Trait sp_core::Hasher

[+] Show declaration

pub trait Hasher: Send + Sync {
    type Out: MaybeDebug + Clone + PartialEq<Self::Out> + Eq + AsRef<[u8]> + AsMut<[u8]> + Default + Send + Copy + Sync + Hash;
    type StdHasher: Default + Send + Sync + Hasher;

    const LENGTH: usize;

    fn hash(x: &[u8]) -> Self::Out;
}

[−] Expand description

Trait describing an object that can hash a slice of bytes. Used to abstract other types over the hashing algorithm. Defines a single hash method and an Out associated type with the necessary bounds.

Associated Types

type Out: MaybeDebug + Clone + PartialEq<Self::Out> + Eq + AsRef<[u8]> + AsMut<[u8]> + Default + Send + Copy + Sync + Hash[−]

The output type of the Hasher

type StdHasher: Default + Send + Sync + Hasher[−]

What to use to build HashMaps with this Hasher.

Associated Constants

const LENGTH: usize[−]

The length in bytes of the Hasher output.

Required methods

fn hash(x: &[u8]) -> Self::Out[−]

Compute the hash of the provided slice of bytes returning the Out type of the Hasher.

Implementors

impl Hasher for Blake2Hasher[+]

[+] Show hidden undocumented items

type Out = H256

type StdHasher = Hash256StdHasher

const LENGTH: usize

fn hash(x: &[u8]) -> Self::Out

impl Hasher for KeccakHasher[+]

[+] Show hidden undocumented items

type Out = H256

type StdHasher = Hash256StdHasher

const LENGTH: usize

fn hash(x: &[u8]) -> Self::Out

impl Hasher for BlakeTwo256

impl Hasher for Keccak256