Atmosphere/libraries/libvapours/source/crypto/impl/crypto_sha256_impl.arch.arm64.cpp

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/*
* Copyright (c) Atmosphère-NX
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*
* 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/>.
*/
#include <vapours.hpp>
namespace ams::crypto::impl {
#ifdef ATMOSPHERE_IS_STRATOSPHERE
void Sha256Impl::Initialize() {
static_assert(sizeof(m_state) == sizeof(::Sha256Context));
::sha256ContextCreate(reinterpret_cast<::Sha256Context *>(std::addressof(m_state)));
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}
void Sha256Impl::Update(const void *data, size_t size) {
static_assert(sizeof(m_state) == sizeof(::Sha256Context));
::sha256ContextUpdate(reinterpret_cast<::Sha256Context *>(std::addressof(m_state)), data, size);
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}
void Sha256Impl::GetHash(void *dst, size_t size) {
static_assert(sizeof(m_state) == sizeof(::Sha256Context));
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AMS_ASSERT(size >= HashSize);
AMS_UNUSED(size);
::sha256ContextGetHash(reinterpret_cast<::Sha256Context *>(std::addressof(m_state)), dst);
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}
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void Sha256Impl::InitializeWithContext(const Sha256Context *context) {
static_assert(sizeof(m_state) == sizeof(::Sha256Context));
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/* Copy state in from the context. */
std::memcpy(m_state.intermediate_hash, context->intermediate_hash, sizeof(m_state.intermediate_hash));
m_state.bits_consumed = context->bits_consumed;
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/* Clear the rest of state. */
std::memset(m_state.buffer, 0, sizeof(m_state.buffer));
m_state.num_buffered = 0;
m_state.finalized = false;
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}
size_t Sha256Impl::GetContext(Sha256Context *context) const {
static_assert(sizeof(m_state) == sizeof(::Sha256Context));
std::memcpy(context->intermediate_hash, m_state.intermediate_hash, sizeof(context->intermediate_hash));
context->bits_consumed = m_state.bits_consumed;
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return m_state.num_buffered;
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}
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#else
/* TODO: Non-EL0 implementation. */
#endif
}