Trait Hasher 

pub trait Hasher<H: CHasher>: Send + Sync {
    // Required methods
    fn leaf_digest(&mut self, pos: u64, element: &[u8]) -> H::Digest;
    fn node_digest(
        &mut self,
        pos: u64,
        left: &H::Digest,
        right: &H::Digest,
    ) -> H::Digest;
    fn root<'a>(
        &mut self,
        size: u64,
        peak_digests: impl Iterator<Item = &'a H::Digest>,
    ) -> H::Digest;
    fn digest(&mut self, data: &[u8]) -> H::Digest;
    fn inner(&mut self) -> &mut H;
    fn fork(&self) -> impl Hasher<H>;
}

A trait for computing the various digests of an MMR.

Required Methods

fn leaf_digest(&mut self, pos: u64, element: &[u8]) -> H::Digest

Computes the digest for a leaf given its position and the element it represents.

fn node_digest( &mut self, pos: u64, left: &H::Digest, right: &H::Digest, ) -> H::Digest

Computes the digest for a node given its position and the digests of its children.

fn root<'a>( &mut self, size: u64, peak_digests: impl Iterator<Item = &'a H::Digest>, ) -> H::Digest

Computes the root for an MMR given its size and an iterator over the digests of its peaks in decreasing order of height.

fn digest(&mut self, data: &[u8]) -> H::Digest

Compute the digest of a byte slice.

fn inner(&mut self) -> &mut H

Access the inner CHasher hasher.

fn fork(&self) -> impl Hasher<H>

Fork the hasher to provide equivalent functionality in another thread. This is different than Clone::clone because the forked hasher need not be a deep copy, and may share non-mutable state with the hasher from which it was forked.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors

impl<H: CHasher> Hasher<H> for Grafting<'_, H>

impl<H: CHasher> Hasher<H> for GraftingFork<'_, H>

impl<H: CHasher> Hasher<H> for GraftingVerifier<'_, H>

impl<H: CHasher> Hasher<H> for Standard<H>