Struct secp256k1::curve::Scalar

[+] Show declaration

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

[−] Expand description

A 256-bit scalar value.

Implementations

impl Scalar[−]

pub fn clear(&mut self)[−]

Clear a scalar to prevent the leak of sensitive data.

pub fn set_int(&mut self, v: u32)[−]

Set a scalar to an unsigned integer.

pub fn from_int(v: u32) -> Self[−]

Create a scalar from an unsigned integer.

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.

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

Access bits from a scalar. Not constant time.

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.

[+] Expand attributes

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

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

pub fn b32(&self) -> [u8; 32][−]

Convert a scalar to a byte array.

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

Convert a scalar to a byte array.

pub fn is_zero(&self) -> bool[−]

Check whether a scalar equals zero.

pub fn is_one(&self) -> bool[−]

Check whether a scalar equals one.

pub fn is_high(&self) -> bool[−]

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

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

Conditionally negate a number, in constant time.

impl Scalar[−]

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

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.

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[+]

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type Output = Scalar

The resulting type after applying the + operator.

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

Performs the + operation.

impl Add<Scalar> for Scalar[+]

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type Output = Scalar

The resulting type after applying the + operator.

fn add(self, other: Scalar) -> Scalar[−]

Performs the + operation.

impl<'a> AddAssign<&'a Scalar> for Scalar[+]

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

Performs the += operation.

impl AddAssign<Scalar> for Scalar[+]

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fn add_assign(&mut self, other: Scalar)[−]

Performs the += operation.

impl Clone for Scalar[+]

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fn clone(&self) -> Scalar[−]

Returns a copy of the value.

pub fn clone_from(&mut self, source: &Self)[−]

Performs copy-assignment from source.

impl Debug for Scalar[+]

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

Formats the value using the given formatter.

impl Default for Scalar[+]

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fn default() -> Scalar[−]

Returns the “default value” for a type.

impl Drop for Scalar[+]

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fn drop(&mut self)[−]

Executes the destructor for this type.

impl Eq for Scalar

impl Into<Scalar> for SecretKey[+]

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fn into(self) -> Scalar[−]

Performs the conversion.

impl LowerHex for Scalar[+]

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

Formats the value using the given formatter.

impl<'a, 'b> Mul<&'a Scalar> for &'b Scalar[+]

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type Output = Scalar

The resulting type after applying the * operator.

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

Performs the * operation.

impl Mul<Scalar> for Scalar[+]

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type Output = Scalar

The resulting type after applying the * operator.

fn mul(self, other: Scalar) -> Scalar[−]

Performs the * operation.

impl<'a> MulAssign<&'a Scalar> for Scalar[+]

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

Performs the *= operation.

impl MulAssign<Scalar> for Scalar[+]

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fn mul_assign(&mut self, other: Scalar)[−]

Performs the *= operation.

impl Neg for Scalar[+]

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type Output = Scalar

The resulting type after applying the - operator.

fn neg(self) -> Scalar[−]

Performs the unary - operation.

impl<'a> Neg for &'a Scalar[+]

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type Output = Scalar

The resulting type after applying the - operator.

fn neg(self) -> Scalar[−]

Performs the unary - operation.

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 ==.

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

This method tests for !=.

impl StructuralEq for Scalar

impl StructuralPartialEq for Scalar

impl TryFrom<Scalar> for SecretKey[+]

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type Error = Error

The type returned in the event of a conversion error.

fn try_from(scalar: Scalar) -> Result<Self, Error>[−]

Performs the conversion.