Struct Scalar52 

pub struct Scalar52(pub [u64; 5]);

Available on docsrs and curve25519_dalek_bits=64 only.

The Scalar52 struct represents an element in \(\mathbb Z / \ell \mathbb Z\) as 5 \(52\)-bit limbs.

Tuple Fields

0: [u64; 5]

Implementations

impl Scalar52

pub fn montgomery_invert(&self) -> Scalar52

Inverts an UnpackedScalar in Montgomery form.

pub fn invert(&self) -> Scalar52

Inverts an UnpackedScalar not in Montgomery form.

impl Scalar52

pub const ZERO: Scalar52

The scalar \( 0 \).

pub fn from_bytes(bytes: &[u8; 32]) -> Scalar52

Unpack a 32 byte / 256 bit scalar into 5 52-bit limbs.

pub fn from_bytes_wide(bytes: &[u8; 64]) -> Scalar52

Reduce a 64 byte / 512 bit scalar mod l

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

Pack the limbs of this Scalar52 into 32 bytes

pub fn add(a: &Scalar52, b: &Scalar52) -> Scalar52

Compute a + b (mod l)

pub fn sub(a: &Scalar52, b: &Scalar52) -> Scalar52

Compute a - b (mod l)

pub fn mul(a: &Scalar52, b: &Scalar52) -> Scalar52

Compute a * b (mod l)

pub fn square(&self) -> Scalar52

Compute a^2 (mod l)

pub fn montgomery_mul(a: &Scalar52, b: &Scalar52) -> Scalar52

Compute (a * b) / R (mod l), where R is the Montgomery modulus 2^260

pub fn montgomery_square(&self) -> Scalar52

Compute (a^2) / R (mod l) in Montgomery form, where R is the Montgomery modulus 2^260

pub fn as_montgomery(&self) -> Scalar52

Puts a Scalar52 in to Montgomery form, i.e. computes a*R (mod l)

pub fn from_montgomery(&self) -> Scalar52

Takes a Scalar52 out of Montgomery form, i.e. computes a/R (mod l)

Trait Implementations

impl Clone for Scalar52

fn clone(&self) -> Scalar52

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Scalar52

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

Formats the value using the given formatter.

impl Index<usize> for Scalar52

type Output = u64

The returned type after indexing.

fn index(&self, _index: usize) -> &u64

Performs the indexing (container[index]) operation.

impl IndexMut<usize> for Scalar52

fn index_mut(&mut self, _index: usize) -> &mut u64

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

impl Zeroize for Scalar52

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 Scalar52

impl TrivialClone for Scalar52