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// Copyright 2012-2013 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.

pub trait Digest {
    fn input(&mut self, input: &[u8]);
    fn result(&mut self, out: &mut [u8]);
    fn reset(&mut self);
    fn output_bits(&self) -> usize;
    fn output_bytes(&self) -> usize {
        (self.output_bits() + 7) / 8
    }
    fn block_size(&self) -> usize;
}