Trait Curve

pub trait Curve:
    Debug
    + Copy
    + Eq
    + Ord
    + Hash
    + Default
    + Sync
    + Send
    + 'static {
    type Point: Additive + From<CurveGenerator> + Zero + Zeroize + OnCurve + SmallFactor + Copy + Eq + ConstantTimeEq + ConditionallySelectable + Default + CompressedEncoding<Bytes = Self::CompressedPointArray> + UncompressedEncoding<Bytes = Self::UncompressedPointArray> + Decode + Unpin + Sync + Send;
    type Scalar: Additive + Multiplicative<Self::Scalar, Output = Self::Scalar, Output = Self::Point, Output = Self::Point> + Multiplicative<CurveGenerator> + Multiplicative<Self::Point> + Invertible + Zero + One + Samplable + Zeroize + Copy + Eq + ConstantTimeEq + ConditionallySelectable + Default + IntegerEncoding<Bytes = Self::ScalarArray> + Unpin + Sync + Send;
    type CompressedPointArray: ByteArray;
    type UncompressedPointArray: ByteArray;
    type ScalarArray: ByteArray;
    type CoordinateArray: ByteArray;

    const CURVE_NAME: &'static str;
}

Elliptic curve

This trait contains all the low-level curve implementation logic: scalar, point arithmetics, encoding and etc.

Required Associated Constants

const CURVE_NAME: &'static str

Curve name

Required Associated Types

type Point: Additive + From<CurveGenerator> + Zero + Zeroize + OnCurve + SmallFactor + Copy + Eq + ConstantTimeEq + ConditionallySelectable + Default + CompressedEncoding<Bytes = Self::CompressedPointArray> + UncompressedEncoding<Bytes = Self::UncompressedPointArray> + Decode + Unpin + Sync + Send

Type that represents a curve point

type Scalar: Additive + Multiplicative<Self::Scalar, Output = Self::Scalar, Output = Self::Point, Output = Self::Point> + Multiplicative<CurveGenerator> + Multiplicative<Self::Point> + Invertible + Zero + One + Samplable + Zeroize + Copy + Eq + ConstantTimeEq + ConditionallySelectable + Default + IntegerEncoding<Bytes = Self::ScalarArray> + Unpin + Sync + Send

Type that represents a curve scalar

type CompressedPointArray: ByteArray

Byte array that fits the whole bytes representation of compressed point

type UncompressedPointArray: ByteArray

Byte array that fits the whole bytes representation of uncompressed point

type ScalarArray: ByteArray

Byte array that fits the whole bytes representation of a scalar

type CoordinateArray: ByteArray

Byte array that fits the whole bytes representation of a coordinate

If a curve doesn’t expose point coordinates, it may be [u8; 0]

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.

Implementations on Foreign Types

impl<C, X> Curve for RustCryptoCurve<C, X>

where C: CurveName + CurveArithmetic, <C as CurveArithmetic>::ProjectivePoint: From<<C as CurveArithmetic>::AffinePoint> + CofactorGroup + Copy + Eq + Default + ConstantTimeEq + ConditionallySelectable + Zeroize + Unpin, <C as CurveArithmetic>::AffinePoint: From<<C as CurveArithmetic>::ProjectivePoint> + ToEncodedPoint<C> + FromEncodedPoint<C>, &'a <C as CurveArithmetic>::ProjectivePoint: for<'a> Mul<&'a <C as CurveArithmetic>::Scalar, Output = <C as CurveArithmetic>::ProjectivePoint>, <C as CurveArithmetic>::Scalar: Reduce<<C as Curve>::Uint> + Eq + ConstantTimeEq + ConditionallySelectable + DefaultIsZeroes + Unpin, RustCryptoScalar<C>: BytesModOrder, ScalarPrimitive<C>: for<'a> From<&'a <C as CurveArithmetic>::Scalar>, <C as Curve>::FieldBytesSize: ModulusSize, X: 'static,

const CURVE_NAME: &'static str = C::CURVE_NAME

type Point = RustCryptoPoint<C>

type Scalar = RustCryptoScalar<C>

type CompressedPointArray = <<RustCryptoCurve<C, X> as Curve>::Point as CompressedEncoding>::Bytes

type UncompressedPointArray = <<RustCryptoCurve<C, X> as Curve>::Point as UncompressedEncoding>::Bytes

type ScalarArray = <<RustCryptoCurve<C, X> as Curve>::Scalar as IntegerEncoding>::Bytes

type CoordinateArray = GenericArray<u8, <C as Curve>::FieldBytesSize>

Implementors

impl Curve for Ed25519

const CURVE_NAME: &'static str = "ed25519"

type Point = Point

type Scalar = Scalar

type CompressedPointArray = <Point as CompressedEncoding>::Bytes

type UncompressedPointArray = <Point as UncompressedEncoding>::Bytes

type ScalarArray = <Scalar as IntegerEncoding>::Bytes

type CoordinateArray = [u8; 0]