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// This file is part of Substrate.
// Copyright (C) Parity Technologies (UK) Ltd.
// SPDX-License-Identifier: Apache-2.0
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//! Substrate Blake2b Hasher implementation
pub mod blake2 {
use crate::hash::H256;
use hash256_std_hasher::Hash256StdHasher;
use hash_db::Hasher;
/// Concrete implementation of Hasher using Blake2b 256-bit hashes
#[derive(Debug)]
pub struct Blake2Hasher;
impl Hasher for Blake2Hasher {
type Out = H256;
type StdHasher = Hash256StdHasher;
const LENGTH: usize = 32;
fn hash(x: &[u8]) -> Self::Out {
sp_crypto_hashing::blake2_256(x).into()
}
}
}
pub mod keccak {
use crate::hash::H256;
use hash256_std_hasher::Hash256StdHasher;
use hash_db::Hasher;
/// Concrete implementation of Hasher using Keccak 256-bit hashes
#[derive(Debug)]
pub struct KeccakHasher;
impl Hasher for KeccakHasher {
type Out = H256;
type StdHasher = Hash256StdHasher;
const LENGTH: usize = 32;
fn hash(x: &[u8]) -> Self::Out {
sp_crypto_hashing::keccak_256(x).into()
}
}
}