/*
 * 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.
 *
 * Copyright 2013 Danny Robson <danny@nerdcruft.net>
 */

#ifndef __UTIL_HASH_MD2_HPP
#define __UTIL_HASH_MD2_HPP

#include <array>
#include <cstdint>


///////////////////////////////////////////////////////////////////////////////
namespace util { namespace hash {
    class MD2 {
        public:
            typedef std::array<uint8_t,16> digest_t;

        public:
            MD2 ();

            void update (const uint8_t *restrict data, size_t len) noexcept;
            void update (const void    *restrict data, size_t len) noexcept;
            void update (const uint8_t *restrict first, const uint8_t *restrict last) noexcept;

            void finish (void);
            digest_t digest (void) const;
            void reset (void);

        private:
            void transform (void);

            uint64_t m_total;

            uint8_t C[16];
            uint8_t X[48];
    };
} }

#endif