Trait frame_support::StorageHasher

pub trait StorageHasher: 'static {
    type Output: AsRef<[u8]>;

    const METADATA: StorageHasher;

    fn hash(x: &[u8]) -> Self::Output;
    fn max_len<K: MaxEncodedLen>() -> usize;
}

Hasher to use to hash keys to insert to storage.

Associated Types

type Output: AsRef<[u8]>

Associated Constants

const METADATA: StorageHasher

Required methods

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

fn max_len<K: MaxEncodedLen>() -> usize

The max length of the final hash, for the given key type.

Implementors

impl StorageHasher for Blake2_128

const METADATA: StorageHasher

type Output = [u8; 16]

impl StorageHasher for Blake2_128Concat

const METADATA: StorageHasher

type Output = Vec<u8>

impl StorageHasher for Blake2_256

const METADATA: StorageHasher

type Output = [u8; 32]

impl StorageHasher for Identity

const METADATA: StorageHasher

type Output = Vec<u8>

impl StorageHasher for Twox64Concat

const METADATA: StorageHasher

type Output = Vec<u8>

impl StorageHasher for Twox128

const METADATA: StorageHasher

type Output = [u8; 16]

impl StorageHasher for Twox256

const METADATA: StorageHasher

type Output = [u8; 32]