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https://github.com/Atmosphere-NX/Atmosphere-libs.git
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59 lines
2.4 KiB
C++
59 lines
2.4 KiB
C++
/*
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* Copyright (c) Atmosphère-NX
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include <vapours.hpp>
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#include <stratosphere/fs/fs_istorage.hpp>
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#include <stratosphere/fs/impl/fs_newable.hpp>
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#include <stratosphere/os.hpp>
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namespace ams::fssystem {
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/* ACCURATE_TO_VERSION: Unknown */
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template<typename BasePointer>
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class AesXtsStorage : public ::ams::fs::IStorage, public ::ams::fs::impl::Newable {
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NON_COPYABLE(AesXtsStorage);
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NON_MOVEABLE(AesXtsStorage);
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public:
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static constexpr size_t AesBlockSize = crypto::Aes128XtsEncryptor::BlockSize;
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static constexpr size_t KeySize = crypto::Aes128XtsEncryptor::KeySize;
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static constexpr size_t IvSize = crypto::Aes128XtsEncryptor::IvSize;
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private:
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BasePointer m_base_storage;
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char m_key[2][KeySize];
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char m_iv[IvSize];
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const size_t m_block_size;
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os::SdkMutex m_mutex;
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public:
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static void MakeAesXtsIv(void *dst, size_t dst_size, s64 offset, size_t block_size);
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public:
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AesXtsStorage(BasePointer base, const void *key1, const void *key2, size_t key_size, const void *iv, size_t iv_size, size_t block_size);
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virtual Result Read(s64 offset, void *buffer, size_t size) override;
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virtual Result Write(s64 offset, const void *buffer, size_t size) override;
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virtual Result Flush() override;
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virtual Result SetSize(s64 size) override;
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virtual Result GetSize(s64 *out) override;
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virtual Result OperateRange(void *dst, size_t dst_size, fs::OperationId op_id, s64 offset, s64 size, const void *src, size_t src_size) override;
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};
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using AesXtsStorageByPointer = AesXtsStorage<fs::IStorage *>;
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using AesXtsStorageBySharedPointer = AesXtsStorage<std::shared_ptr<fs::IStorage>>;
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}
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