halo2_ecc::ecc

Struct EccChip

Source 
pub struct EccChip<'chip, F: BigPrimeField, FC: FieldChip<F>> {
    pub field_chip: &'chip FC,
    /* private fields */
}

Fields§

§field_chip: &'chip FC

Implementations§

Source§

impl<'chip, F: BigPrimeField, FC: FieldChip<F>> EccChip<'chip, F, FC>

Source

pub fn new(field_chip: &'chip FC) -> Self

Source

pub fn field_chip(&self) -> &FC

Source

pub fn load_private<C>( &self, ctx: &mut Context<F>, (x, y): (FC::FieldType, FC::FieldType), ) -> EcPoint<F, FC::FieldPoint>
where C: CurveAffineExt<Base = FC::FieldType>,

Load affine point as private witness. Constrains witness to lie on curve. Does not allow (0, 0) point,

Source

pub fn load_private_unchecked( &self, ctx: &mut Context<F>, (x, y): (FC::FieldType, FC::FieldType), ) -> EcPoint<F, FC::FieldPoint>

Does not constrain witness to lie on curve

Source

pub fn assign_point<C>( &self, ctx: &mut Context<F>, g: C, ) -> EcPoint<F, FC::FieldPoint>
where C: CurveAffineExt<Base = FC::FieldType>, C::Base: PrimeField,

Load affine point as private witness. Constrains witness to either lie on curve or be the point at infinity, represented in affine coordinates as (0, 0).

Source

pub fn assign_point_unchecked<C>( &self, ctx: &mut Context<F>, g: C, ) -> EcPoint<F, FC::FieldPoint>
where C: CurveAffineExt<Base = FC::FieldType>,

Does not constrain witness to lie on curve

Source

pub fn assign_constant_point<C>( &self, ctx: &mut Context<F>, g: C, ) -> EcPoint<F, FC::FieldPoint>
where C: CurveAffineExt<Base = FC::FieldType>,

Source

pub fn load_random_point<C>( &self, ctx: &mut Context<F>, ) -> EcPoint<F, FC::FieldPoint>
where C: CurveAffineExt<Base = FC::FieldType>,

Source

pub fn assert_is_on_curve<C>( &self, ctx: &mut Context<F>, P: &EcPoint<F, FC::FieldPoint>, )
where C: CurveAffine<Base = FC::FieldType>,

Source

pub fn is_on_curve_or_infinity<C>( &self, ctx: &mut Context<F>, P: &EcPoint<F, FC::FieldPoint>, ) -> AssignedValue<F>
where C: CurveAffine<Base = FC::FieldType>,

Source

pub fn negate( &self, ctx: &mut Context<F>, P: impl Into<EcPoint<F, FC::FieldPoint>>, ) -> EcPoint<F, FC::FieldPoint>

Source

pub fn add_unequal( &self, ctx: &mut Context<F>, P: impl Into<ComparableEcPoint<F, FC>>, Q: impl Into<ComparableEcPoint<F, FC>>, is_strict: bool, ) -> EcPoint<F, FC::FieldPoint>

Assumes that P.x != Q.x If is_strict == true, then actually constrains that P.x != Q.x

Source

pub fn sub_unequal( &self, ctx: &mut Context<F>, P: impl Into<ComparableEcPoint<F, FC>>, Q: impl Into<ComparableEcPoint<F, FC>>, is_strict: bool, ) -> EcPoint<F, FC::FieldPoint>

Assumes that P.x != Q.x Otherwise will panic

Source

pub fn double( &self, ctx: &mut Context<F>, P: impl Into<EcPoint<F, FC::FieldPoint>>, ) -> EcPoint<F, FC::FieldPoint>

Source

pub fn is_equal( &self, ctx: &mut Context<F>, P: EcPoint<F, FC::FieldPoint>, Q: EcPoint<F, FC::FieldPoint>, ) -> AssignedValue<F>

Source

pub fn assert_equal( &self, ctx: &mut Context<F>, P: EcPoint<F, FC::FieldPoint>, Q: EcPoint<F, FC::FieldPoint>, )

Source

pub fn sum<C>( &self, ctx: &mut Context<F>, points: impl IntoIterator<Item = EcPoint<F, FC::FieldPoint>>, ) -> EcPoint<F, FC::FieldPoint>
where C: CurveAffineExt<Base = FC::FieldType>,

None of elements in points can be point at infinity.

Source§

impl<'chip, F: BigPrimeField, FC> EccChip<'chip, F, FC>
where FC: Selectable<F, FC::FieldPoint> + FieldChip<F>,

Source

pub fn select( &self, ctx: &mut Context<F>, P: EcPoint<F, FC::FieldPoint>, Q: EcPoint<F, FC::FieldPoint>, condition: AssignedValue<F>, ) -> EcPoint<F, FC::FieldPoint>

Source

pub fn scalar_mult<C>( &self, ctx: &mut Context<F>, P: EcPoint<F, FC::FieldPoint>, scalar: Vec<AssignedValue<F>>, max_bits: usize, window_bits: usize, ) -> EcPoint<F, FC::FieldPoint>
where C: CurveAffineExt<Base = FC::FieldType>,

See scalar_multiply for more details.

Source

pub fn variable_base_msm<C>( &self, thread_pool: &mut SinglePhaseCoreManager<F>, P: &[EcPoint<F, FC::FieldPoint>], scalars: Vec<Vec<AssignedValue<F>>>, max_bits: usize, ) -> EcPoint<F, FC::FieldPoint>
where C: CurveAffineExt<Base = FC::FieldType>, FC: Selectable<F, FC::ReducedFieldPoint>,

See pippenger::multi_exp_par for more details.

Source

pub fn variable_base_msm_custom<C>( &self, builder: &mut SinglePhaseCoreManager<F>, P: &[EcPoint<F, FC::FieldPoint>], scalars: Vec<Vec<AssignedValue<F>>>, max_bits: usize, window_bits: usize, ) -> EcPoint<F, FC::FieldPoint>
where C: CurveAffineExt<Base = FC::FieldType>, FC: Selectable<F, FC::ReducedFieldPoint>,

Source§

impl<'chip, F: BigPrimeField, FC: FieldChip<F>> EccChip<'chip, F, FC>

Source

pub fn fixed_base_scalar_mult<C>( &self, ctx: &mut Context<F>, point: &C, scalar: Vec<AssignedValue<F>>, max_bits: usize, window_bits: usize, ) -> EcPoint<F, FC::FieldPoint>
where C: CurveAffineExt, FC: FieldChip<F, FieldType = C::Base> + Selectable<F, FC::FieldPoint>,

See fixed_base::scalar_multiply for more details.

Source

pub fn fixed_base_msm<C>( &self, builder: &mut SinglePhaseCoreManager<F>, points: &[C], scalars: Vec<Vec<AssignedValue<F>>>, max_scalar_bits_per_cell: usize, ) -> EcPoint<F, FC::FieldPoint>
where C: CurveAffineExt, FC: FieldChip<F, FieldType = C::Base> + Selectable<F, FC::FieldPoint>,

Source

pub fn fixed_base_msm_custom<C>( &self, builder: &mut SinglePhaseCoreManager<F>, points: &[C], scalars: Vec<Vec<AssignedValue<F>>>, max_scalar_bits_per_cell: usize, clump_factor: usize, ) -> EcPoint<F, FC::FieldPoint>
where C: CurveAffineExt, FC: FieldChip<F, FieldType = C::Base> + Selectable<F, FC::FieldPoint>,

clump_factor = 0 means auto-calculate

The user should filter out base points that are identity beforehand; we do not separately do this here

Trait Implementations§

Source§

impl<'chip, F: Clone + BigPrimeField, FC: Clone + FieldChip<F>> Clone for EccChip<'chip, F, FC>

Source§

fn clone(&self) -> EccChip<'chip, F, FC>

Returns a copy of the value. Read more
1.0.0 · Source§

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

Performs copy-assignment from source. Read more
Source§

impl<'chip, F: Debug + BigPrimeField, FC: Debug + FieldChip<F>> Debug for EccChip<'chip, F, FC>

Source§

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

Formats the value using the given formatter. Read more

Auto Trait Implementations§

§

impl<'chip, F, FC> Freeze for EccChip<'chip, F, FC>

§

impl<'chip, F, FC> RefUnwindSafe for EccChip<'chip, F, FC>
where FC: RefUnwindSafe, F: RefUnwindSafe,

§

impl<'chip, F, FC> Send for EccChip<'chip, F, FC>

§

impl<'chip, F, FC> Sync for EccChip<'chip, F, FC>

§

impl<'chip, F, FC> Unpin for EccChip<'chip, F, FC>
where F: Unpin,

§

impl<'chip, F, FC> UnwindSafe for EccChip<'chip, F, FC>
where FC: RefUnwindSafe, F: UnwindSafe,

Blanket Implementations§

Source§

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

Source§

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
Source§

impl<T> Borrow<T> for T
where T: ?Sized,

Source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
Source§

impl<T> BorrowMut<T> for T
where T: ?Sized,

Source§

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

Mutably borrows from an owned value. Read more
Source§

impl<T> CloneToUninit for T
where T: Clone,

Source§

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
Source§

impl<T> Conv for T

Source§

fn conv<T>(self) -> T
where Self: Into<T>,

Converts self into T using Into<T>. Read more
Source§

impl<T> FmtForward for T

Source§

fn fmt_binary(self) -> FmtBinary<Self>
where Self: Binary,

Causes self to use its Binary implementation when Debug-formatted.
Source§

fn fmt_display(self) -> FmtDisplay<Self>
where Self: Display,

Causes self to use its Display implementation when Debug-formatted.
Source§

fn fmt_lower_exp(self) -> FmtLowerExp<Self>
where Self: LowerExp,

Causes self to use its LowerExp implementation when Debug-formatted.
Source§

fn fmt_lower_hex(self) -> FmtLowerHex<Self>
where Self: LowerHex,

Causes self to use its LowerHex implementation when Debug-formatted.
Source§

fn fmt_octal(self) -> FmtOctal<Self>
where Self: Octal,

Causes self to use its Octal implementation when Debug-formatted.
Source§

fn fmt_pointer(self) -> FmtPointer<Self>
where Self: Pointer,

Causes self to use its Pointer implementation when Debug-formatted.
Source§

fn fmt_upper_exp(self) -> FmtUpperExp<Self>
where Self: UpperExp,

Causes self to use its UpperExp implementation when Debug-formatted.
Source§

fn fmt_upper_hex(self) -> FmtUpperHex<Self>
where Self: UpperHex,

Causes self to use its UpperHex implementation when Debug-formatted.
Source§

fn fmt_list(self) -> FmtList<Self>
where &'a Self: for<'a> IntoIterator,

Formats each item in a sequence. Read more
Source§

impl<T> From<T> for T

Source§

fn from(t: T) -> T

Returns the argument unchanged.

Source§

impl<T> Instrument for T

Source§

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

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
Source§

fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
Source§

impl<T, U> Into<U> for T
where U: From<T>,

Source§

fn into(self) -> U

Calls U::from(self).

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

Source§

impl<T> IntoEither for T

Source§

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
Source§

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
Source§

impl<T> Pipe for T
where T: ?Sized,

Source§

fn pipe<R>(self, func: impl FnOnce(Self) -> R) -> R
where Self: Sized,

Pipes by value. This is generally the method you want to use. Read more
Source§

fn pipe_ref<'a, R>(&'a self, func: impl FnOnce(&'a Self) -> R) -> R
where R: 'a,

Borrows self and passes that borrow into the pipe function. Read more
Source§

fn pipe_ref_mut<'a, R>(&'a mut self, func: impl FnOnce(&'a mut Self) -> R) -> R
where R: 'a,

Mutably borrows self and passes that borrow into the pipe function. Read more
Source§

fn pipe_borrow<'a, B, R>(&'a self, func: impl FnOnce(&'a B) -> R) -> R
where Self: Borrow<B>, B: 'a + ?Sized, R: 'a,

Borrows self, then passes self.borrow() into the pipe function. Read more
Source§

fn pipe_borrow_mut<'a, B, R>( &'a mut self, func: impl FnOnce(&'a mut B) -> R, ) -> R
where Self: BorrowMut<B>, B: 'a + ?Sized, R: 'a,

Mutably borrows self, then passes self.borrow_mut() into the pipe function. Read more
Source§

fn pipe_as_ref<'a, U, R>(&'a self, func: impl FnOnce(&'a U) -> R) -> R
where Self: AsRef<U>, U: 'a + ?Sized, R: 'a,

Borrows self, then passes self.as_ref() into the pipe function.
Source§

fn pipe_as_mut<'a, U, R>(&'a mut self, func: impl FnOnce(&'a mut U) -> R) -> R
where Self: AsMut<U>, U: 'a + ?Sized, R: 'a,

Mutably borrows self, then passes self.as_mut() into the pipe function.
Source§

fn pipe_deref<'a, T, R>(&'a self, func: impl FnOnce(&'a T) -> R) -> R
where Self: Deref<Target = T>, T: 'a + ?Sized, R: 'a,

Borrows self, then passes self.deref() into the pipe function.
Source§

fn pipe_deref_mut<'a, T, R>( &'a mut self, func: impl FnOnce(&'a mut T) -> R, ) -> R
where Self: DerefMut<Target = T> + Deref, T: 'a + ?Sized, R: 'a,

Mutably borrows self, then passes self.deref_mut() into the pipe function.
Source§

impl<T> Pointable for T

Source§

const ALIGN: usize = _

The alignment of pointer.
Source§

type Init = T

The type for initializers.
Source§

unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
Source§

unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
Source§

unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
Source§

unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
Source§

impl<T> Same for T

Source§

type Output = T

Should always be Self
Source§

impl<F, Fp, Pt, FC> Selectable<F, Reduced<Pt, Fp>> for FC
where F: BigPrimeField, Pt: Clone, FC: Selectable<F, Pt>,

Source§

fn select( &self, ctx: &mut Context<F>, a: Reduced<Pt, Fp>, b: Reduced<Pt, Fp>, sel: AssignedValue<F>, ) -> Reduced<Pt, Fp>

Source§

fn select_by_indicator( &self, ctx: &mut Context<F>, a: &impl AsRef<[Reduced<Pt, Fp>]>, coeffs: &[AssignedValue<F>], ) -> Reduced<Pt, Fp>

Source§

impl<T> Tap for T

Source§

fn tap(self, func: impl FnOnce(&Self)) -> Self

Immutable access to a value. Read more
Source§

fn tap_mut(self, func: impl FnOnce(&mut Self)) -> Self

Mutable access to a value. Read more
Source§

fn tap_borrow<B>(self, func: impl FnOnce(&B)) -> Self
where Self: Borrow<B>, B: ?Sized,

Immutable access to the Borrow<B> of a value. Read more
Source§

fn tap_borrow_mut<B>(self, func: impl FnOnce(&mut B)) -> Self
where Self: BorrowMut<B>, B: ?Sized,

Mutable access to the BorrowMut<B> of a value. Read more
Source§

fn tap_ref<R>(self, func: impl FnOnce(&R)) -> Self
where Self: AsRef<R>, R: ?Sized,

Immutable access to the AsRef<R> view of a value. Read more
Source§

fn tap_ref_mut<R>(self, func: impl FnOnce(&mut R)) -> Self
where Self: AsMut<R>, R: ?Sized,

Mutable access to the AsMut<R> view of a value. Read more
Source§

fn tap_deref<T>(self, func: impl FnOnce(&T)) -> Self
where Self: Deref<Target = T>, T: ?Sized,

Immutable access to the Deref::Target of a value. Read more
Source§

fn tap_deref_mut<T>(self, func: impl FnOnce(&mut T)) -> Self
where Self: DerefMut<Target = T> + Deref, T: ?Sized,

Mutable access to the Deref::Target of a value. Read more
Source§

fn tap_dbg(self, func: impl FnOnce(&Self)) -> Self

Calls .tap() only in debug builds, and is erased in release builds.
Source§

fn tap_mut_dbg(self, func: impl FnOnce(&mut Self)) -> Self

Calls .tap_mut() only in debug builds, and is erased in release builds.
Source§

fn tap_borrow_dbg<B>(self, func: impl FnOnce(&B)) -> Self
where Self: Borrow<B>, B: ?Sized,

Calls .tap_borrow() only in debug builds, and is erased in release builds.
Source§

fn tap_borrow_mut_dbg<B>(self, func: impl FnOnce(&mut B)) -> Self
where Self: BorrowMut<B>, B: ?Sized,

Calls .tap_borrow_mut() only in debug builds, and is erased in release builds.
Source§

fn tap_ref_dbg<R>(self, func: impl FnOnce(&R)) -> Self
where Self: AsRef<R>, R: ?Sized,

Calls .tap_ref() only in debug builds, and is erased in release builds.
Source§

fn tap_ref_mut_dbg<R>(self, func: impl FnOnce(&mut R)) -> Self
where Self: AsMut<R>, R: ?Sized,

Calls .tap_ref_mut() only in debug builds, and is erased in release builds.
Source§

fn tap_deref_dbg<T>(self, func: impl FnOnce(&T)) -> Self
where Self: Deref<Target = T>, T: ?Sized,

Calls .tap_deref() only in debug builds, and is erased in release builds.
Source§

fn tap_deref_mut_dbg<T>(self, func: impl FnOnce(&mut T)) -> Self
where Self: DerefMut<Target = T> + Deref, T: ?Sized,

Calls .tap_deref_mut() only in debug builds, and is erased in release builds.
Source§

impl<T> ToOwned for T
where T: Clone,

Source§

type Owned = T

The resulting type after obtaining ownership.
Source§

fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
Source§

fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
Source§

impl<T> TryConv for T

Source§

fn try_conv<T>(self) -> Result<T, Self::Error>
where Self: TryInto<T>,

Attempts to convert self into T using TryInto<T>. Read more
Source§

impl<T, U> TryFrom<U> for T
where U: Into<T>,

Source§

type Error = Infallible

The type returned in the event of a conversion error.
Source§

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
Source§

impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

Source§

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

The type returned in the event of a conversion error.
Source§

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
Source§

impl<V, T> VZip<V> for T
where V: MultiLane<T>,

Source§

fn vzip(self) -> V

Source§

impl<T> WithSubscriber for T

Source§

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
Source§

fn with_current_subscriber(self) -> WithDispatch<Self>

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

impl<T> SyncDeps for T