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https://github.com/Atmosphere-NX/Atmosphere.git
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46 lines
1.3 KiB
C++
46 lines
1.3 KiB
C++
/*
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* Copyright (c) 2018-2020 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 <stratosphere.hpp>
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namespace ams::crypto {
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namespace {
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constinit bool g_initialized = false;
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constinit os::SdkMutex g_lock;
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void InitializeCsrng() {
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AMS_ASSERT(!g_initialized);
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R_ABORT_UNLESS(sm::Initialize());
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R_ABORT_UNLESS(::csrngInitialize());
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}
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}
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void GenerateCryptographicallyRandomBytes(void *dst, size_t dst_size) {
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if (AMS_UNLIKELY(!g_initialized)) {
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std::scoped_lock lk(g_lock);
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if (AMS_LIKELY(!g_initialized)) {
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InitializeCsrng();
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g_initialized = true;
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}
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}
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R_ABORT_UNLESS(::csrngGetRandomBytes(dst, dst_size));
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}
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}
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