Atmosphere/libraries/libvapours/include/vapours/crypto/impl/crypto_md5_impl.hpp

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/*
* Copyright (c) Atmosphère-NX
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope 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 this program. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#include <vapours/common.hpp>
#include <vapours/assert.hpp>
#include <vapours/util.hpp>
#include <vapours/crypto/impl/crypto_hash_function.hpp>
#include <vapours/crypto/crypto_memory_clear.hpp>
namespace ams::crypto::impl {
class Md5Impl {
public:
static constexpr size_t HashSize = 0x10;
static constexpr size_t BlockSize = 0x40;
private:
enum State {
State_None = 0,
State_Initialized = 1,
State_Done = 2,
};
private:
union {
struct {
u32 a, b, c, d;
} p;
u32 state[4];
} m_x;
alignas(8) u8 m_y[BlockSize];
size_t m_size;
State m_state;
public:
Md5Impl() : m_state(State_None) { /* ... */ }
~Md5Impl() { ClearMemory(this, sizeof(*this)); }
void Initialize();
void Update(const void *data, size_t size);
void GetHash(void *dst, size_t size);
private:
void ProcessBlock();
void ProcessLastBlock();
};
/* static_assert(HashFunction<Md5Impl>); */
}