Trait Hasher

pub trait Hasher
where
    Self: Clone + Debug + Default,
{
    type Hash: Copy + AsRef<[u8]> + BorshSerialize + BorshDeserialize + Debug + Default + Eq + Hash + PartialOrd + PartialEq + Serialize + for<'a> Deserialize<'a>;

    // Required method
    fn hashv(data: &[impl AsRef<[u8]>]) -> Self::Hash;
}

We provide Hasher as a small hashing abstraction.

This trait allows us to use a more abstract idea of hashing than the Digest trait from the digest create provides. In particular, if we want to use none cryptographic hashes or hashes that fit the mathematical definition of a hash, we can do this with this far more general abstraction.

Required Associated Types

type Hash: Copy + AsRef<[u8]> + BorshSerialize + BorshDeserialize + Debug + Default + Eq + Hash + PartialOrd + PartialEq + Serialize + for<'a> Deserialize<'a>

Required Methods

fn hashv(data: &[impl AsRef<[u8]>]) -> Self::Hash

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 Hasher for Keccak256

type Hash = [u8; 32]

impl Hasher for Keccak160

type Hash = [u8; 20]

impl Hasher for PrimeHasher

type Hash = [u8; 16]