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DigestXof

ark_vrf::utils::transcript

Struct DigestXof 

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pub struct DigestXof<H: Digest + Clone>(/* private fields */);
Expand description

Wraps any Digest hash into an ExtendableOutput function using counter-mode expansion.

seed = H(absorbed_data)
block_i = H(seed || i.to_le_bytes())    for i = 0, 1, 2, ...

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impl<H: Clone + Digest + Clone> Clone for DigestXof<H>

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fn clone(&self) -> DigestXof<H>

Returns a duplicate 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<H: Digest + Clone> Default for DigestXof<H>

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fn default() -> Self

Returns the “default value” for a type. Read more
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impl<H: Digest + Clone> ExtendableOutput for DigestXof<H>

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type Reader = DigestXofReader<H>

Reader
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fn finalize_xof(self) -> Self::Reader

Retrieve XOF reader and consume hasher instance.
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fn finalize_xof_into(self, out: &mut [u8])

Finalize XOF and write result into out.
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fn digest_xof(input: impl AsRef<[u8]>, output: &mut [u8])
where Self: Default,

Compute hash of data and write it into output.
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fn finalize_boxed(self, output_size: usize) -> Box<[u8]>

Retrieve result into a boxed slice of the specified size and consume the hasher. Read more
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impl<H: Digest + Clone> OutputSizeUser for DigestXof<H>

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type OutputSize = <H as OutputSizeUser>::OutputSize

Size of the output in bytes.
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fn output_size() -> usize

Return output size in bytes.
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impl<H: Digest + Clone> Update for DigestXof<H>

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fn update(&mut self, data: &[u8])

Update state using the provided data.
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fn chain(self, data: impl AsRef<[u8]>) -> Self
where Self: Sized,

Digest input data in a chained manner.

Auto Trait Implementations§

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impl<H> Freeze for DigestXof<H>
where H: Freeze,

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impl<H> RefUnwindSafe for DigestXof<H>
where H: RefUnwindSafe,

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impl<H> Send for DigestXof<H>
where H: Send,

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impl<H> Sync for DigestXof<H>
where H: Sync,

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impl<H> Unpin for DigestXof<H>
where H: Unpin,

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impl<H> UnsafeUnpin for DigestXof<H>
where H: UnsafeUnpin,

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impl<H> UnwindSafe for DigestXof<H>
where H: UnwindSafe,

Blanket Implementations§

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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, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. 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> 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