Struct Scalar 

pub struct Scalar(/* private fields */);

A scalar: an integer modulo the curve order n.

Always canonical (in [0, n)). Arithmetic is served by the curve’s arithmetic driver.

Implementations

impl Scalar

pub const ZERO: Self

The scalar zero.

pub fn from_bytes(bytes: &[u8; 32]) -> Result<Self, Error>

Parse a big-endian scalar. Fails if it is not less than n.

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

The scalar as big-endian bytes.

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

The scalar as big-endian bytes.

pub fn as_driver(&self) -> &P256Scalar

The driver representation.

pub fn is_zero(&self) -> bool

Whether the scalar is zero, in constant time.

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

self + other mod n.

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

self - other mod n.

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

self * other mod n.

pub fn invert(&self) -> Option<Self>

self^-1 mod n, or None if self is zero.

Trait Implementations

impl Clone for Scalar

fn clone(&self) -> Scalar

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Scalar

impl Debug for Scalar

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

Formats the value using the given formatter.

impl Eq for Scalar

impl Format for Scalar

where P256Scalar: Format,

fn format(&self, f: Formatter<'_>)

Writes the defmt representation of self to fmt.

impl From<Scalar> for P256Scalar

fn from(s: Scalar) -> Self

Converts to this type from the input type.

impl PartialEq for Scalar

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Scalar

impl TryFrom<Scalar> for SecretKey

type Error = Error

The type returned in the event of a conversion error.

fn try_from(k: Scalar) -> Result<Self, Error>

Performs the conversion.

impl TryFrom<Scalar> for SigningKey

type Error = Error

The type returned in the event of a conversion error.

fn try_from(k: Scalar) -> Result<Self, Error>

Performs the conversion.