Struct SecretScalar 

pub struct SecretScalar<const LIMBS: usize> { /* private fields */ }

Fixed-width scalar represented as little-endian u64 limbs.

Implementations

impl<const LIMBS: usize> SecretScalar<LIMBS>

pub const fn new(limbs: [u64; LIMBS]) -> Self

Construct a scalar from its little-endian limb representation.

pub fn as_limbs(&self) -> &[u64; LIMBS]

Borrow the underlying little-endian limbs.

pub fn to_limbs(self) -> [u64; LIMBS]

Consume the scalar and return the underlying limbs.

pub const fn bit_len() -> usize

Total bit width of the scalar container.

pub fn bit_be(&self, i: usize) -> Choice

Return the bit at absolute big-endian index i.

i = 0 is the most-significant bit of the highest limb and i = bit_len() - 1 is the least-significant bit of limb 0.

Trait Implementations

impl<const LIMBS: usize> Clone for SecretScalar<LIMBS>

fn clone(&self) -> SecretScalar<LIMBS>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<const LIMBS: usize> ConditionallySelectable for SecretScalar<LIMBS>

fn conditional_select(a: &Self, b: &Self, choice: Choice) -> Self

Select a or b according to choice.

fn conditional_assign(&mut self, other: &Self, choice: Choice)

Conditionally assign other to self, according to choice.

fn conditional_swap(a: &mut Self, b: &mut Self, choice: Choice)

Conditionally swap self and other if choice == 1; otherwise, reassign both unto themselves.

impl<const LIMBS: usize> ConstantTimeEq for SecretScalar<LIMBS>

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

Determine if two items are equal.

fn ct_ne(&self, other: &Self) -> Choice

Determine if two items are NOT equal.

impl<const LIMBS: usize> Debug for SecretScalar<LIMBS>

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

Formats the value using the given formatter.

impl<const LIMBS: usize> Default for SecretScalar<LIMBS>

fn default() -> Self

Returns the “default value” for a type.

impl<const LIMBS: usize> PartialEq for SecretScalar<LIMBS>

fn eq(&self, other: &SecretScalar<LIMBS>) -> 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.

impl<const LIMBS: usize> Copy for SecretScalar<LIMBS>

impl<const LIMBS: usize> Eq for SecretScalar<LIMBS>

impl<const LIMBS: usize> StructuralPartialEq for SecretScalar<LIMBS>