diff options
Diffstat (limited to 'src/core/file_sys/fssystem/fssystem_aes_xts_storage.h')
-rw-r--r-- | src/core/file_sys/fssystem/fssystem_aes_xts_storage.h | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/src/core/file_sys/fssystem/fssystem_aes_xts_storage.h b/src/core/file_sys/fssystem/fssystem_aes_xts_storage.h new file mode 100644 index 000000000..f342efb57 --- /dev/null +++ b/src/core/file_sys/fssystem/fssystem_aes_xts_storage.h @@ -0,0 +1,42 @@ +// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project +// SPDX-License-Identifier: GPL-2.0-or-later + +#pragma once + +#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 { + YUZU_NON_COPYABLE(AesXtsStorage); + YUZU_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 |