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Add Engine associated type to CurveProject/CurveAffine.

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This commit is contained in:
Sean Bowe 2017-07-30 00:54:23 -06:00
parent 40ec989184
commit 053698eefb
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GPG Key ID: 95684257D8F8B031
2 changed files with 11 additions and 7 deletions
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6
src/bls12_381/ec.rs
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@ -108,6 +108,7 @@ macro_rules! curve_impl {
} }
impl CurveAffine for $affine { impl CurveAffine for $affine {
type Engine = Bls12;
type Scalar = $scalarfield; type Scalar = $scalarfield;
type Base = $basefield; type Base = $basefield;
type Prepared = $prepared; type Prepared = $prepared;
@ -174,6 +175,7 @@ macro_rules! curve_impl {
} }
impl CurveProjective for $projective { impl CurveProjective for $projective {
type Engine = Bls12;
type Scalar = $scalarfield; type Scalar = $scalarfield;
type Base = $basefield; type Base = $basefield;
type Affine = $affine; type Affine = $affine;
@ -582,7 +584,7 @@ macro_rules! curve_impl {
pub mod g1 { pub mod g1 {
use rand::{Rand, Rng}; use rand::{Rand, Rng};
use super::g2::G2Affine; use super::g2::G2Affine;
use super::super::{Fq, Fr, FrRepr, FqRepr, Fq12}; use super::super::{Bls12, Fq, Fr, FrRepr, FqRepr, Fq12};
use ::{CurveProjective, CurveAffine, PrimeField, SqrtField, PrimeFieldRepr, Field, BitIterator, EncodedPoint, GroupDecodingError, Engine}; use ::{CurveProjective, CurveAffine, PrimeField, SqrtField, PrimeFieldRepr, Field, BitIterator, EncodedPoint, GroupDecodingError, Engine};
curve_impl!("G1", G1, G1Affine, G1Prepared, Fq, Fr, G1Uncompressed, G1Compressed, G2Affine); curve_impl!("G1", G1, G1Affine, G1Prepared, Fq, Fr, G1Uncompressed, G1Compressed, G2Affine);
@ -1134,7 +1136,7 @@ pub mod g1 {
pub mod g2 { pub mod g2 {
use rand::{Rand, Rng}; use rand::{Rand, Rng};
use super::super::{Fq2, Fr, Fq, FrRepr, FqRepr, Fq12}; use super::super::{Bls12, Fq2, Fr, Fq, FrRepr, FqRepr, Fq12};
use super::g1::G1Affine; use super::g1::G1Affine;
use ::{CurveProjective, CurveAffine, PrimeField, SqrtField, PrimeFieldRepr, Field, BitIterator, EncodedPoint, GroupDecodingError, Engine}; use ::{CurveProjective, CurveAffine, PrimeField, SqrtField, PrimeFieldRepr, Field, BitIterator, EncodedPoint, GroupDecodingError, Engine};

12
src/lib.rs
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@ -34,21 +34,21 @@ use std::io::{self, Read, Write};
/// An "engine" is a collection of types (fields, elliptic curve groups, etc.) /// An "engine" is a collection of types (fields, elliptic curve groups, etc.)
/// with well-defined relationships. In particular, the G1/G2 curve groups are /// with well-defined relationships. In particular, the G1/G2 curve groups are
/// of prime order `r`, and are equipped with a bilinear pairing function. /// of prime order `r`, and are equipped with a bilinear pairing function.
pub trait Engine { pub trait Engine: Sized {
/// This is the scalar field of the G1/G2 groups. /// This is the scalar field of the G1/G2 groups.
type Fr: PrimeField; type Fr: PrimeField;
/// The projective representation of an element in G1. /// The projective representation of an element in G1.
type G1: CurveProjective<Base=Self::Fq, Scalar=Self::Fr, Affine=Self::G1Affine> + From<Self::G1Affine>; type G1: CurveProjective<Engine=Self, Base=Self::Fq, Scalar=Self::Fr, Affine=Self::G1Affine> + From<Self::G1Affine>;
/// The affine representation of an element in G1. /// The affine representation of an element in G1.
type G1Affine: CurveAffine<Base=Self::Fq, Scalar=Self::Fr, Projective=Self::G1, Pair=Self::G2Affine, PairingResult=Self::Fqk> + From<Self::G1>; type G1Affine: CurveAffine<Engine=Self, Base=Self::Fq, Scalar=Self::Fr, Projective=Self::G1, Pair=Self::G2Affine, PairingResult=Self::Fqk> + From<Self::G1>;
/// The projective representation of an element in G2. /// The projective representation of an element in G2.
type G2: CurveProjective<Base=Self::Fqe, Scalar=Self::Fr, Affine=Self::G2Affine> + From<Self::G2Affine>; type G2: CurveProjective<Engine=Self, Base=Self::Fqe, Scalar=Self::Fr, Affine=Self::G2Affine> + From<Self::G2Affine>;
/// The affine representation of an element in G2. /// The affine representation of an element in G2.
type G2Affine: CurveAffine<Base=Self::Fqe, Scalar=Self::Fr, Projective=Self::G2, Pair=Self::G1Affine, PairingResult=Self::Fqk> + From<Self::G2>; type G2Affine: CurveAffine<Engine=Self, Base=Self::Fqe, Scalar=Self::Fr, Projective=Self::G2, Pair=Self::G1Affine, PairingResult=Self::Fqk> + From<Self::G2>;
/// The base field that hosts G1. /// The base field that hosts G1.
type Fq: PrimeField + SqrtField; type Fq: PrimeField + SqrtField;
@ -97,6 +97,7 @@ pub trait CurveProjective: PartialEq +
rand::Rand + rand::Rand +
'static 'static
{ {
type Engine: Engine;
type Scalar: PrimeField; type Scalar: PrimeField;
type Base: SqrtField; type Base: SqrtField;
type Affine: CurveAffine<Projective=Self, Scalar=Self::Scalar>; type Affine: CurveAffine<Projective=Self, Scalar=Self::Scalar>;
@ -166,6 +167,7 @@ pub trait CurveAffine: Copy +
Eq + Eq +
'static 'static
{ {
type Engine: Engine;
type Scalar: PrimeField; type Scalar: PrimeField;
type Base: SqrtField; type Base: SqrtField;
type Projective: CurveProjective<Affine=Self, Scalar=Self::Scalar>; type Projective: CurveProjective<Affine=Self, Scalar=Self::Scalar>;