Struct ethers::core::k256::elliptic_curve::bigint::Checked

pub struct Checked<T>(pub CtOption<T>);

Provides intentionally-checked arithmetic on T.

Internally this leverages the CtOption type from the [subtle] crate in order to handle overflows in constant time.

Tuple Fields

0: CtOption<T>

Implementations

impl<T> Checked<T>

pub fn new(val: T) -> Checked<T>

Create a new checked arithmetic wrapper for the given value.

Methods from Deref<Target = CtOption<T>>

pub fn is_some(&self) -> Choice

Returns a true Choice if this value is Some.

pub fn is_none(&self) -> Choice

Returns a true Choice if this value is None.

Trait Implementations

impl<const LIMBS: usize> Add<Checked<UInt<LIMBS>>> for Checked<UInt<LIMBS>>

type Output = Checked<UInt<LIMBS>>

The resulting type after applying the + operator.

pub fn add(self, rhs: Checked<UInt<LIMBS>>) -> Checked<UInt<LIMBS>>

Performs the + operation.

impl<const LIMBS: usize> AddAssign<Checked<UInt<LIMBS>>> for Checked<UInt<LIMBS>>

pub fn add_assign(&mut self, other: Checked<UInt<LIMBS>>)

Performs the += operation.

impl<T> Clone for Checked<T> where
    T: Clone, 

pub fn clone(&self) -> Checked<T>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<T> ConditionallySelectable for Checked<T> where
    T: ConditionallySelectable, 

pub fn conditional_select(
    a: &Checked<T>,
    b: &Checked<T>,
    choice: Choice
) -> Checked<T>

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<T> ConstantTimeEq for Checked<T> where
    T: ConstantTimeEq, 

pub fn ct_eq(&self, rhs: &Checked<T>) -> Choice

Determine if two items are equal.

impl<T> Debug for Checked<T> where
    T: Debug, 

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

Formats the value using the given formatter.

impl<T> Default for Checked<T> where
    T: Default, 

pub fn default() -> Checked<T>

Returns the “default value” for a type.

impl<T> Deref for Checked<T>

type Target = CtOption<T>

The resulting type after dereferencing.

pub fn deref(&self) -> &CtOption<T>

Dereferences the value.

impl<const LIMBS: usize> Mul<Checked<UInt<LIMBS>>> for Checked<UInt<LIMBS>>

type Output = Checked<UInt<LIMBS>>

The resulting type after applying the * operator.

pub fn mul(self, rhs: Checked<UInt<LIMBS>>) -> Checked<UInt<LIMBS>>

Performs the * operation.

impl<const LIMBS: usize> MulAssign<Checked<UInt<LIMBS>>> for Checked<UInt<LIMBS>>

pub fn mul_assign(&mut self, other: Checked<UInt<LIMBS>>)

Performs the *= operation.

impl<const LIMBS: usize> Sub<Checked<UInt<LIMBS>>> for Checked<UInt<LIMBS>>

type Output = Checked<UInt<LIMBS>>

The resulting type after applying the - operator.

pub fn sub(self, rhs: Checked<UInt<LIMBS>>) -> Checked<UInt<LIMBS>>

Performs the - operation.

impl<const LIMBS: usize> SubAssign<Checked<UInt<LIMBS>>> for Checked<UInt<LIMBS>>

pub fn sub_assign(&mut self, other: Checked<UInt<LIMBS>>)

Performs the -= operation.

impl<T> Copy for Checked<T> where
    T: Copy,