Struct p256k1::scalar::Scalar

pub struct Scalar {
    pub scalar: secp256k1_scalar,
}

Scalar is a wrapper around libsecp256k1’s internal secp256k1_scalar struct. It provides a scalar modulo the group order. Storing scalars in this format avoids unnecessary conversions from byte bffers, which provides a significant performance enhancement.

Fields

scalar: secp256k1_scalar

The wrapped libsecp256k1 scalar

Implementations

impl Scalar

pub fn new() -> Self

Construct a zero scalar

pub fn random<T: RngCore + CryptoRng>(rng: &mut T) -> Self

Construct a random scalar

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

Set the scalar to the passed integer

pub fn invert(&self) -> Scalar

Return the multiplicative inverse of this scalar

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

Return a byte array of the scalar’s data in big endian

pub fn square_and_multiply(x: &Scalar, n: &Scalar) -> Scalar

Fast exponentiation using the square and multiply algorithm

pub fn square_and_multiply_usize(x: &Scalar, n: usize) -> Scalar

Fast exponentiation using the square and multiply algorithm

pub fn square_and_multiply_u32(x: &Scalar, n: u32) -> Scalar

Fast exponentiation using the square and multiply algorithm

Trait Implementations

impl Add<&Scalar> for &Scalar

type Output = Scalar

The resulting type after applying the + operator.

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

Performs the + operation.

impl Add<&Scalar> for Scalar

type Output = Scalar

The resulting type after applying the + operator.

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

Performs the + operation.

impl Add<Scalar> for &Scalar

type Output = Scalar

The resulting type after applying the + operator.

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

Performs the + operation.

impl Add<Scalar> for Scalar

type Output = Scalar

The resulting type after applying the + operator.

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

Performs the + operation.

impl AddAssign<&Scalar> for Scalar

fn add_assign(&mut self, rhs: &Scalar)

Performs the += operation.

impl AddAssign<Scalar> for Scalar

fn add_assign(&mut self, rhs: Scalar)

Performs the += operation.

impl BitXor<&Scalar> for &Scalar

type Output = Scalar

The resulting type after applying the ^ operator.

fn bitxor(self, rhs: &Scalar) -> Self::Output

Performs the ^ operation.

impl BitXor<&Scalar> for Scalar

type Output = Scalar

The resulting type after applying the ^ operator.

fn bitxor(self, rhs: &Scalar) -> Self::Output

Performs the ^ operation.

impl BitXor<Scalar> for &Scalar

type Output = Scalar

The resulting type after applying the ^ operator.

fn bitxor(self, rhs: Scalar) -> Self::Output

Performs the ^ operation.

impl BitXor<Scalar> for Scalar

type Output = Scalar

The resulting type after applying the ^ operator.

fn bitxor(self, rhs: Scalar) -> Self::Output

Performs the ^ operation.

impl BitXor<u32> for &Scalar

type Output = Scalar

The resulting type after applying the ^ operator.

fn bitxor(self, rhs: u32) -> Self::Output

Performs the ^ operation.

impl BitXor<u32> for Scalar

type Output = Scalar

The resulting type after applying the ^ operator.

fn bitxor(self, rhs: u32) -> Self::Output

Performs the ^ operation.

impl BitXor<usize> for &Scalar

type Output = Scalar

The resulting type after applying the ^ operator.

fn bitxor(self, rhs: usize) -> Self::Output

Performs the ^ operation.

impl BitXor<usize> for Scalar

type Output = Scalar

The resulting type after applying the ^ operator.

fn bitxor(self, rhs: usize) -> Self::Output

Performs the ^ operation.

impl Clone for Scalar

fn clone(&self) -> Scalar

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Scalar

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

Formats the value using the given formatter.

impl Default for Scalar

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for Scalar

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>where
    __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for Scalar

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

Formats the value using the given formatter.

impl Div<&Scalar> for &Scalar

type Output = Scalar

The resulting type after applying the / operator.

fn div(self, q: &Scalar) -> Self::Output

Performs the / operation.

impl Div<&Scalar> for Scalar

type Output = Scalar

The resulting type after applying the / operator.

fn div(self, q: &Scalar) -> Self::Output

Performs the / operation.

impl Div<Scalar> for &Scalar

type Output = Scalar

The resulting type after applying the / operator.

fn div(self, q: Scalar) -> Self::Output

Performs the / operation.

impl Div<Scalar> for Scalar

type Output = Scalar

The resulting type after applying the / operator.

fn div(self, q: Scalar) -> Self::Output

Performs the / operation.

impl DivAssign<&Scalar> for Scalar

fn div_assign(&mut self, q: &Scalar)

Performs the /= operation.

impl DivAssign<Scalar> for Scalar

fn div_assign(&mut self, q: Scalar)

Performs the /= operation.

impl From<&Scalar> for Point

fn from(x: &Scalar) -> Self

Converts to this type from the input type.

impl From<[u8; 32]> for Scalar

fn from(bytes: [u8; 32]) -> Self

Converts to this type from the input type.

impl From<Scalar> for Point

fn from(x: Scalar) -> Self

Converts to this type from the input type.

impl From<Scalar> for String

fn from(s: Scalar) -> String

Converts to this type from the input type.

impl From<u32> for Scalar

fn from(i: u32) -> Self

Converts to this type from the input type.

impl Hash for Scalar

fn hash<H: Hasher>(&self, state: &mut H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)where
    H: Hasher,
    Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Mul<&Point> for &Scalar

type Output = Point

The resulting type after applying the * operator.

fn mul(self, p: &Point) -> Self::Output

Performs the * operation.

impl Mul<&Point> for Scalar

type Output = Point

The resulting type after applying the * operator.

fn mul(self, p: &Point) -> Self::Output

Performs the * operation.

impl Mul<&Scalar> for &Point

type Output = Point

The resulting type after applying the * operator.

fn mul(self, x: &Scalar) -> Point

Performs the * operation.

impl Mul<&Scalar> for &Scalar

type Output = Scalar

The resulting type after applying the * operator.

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

Performs the * operation.

impl Mul<&Scalar> for Scalar

type Output = Scalar

The resulting type after applying the * operator.

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

Performs the * operation.

impl Mul<Point> for &Scalar

type Output = Point

The resulting type after applying the * operator.

fn mul(self, p: Point) -> Self::Output

Performs the * operation.

impl Mul<Point> for Scalar

type Output = Point

The resulting type after applying the * operator.

fn mul(self, p: Point) -> Self::Output

Performs the * operation.

impl Mul<Scalar> for &Scalar

type Output = Scalar

The resulting type after applying the * operator.

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

Performs the * operation.

impl Mul<Scalar> for Point

type Output = Point

The resulting type after applying the * operator.

fn mul(self, x: Scalar) -> Self

Performs the * operation.

impl Mul<Scalar> for Scalar

type Output = Scalar

The resulting type after applying the * operator.

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

Performs the * operation.

impl MulAssign<&Scalar> for Scalar

fn mul_assign(&mut self, rhs: &Scalar)

Performs the *= operation.

impl MulAssign<Scalar> for Scalar

fn mul_assign(&mut self, rhs: Scalar)

Performs the *= operation.

impl Neg for &Scalar

type Output = Scalar

The resulting type after applying the - operator.

fn neg(self) -> Self::Output

Performs the unary - operation.

impl Neg for Scalar

type Output = Scalar

The resulting type after applying the - operator.

fn neg(self) -> Self::Output

Performs the unary - operation.

impl One for Scalar

fn one() -> Self

Returns the multiplicative identity element of Self, 1.

fn is_one(&self) -> bool

Returns true if self is equal to the multiplicative identity.

fn set_one(&mut self)

Sets self to the multiplicative identity element of Self, 1.

impl PartialEq<Scalar> for Scalar

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

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

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

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for Scalar

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>where
    __S: Serializer,

Serialize this value into the given Serde serializer.

impl Sub<&Scalar> for &Scalar

type Output = Scalar

The resulting type after applying the - operator.

fn sub(self, other: &Scalar) -> Scalar

Performs the - operation.

impl Sub<Scalar> for Scalar

type Output = Scalar

The resulting type after applying the - operator.

fn sub(self, other: Self) -> Self

Performs the - operation.

impl TryFrom<&[u8]> for Scalar

type Error = Error

The type returned in the event of a conversion error.

fn try_from(bytes: &[u8]) -> Result<Self, Error>

Performs the conversion.

impl TryFrom<&str> for Scalar

type Error = Error

The type returned in the event of a conversion error.

fn try_from(s: &str) -> Result<Self, Error>

Performs the conversion.

impl Zero for Scalar

fn zero() -> Self

Returns the additive identity element of Self, 0.

fn is_zero(&self) -> bool

Returns true if self is equal to the additive identity.

fn set_zero(&mut self)

Sets self to the additive identity element of Self, 0.

impl Copy for Scalar

impl Eq for Scalar