Trait digest::ExtendableOutput

pub trait ExtendableOutput: Sized + Update {
    type Reader: XofReader;

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

    fn finalize_xof_into(self, out: &mut [u8]) { ... }
    fn digest_xof(input: impl AsRef<[u8]>, output: &mut [u8])
    where
        Self: Default,
    { ... }
    fn finalize_boxed(self, output_size: usize) -> Box<[u8]> { ... }
}

Trait for hash functions with extendable-output (XOF).

Required Associated Types

type Reader: XofReader

Reader

Required Methods

fn finalize_xof(self) -> Self::Reader

Retrieve XOF reader and consume hasher instance.

Provided Methods

fn finalize_xof_into(self, out: &mut [u8])

Finalize XOF and write result into out.

fn digest_xof(input: impl AsRef<[u8]>, output: &mut [u8]) where
    Self: Default, 

Compute hash of data and write it into output.

fn finalize_boxed(self, output_size: usize) -> Box<[u8]>

Retrieve result into a boxed slice of the specified size and consume the hasher.

Box<[u8]> is used instead of Vec<u8> to save stack space, since they have size of 2 and 3 words respectively.

Implementors

impl<T> ExtendableOutput for CoreWrapper<T> where
    T: ExtendableOutputCore,
    T::BlockSize: IsLess<U256>,
    Le<T::BlockSize, U256>: NonZero,
    <T::ReaderCore as BlockSizeUser>::BlockSize: IsLess<U256>,
    Le<<T::ReaderCore as BlockSizeUser>::BlockSize, U256>: NonZero, 

type Reader = XofReaderCoreWrapper<<T as ExtendableOutputCore>::ReaderCore>