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https://github.com/Atmosphere-NX/Atmosphere-libs.git
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58 lines
2.6 KiB
C++
58 lines
2.6 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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#include <vapours.hpp>
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#include "crypto_update_impl.hpp"
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namespace ams::crypto::impl {
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size_t XtsModeImpl::UpdateGeneric(void *dst, size_t dst_size, const void *src, size_t src_size) {
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AMS_ASSERT(m_state == State_Initialized || m_state == State_Processing);
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return UpdateImpl<void>(this, dst, dst_size, src, src_size);
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}
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size_t XtsModeImpl::ProcessBlocksGeneric(u8 *dst, const u8 *src, size_t num_blocks) {
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size_t processed = BlockSize * (num_blocks - 1);
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if (m_state == State_Processing) {
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this->ProcessBlock(dst, m_last_block);
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dst += BlockSize;
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processed += BlockSize;
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}
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while ((--num_blocks) > 0) {
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this->ProcessBlock(dst, src);
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dst += BlockSize;
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src += BlockSize;
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}
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std::memcpy(m_last_block, src, BlockSize);
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m_state = State_Processing;
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return processed;
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}
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template<> size_t XtsModeImpl::Update<AesEncryptor128>(void *dst, size_t dst_size, const void *src, size_t src_size) { return this->UpdateGeneric(dst, dst_size, src, src_size); }
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template<> size_t XtsModeImpl::Update<AesEncryptor192>(void *dst, size_t dst_size, const void *src, size_t src_size) { return this->UpdateGeneric(dst, dst_size, src, src_size); }
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template<> size_t XtsModeImpl::Update<AesEncryptor256>(void *dst, size_t dst_size, const void *src, size_t src_size) { return this->UpdateGeneric(dst, dst_size, src, src_size); }
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template<> size_t XtsModeImpl::Update<AesDecryptor128>(void *dst, size_t dst_size, const void *src, size_t src_size) { return this->UpdateGeneric(dst, dst_size, src, src_size); }
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template<> size_t XtsModeImpl::Update<AesDecryptor192>(void *dst, size_t dst_size, const void *src, size_t src_size) { return this->UpdateGeneric(dst, dst_size, src, src_size); }
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template<> size_t XtsModeImpl::Update<AesDecryptor256>(void *dst, size_t dst_size, const void *src, size_t src_size) { return this->UpdateGeneric(dst, dst_size, src, src_size); }
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}
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