ark_r1cs_std::groups::curves::twisted_edwards

Struct MontgomeryAffineVar

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pub struct MontgomeryAffineVar<P: TECurveConfig, F: FieldVar<P::BaseField, <<P as CurveConfig>::BaseField as Field>::BasePrimeField>>
where for<'a> &'a F: FieldOpsBounds<'a, P::BaseField, F>,
{ pub x: F, pub y: F, /* private fields */ }
Expand description

An implementation of arithmetic for Montgomery curves that relies on incomplete addition formulae for the affine model, as outlined in the EFD.

This is intended for use primarily for implementing efficient multi-scalar-multiplication in the Bowe-Hopwood-Pedersen hash.

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§x: F

The x-coordinate.

§y: F

The y-coordinate.

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impl<P: TECurveConfig, F: FieldVar<P::BaseField, <<P as CurveConfig>::BaseField as Field>::BasePrimeField>> MontgomeryAffineVar<P, F>
where for<'a> &'a F: FieldOpsBounds<'a, P::BaseField, F>,

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pub fn new(x: F, y: F) -> Self

Constructs Self from an (x, y) coordinate pair.

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pub fn from_edwards_to_coords( p: &TEAffine<P>, ) -> Result<(P::BaseField, P::BaseField), SynthesisError>

Converts a Twisted Edwards curve point to coordinates for the corresponding affine Montgomery curve point.

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pub fn new_witness_from_edwards( cs: ConstraintSystemRef<<<P as CurveConfig>::BaseField as Field>::BasePrimeField>, p: &TEAffine<P>, ) -> Result<Self, SynthesisError>

Converts a Twisted Edwards curve point to coordinates for the corresponding affine Montgomery curve point.

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pub fn into_edwards(&self) -> Result<AffineVar<P, F>, SynthesisError>

Converts self into a Twisted Edwards curve point variable.

Trait Implementations§

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impl<'a, P, F> Add<&'a MontgomeryAffineVar<P, F>> for MontgomeryAffineVar<P, F>

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type Output = MontgomeryAffineVar<P, F>

The resulting type after applying the + operator.
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fn add(self, other: &'a Self) -> Self::Output

Performs the + operation. Read more
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impl<P: TECurveConfig, F> Clone for MontgomeryAffineVar<P, F>

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fn clone(&self) -> Self

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl<P: TECurveConfig, F> Debug for MontgomeryAffineVar<P, F>
where for<'a> &'a F: FieldOpsBounds<'a, P::BaseField, F>, F: Debug + FieldVar<P::BaseField, <<P as CurveConfig>::BaseField as Field>::BasePrimeField>,

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

Formats the value using the given formatter. Read more

Auto Trait Implementations§

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impl<P, F> Freeze for MontgomeryAffineVar<P, F>
where &'a F: for<'a> Sized, F: Freeze,

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impl<P, F> RefUnwindSafe for MontgomeryAffineVar<P, F>
where &'a F: for<'a> Sized, F: RefUnwindSafe, P: RefUnwindSafe,

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impl<P, F> Send for MontgomeryAffineVar<P, F>
where &'a F: for<'a> Sized, F: Send,

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impl<P, F> Sync for MontgomeryAffineVar<P, F>
where &'a F: for<'a> Sized, F: Sync,

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impl<P, F> Unpin for MontgomeryAffineVar<P, F>
where &'a F: for<'a> Sized, F: Unpin, P: Unpin,

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impl<P, F> UnwindSafe for MontgomeryAffineVar<P, F>
where &'a F: for<'a> Sized, F: UnwindSafe, P: UnwindSafe,

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dst: *mut T)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dst. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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impl<T> Same for T

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type Output = T

Should always be Self
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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<V, T> VZip<V> for T
where V: MultiLane<T>,

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fn vzip(self) -> V

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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
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fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more