Trait Fp2Config

pub trait Fp2Config:
    Sized
    + 'static
    + Send
    + Sync {
    type Fp: PrimeField;

    const NONRESIDUE: Self::Fp;
    const FROBENIUS_COEFF_FP2_C1: &'static [Self::Fp];

    // Provided methods
    fn mul_fp_by_nonresidue_in_place(fe: &mut Self::Fp) -> &mut Self::Fp { ... }
    fn mul_fp_by_nonresidue_and_add(y: &mut Self::Fp, x: &Self::Fp) { ... }
    fn mul_fp_by_nonresidue_plus_one_and_add(y: &mut Self::Fp, x: &Self::Fp) { ... }
    fn sub_and_mul_fp_by_nonresidue(y: &mut Self::Fp, x: &Self::Fp) { ... }
}

Trait that specifies constants and methods for defining degree-two extension fields.

Required Associated Constants

const NONRESIDUE: Self::Fp

Quadratic non-residue in Self::Fp used to construct the extension field. That is, NONRESIDUE is such that the quadratic polynomial f(X) = X^2 - Self::NONRESIDUE in Fp[X] is irreducible in Self::Fp.

const FROBENIUS_COEFF_FP2_C1: &'static [Self::Fp]

Coefficients for the Frobenius automorphism.

Required Associated Types

type Fp: PrimeField

Base prime field underlying this extension.

Provided Methods

fn mul_fp_by_nonresidue_in_place(fe: &mut Self::Fp) -> &mut Self::Fp

Return fe * Self::NONRESIDUE. Intended for specialization when Self::NONRESIDUE has a special structure that can speed up multiplication

fn mul_fp_by_nonresidue_and_add(y: &mut Self::Fp, x: &Self::Fp)

A specializable method for setting y = x + NONRESIDUE * y. This allows for optimizations when the non-residue is canonically negative in the field.

fn mul_fp_by_nonresidue_plus_one_and_add(y: &mut Self::Fp, x: &Self::Fp)

A specializable method for computing x + mul_fp_by_nonresidue(y) + y This allows for optimizations when the non-residue is not -1.

fn sub_and_mul_fp_by_nonresidue(y: &mut Self::Fp, x: &Self::Fp)

A specializable method for computing x - mul_fp_by_nonresidue(y) This allows for optimizations when the non-residue is canonically negative in the field.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors