Self

Double this point: 2P

pub fn mul(&self, scalar: &Scalar) -> Result<Self>

Scalar multiplication: P * scalar Constant‐time double‐and‐add

Trait Implementations

impl Clone for Point

fn clone(&self) -> Point

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Point

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

Formats the value using the given formatter.

impl PartialEq for Point

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

Tests for self and other values to be equal, and is used by ==.

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

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