Struct curve25519_dalek::backend::serial::u32::scalar::Scalar29

pub struct Scalar29(pub [u32; 9]);

Available on curve25519_dalek_bits="32" only.

The Scalar29 struct represents an element in \(\mathbb{Z} / \ell\mathbb{Z}\) as 9 29-bit limbs

Tuple Fields

0: [u32; 9]

Implementations

impl Scalar29

pub fn montgomery_invert(&self) -> Scalar29

Inverts an UnpackedScalar in Montgomery form.

pub fn invert(&self) -> Scalar29

Inverts an UnpackedScalar not in Montgomery form.

impl Scalar29

pub const ZERO: Scalar29 = _

The scalar \( 0 \).

pub fn from_bytes(bytes: &[u8; 32]) -> Scalar29

Unpack a 32 byte / 256 bit scalar into 9 29-bit limbs.

pub fn from_bytes_wide(bytes: &[u8; 64]) -> Scalar29

Reduce a 64 byte / 512 bit scalar mod l.

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

Pack the limbs of this Scalar29 into 32 bytes.

pub fn add(a: &Scalar29, b: &Scalar29) -> Scalar29

Compute a + b (mod l).

pub fn sub(a: &Scalar29, b: &Scalar29) -> Scalar29

Compute a - b (mod l).

pub fn mul(a: &Scalar29, b: &Scalar29) -> Scalar29

Compute a * b (mod l).

pub fn square(&self) -> Scalar29

Compute a^2 (mod l).

pub fn montgomery_mul(a: &Scalar29, b: &Scalar29) -> Scalar29

Compute (a * b) / R (mod l), where R is the Montgomery modulus 2^261

pub fn montgomery_square(&self) -> Scalar29

Compute (a^2) / R (mod l) in Montgomery form, where R is the Montgomery modulus 2^261

pub fn as_montgomery(&self) -> Scalar29

Puts a Scalar29 in to Montgomery form, i.e. computes a*R (mod l)

pub fn from_montgomery(&self) -> Scalar29

Takes a Scalar29 out of Montgomery form, i.e. computes a/R (mod l)

Trait Implementations

impl Clone for Scalar29

fn clone(&self) -> Scalar29

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Scalar29

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

Formats the value using the given formatter.

impl Index<usize> for Scalar29

type Output = u32

The returned type after indexing.

fn index(&self, _index: usize) -> &u32

Performs the indexing (container[index]) operation.

impl IndexMut<usize> for Scalar29

fn index_mut(&mut self, _index: usize) -> &mut u32

Performs the mutable indexing (container[index]) operation.

impl Zeroize for Scalar29

Available on crate feature zeroize only.

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.

impl Copy for Scalar29