Struct BivarCommitment 

pub struct BivarCommitment { /* private fields */ }

A commitment to a symmetric bivariate polynomial.

This commitment allows verification of values from a BivarPoly without revealing the polynomial itself. It is used in distributed key generation to publicly verify shares.

Example

use threshold_pairing::poly::BivarPoly;

let mut rng = rand::thread_rng();
let bi_poly = BivarPoly::random(2, &mut rng);
let commitment = bi_poly.commitment();

// The commitment has the same degree as the polynomial
assert_eq!(bi_poly.degree(), commitment.degree());

// Extract a row commitment
let row_commit = commitment.row(1u64);

Implementations

impl BivarCommitment

pub fn degree(&self) -> usize

Returns the polynomial’s degree: It is the same in both variables.

pub fn evaluate<T: IntoScalar>(&self, x: T, y: T) -> G1Projective

Returns the commitment’s value at the point (x, y).

pub fn row<T: IntoScalar>(&self, x: T) -> Commitment

Returns the x-th row, as a commitment to a univariate polynomial.

Trait Implementations

impl Clone for BivarCommitment

fn clone(&self) -> BivarCommitment

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for BivarCommitment

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for BivarCommitment

fn deserialize<D: Deserializer<'de>>(d: D) -> Result<Self, D::Error>

Deserialize this value from the given Serde deserializer.

impl Hash for BivarCommitment

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 Ord for BivarCommitment

fn cmp(&self, other: &Self) -> Ordering

This method returns an Ordering between self and other.

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

where Self: Sized,

Compares and returns the maximum of two values.

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

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for BivarCommitment

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

Tests for self and other values to be equal, and is used by ==.

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

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

impl PartialOrd for BivarCommitment

fn partial_cmp(&self, other: &Self) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Serialize for BivarCommitment

fn serialize<S: Serializer>(&self, s: S) -> Result<S::Ok, S::Error>

Serialize this value into the given Serde serializer.

impl Eq for BivarCommitment

impl StructuralPartialEq for BivarCommitment