suyu/src/core/file_sys/fssystem/fssystem_aes_xts_storage.h
SylverDiscord51 1648d189d3
license-fix (#31)
Co-authored-by: palfaiate <syl.paulo.alfaiate@gmail.com>
Co-authored-by: SylverDiscord51 <p71468162@gmail.com>
Co-committed-by: SylverDiscord51 <p71468162@gmail.com>
2024-03-23 22:58:07 -03:00

44 lines
1.2 KiB
C++

// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#pragma once
#include <mutex>
#include <optional>
#include "core/crypto/aes_util.h"
#include "core/crypto/key_manager.h"
#include "core/file_sys/fssystem/fs_i_storage.h"
namespace FileSys {
class AesXtsStorage : public IReadOnlyStorage {
SUYU_NON_COPYABLE(AesXtsStorage);
SUYU_NON_MOVEABLE(AesXtsStorage);
public:
static constexpr size_t AesBlockSize = 0x10;
static constexpr size_t KeySize = 0x20;
static constexpr size_t IvSize = 0x10;
public:
static void MakeAesXtsIv(void* dst, size_t dst_size, s64 offset, size_t block_size);
public:
AesXtsStorage(VirtualFile base, const void* key1, const void* key2, size_t key_size,
const void* iv, size_t iv_size, size_t block_size);
virtual size_t Read(u8* buffer, size_t size, size_t offset) const override;
virtual size_t GetSize() const override;
private:
VirtualFile m_base_storage;
std::array<u8, KeySize> m_key;
std::array<u8, IvSize> m_iv;
const size_t m_block_size;
std::mutex m_mutex;
mutable std::optional<Core::Crypto::AESCipher<Core::Crypto::Key256>> m_cipher;
};
} // namespace FileSys