openethereum/ethkey/src/keccak.rs

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// Copyright 2015-2017 Parity Technologies (UK) Ltd.
// This file is part of Parity.
// Parity is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// Parity is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with Parity. If not, see <http://www.gnu.org/licenses/>.
use tiny_keccak::Keccak;
pub trait Keccak256<T> {
fn keccak256(&self) -> T where T: Sized;
}
impl Keccak256<[u8; 32]> for [u8] {
fn keccak256(&self) -> [u8; 32] {
let mut keccak = Keccak::new_keccak256();
let mut result = [0u8; 32];
keccak.update(self);
keccak.finalize(&mut result);
result
}
}