ark_ec::hashing::map_to_curve_hasher

Struct MapToCurveBasedHasher

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pub struct MapToCurveBasedHasher<T, H2F, M2C>
where
    T: CurveGroup,
    H2F: HashToField<T::BaseField>,
    M2C: MapToCurve<T>,
{ /* private fields */ }
Expand description

Helper struct that can be used to construct elements on the elliptic curve from arbitrary messages, by first hashing the message onto a field element and then mapping it to the elliptic curve defined over that field.

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impl<T, H2F, M2C> HashToCurve<T> for MapToCurveBasedHasher<T, H2F, M2C>
where T: CurveGroup, H2F: HashToField<T::BaseField>, M2C: MapToCurve<T>,

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fn hash(&self, msg: &[u8]) -> Result<T::Affine, HashToCurveError>

Produce a hash of the message, using the hash to field and map to curve traits. This uses the IETF hash to curve’s specification for Random oracle encoding (hash_to_curve) defined by combining these components. See https://tools.ietf.org/html/draft-irtf-cfrg-hash-to-curve-09#section-3

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fn new(domain: &[u8]) -> Result<Self, HashToCurveError>

Create a new hash to curve instance, with a given domain.

Auto Trait Implementations§

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impl<T, H2F, M2C> Freeze for MapToCurveBasedHasher<T, H2F, M2C>
where H2F: Freeze,

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impl<T, H2F, M2C> RefUnwindSafe for MapToCurveBasedHasher<T, H2F, M2C>
where H2F: RefUnwindSafe, T: RefUnwindSafe, M2C: RefUnwindSafe,

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impl<T, H2F, M2C> Send for MapToCurveBasedHasher<T, H2F, M2C>
where H2F: Send, M2C: Send,

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impl<T, H2F, M2C> Sync for MapToCurveBasedHasher<T, H2F, M2C>
where H2F: Sync, M2C: Sync,

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impl<T, H2F, M2C> Unpin for MapToCurveBasedHasher<T, H2F, M2C>
where H2F: Unpin, T: Unpin, M2C: Unpin,

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impl<T, H2F, M2C> UnwindSafe for MapToCurveBasedHasher<T, H2F, M2C>
where H2F: UnwindSafe, T: UnwindSafe, M2C: 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> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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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, 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