Struct libsecp256k1_core::curve::Scalar

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pub struct Scalar(pub [u32; 8]);

Expand description

A 256-bit scalar value.

Tuple Fields

0: [u32; 8]

Implementations

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impl Scalar

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pub fn clear(&mut self)

Clear a scalar to prevent the leak of sensitive data.

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pub fn set_int(&mut self, v: u32)

Set a scalar to an unsigned integer.

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pub fn from_int(v: u32) -> Self

Create a scalar from an unsigned integer.

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pub fn bits(&self, offset: usize, count: usize) -> u32

Access bits from a scalar. All requested bits must belong to the same 32-bit limb.

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pub fn bits_var(&self, offset: usize, count: usize) -> u32

Access bits from a scalar. Not constant time.

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pub fn cadd_bit(&mut self, bit: usize, flag: bool)

Conditionally add a power of two to a scalar. The result is not allowed to overflow.

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pub fn set_b32(&mut self, b32: &[u8 ; 32]) -> Choice

Set a scalar from a big endian byte array, return whether it overflowed.

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pub fn b32(&self) -> [u8 ; 32]

Convert a scalar to a byte array.

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pub fn fill_b32(&self, bin: &mut [u8 ; 32])

Convert a scalar to a byte array.

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pub fn is_zero(&self) -> bool

Check whether a scalar equals zero.

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pub fn is_one(&self) -> bool

Check whether a scalar equals one.

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pub fn is_high(&self) -> bool

Check whether a scalar is higher than the group order divided by 2.

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pub fn cond_neg_assign(&mut self, flag: Choice)

Conditionally negate a number, in constant time.

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impl Scalar

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pub fn mul_in_place(&mut self, a: &Scalar, b: &Scalar)

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pub fn shr_int(&mut self, n: usize) -> u32

Shift a scalar right by some amount strictly between 0 and 16, returning the low bits that were shifted off.

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pub fn is_even(&self) -> bool

Trait Implementations

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impl<'a, 'b> Add<&'a Scalar> for &'b Scalar

type Output = Scalar

The resulting type after applying the + operator.

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fn add(self, other: &'a Scalar) -> Scalar

Performs the + operation. Read more

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impl Add<Scalar> for Scalar

type Output = Scalar

The resulting type after applying the + operator.

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fn add(self, other: Scalar) -> Scalar

Performs the + operation. Read more

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impl<'a> AddAssign<&'a Scalar> for Scalar

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fn add_assign(&mut self, other: &'a Scalar)

Performs the += operation. Read more

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impl AddAssign<Scalar> for Scalar

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fn add_assign(&mut self, other: Scalar)

Performs the += operation. Read more

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impl Clone for Scalar

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fn clone(&self) -> Scalar

Returns a copy of the value. Read more

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

Performs copy-assignment from source. Read more

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impl Debug for Scalar

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

Formats the value using the given formatter. Read more

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impl Default for Scalar

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fn default() -> Scalar

Returns the “default value” for a type. Read more

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impl LowerHex for Scalar

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

Formats the value using the given formatter.

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impl<'a, 'b> Mul<&'a Scalar> for &'b Scalar

type Output = Scalar

The resulting type after applying the * operator.

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fn mul(self, other: &'a Scalar) -> Scalar

Performs the * operation. Read more

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impl Mul<Scalar> for Scalar

type Output = Scalar

The resulting type after applying the * operator.

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fn mul(self, other: Scalar) -> Scalar

Performs the * operation. Read more

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impl<'a> MulAssign<&'a Scalar> for Scalar

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fn mul_assign(&mut self, other: &'a Scalar)

Performs the *= operation. Read more

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impl MulAssign<Scalar> for Scalar

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fn mul_assign(&mut self, other: Scalar)

Performs the *= operation. Read more

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impl Neg for Scalar

type Output = Scalar

The resulting type after applying the - operator.

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fn neg(self) -> Scalar

Performs the unary - operation. Read more

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impl<'a> Neg for &'a Scalar

type Output = Scalar

The resulting type after applying the - operator.

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fn neg(self) -> Scalar

Performs the unary - operation. Read more

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impl PartialEq<Scalar> for Scalar

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

This method tests for self and other values to be equal, and is used by ==. Read more

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

This method tests for !=.

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impl Copy for Scalar

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impl Eq for Scalar

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impl StructuralEq for Scalar

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impl StructuralPartialEq for Scalar

Auto Trait Implementations

impl RefUnwindSafe for Scalar

impl Send for Scalar

impl Sync for Scalar

impl Unpin for Scalar

impl UnwindSafe for Scalar

Blanket Implementations

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impl<T> Any for T where
T: 'static + ?Sized,

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pub fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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impl<T> Borrow<T> for T where
T: ?Sized,

const: unstable · source

pub fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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impl<T> BorrowMut<T> for T where
T: ?Sized,

const: unstable · source

pub fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

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impl<T> From<T> for T

const: unstable · source

pub fn from(t: T) -> T

Performs the conversion.

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impl<T, U> Into for T where
U: From<T>,

const: unstable · source

pub fn into(self) -> U

Performs the conversion.

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impl<T> Same<T> for T

type Output = T

Should always be Self

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

type Owned = T

The resulting type after obtaining ownership.

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pub fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more

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pub fn clone_into(&self, target: &mut T)

🔬 This is a nightly-only experimental API. (toowned_clone_into)

Uses borrowed data to replace owned data, usually by cloning. Read more

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impl<T, U> TryFrom for T where
U: Into<T>,

type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source

pub fn try_from(value: U) -> Result<T, <T as TryFrom>::Error>

Performs the conversion.

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impl<T, U> TryInto for T where
U: TryFrom<T>,

type Error = >::Error

The type returned in the event of a conversion error.

const: unstable · source

pub fn try_into(self) -> Result<U, >::Error>

Performs the conversion.

Struct libsecp256k1_core::curve::Scalar

Tuple Fields

Implementations

impl Scalar

pub fn clear(&mut self)

pub fn set_int(&mut self, v: u32)

pub fn from_int(v: u32) -> Self

pub fn bits(&self, offset: usize, count: usize) -> u32

pub fn bits_var(&self, offset: usize, count: usize) -> u32

pub fn cadd_bit(&mut self, bit: usize, flag: bool)

pub fn set_b32(&mut self, b32: &[u8; 32]) -> Choice

pub fn b32(&self) -> [u8; 32]

pub fn fill_b32(&self, bin: &mut [u8; 32])

pub fn is_zero(&self) -> bool

pub fn is_one(&self) -> bool

pub fn is_high(&self) -> bool

pub fn cond_neg_assign(&mut self, flag: Choice)

impl Scalar

pub fn mul_in_place(&mut self, a: &Scalar, b: &Scalar)

pub fn shr_int(&mut self, n: usize) -> u32

pub fn sqr_in_place(&mut self, a: &Scalar)

pub fn sqr(&self) -> Scalar

pub fn inv_in_place(&mut self, x: &Scalar)

pub fn inv(&self) -> Scalar

pub fn inv_var(&self) -> Scalar

pub fn is_even(&self) -> bool

Trait Implementations

impl<'a, 'b> Add<&'a Scalar> for &'b Scalar

type Output = Scalar

fn add(self, other: &'a Scalar) -> Scalar

impl Add<Scalar> for Scalar

type Output = Scalar

fn add(self, other: Scalar) -> Scalar

impl<'a> AddAssign<&'a Scalar> for Scalar

fn add_assign(&mut self, other: &'a Scalar)

impl AddAssign<Scalar> for Scalar

fn add_assign(&mut self, other: Scalar)

impl Clone for Scalar

fn clone(&self) -> Scalar

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

impl Debug for Scalar

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

impl Default for Scalar

fn default() -> Scalar

impl LowerHex for Scalar

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

impl<'a, 'b> Mul<&'a Scalar> for &'b Scalar

type Output = Scalar

fn mul(self, other: &'a Scalar) -> Scalar

impl Mul<Scalar> for Scalar

type Output = Scalar

fn mul(self, other: Scalar) -> Scalar

impl<'a> MulAssign<&'a Scalar> for Scalar

fn mul_assign(&mut self, other: &'a Scalar)

impl MulAssign<Scalar> for Scalar

fn mul_assign(&mut self, other: Scalar)

impl Neg for Scalar

type Output = Scalar

fn neg(self) -> Scalar

impl<'a> Neg for &'a Scalar

type Output = Scalar

fn neg(self) -> Scalar

impl PartialEq<Scalar> for Scalar

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

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

impl Copy for Scalar

impl Eq for Scalar

impl StructuralEq for Scalar

impl StructuralPartialEq for Scalar

Auto Trait Implementations

impl RefUnwindSafe for Scalar

impl Send for Scalar

impl Sync for Scalar

impl Unpin for Scalar

impl UnwindSafe for Scalar

Blanket Implementations

impl<T> Any for T where T: 'static + ?Sized,

pub fn type_id(&self) -> TypeId

impl<T> Borrow<T> for T where T: ?Sized,

pub fn borrow(&self) -> &T

pub fn set_b32(&mut self, b32: &[u8 ; 32]) -> Choice

pub fn b32(&self) -> [u8 ; 32]

pub fn fill_b32(&self, bin: &mut [u8 ; 32])

impl<T> Any for T where
T: 'static + ?Sized,

impl<T> Borrow<T> for T where
T: ?Sized,

impl<T> BorrowMut<T> for T where
T: ?Sized,

impl<T, U> Into<U> for T where
U: From<T>,

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

impl<T, U> TryFrom<U> for T where
U: Into<T>,

impl<T, U> TryInto<U> for T where
U: TryFrom<T>,