mirror of
https://github.com/Atmosphere-NX/Atmosphere
synced 2024-12-27 15:11:16 +00:00
48 lines
1.3 KiB
C++
48 lines
1.3 KiB
C++
|
/*
|
||
|
|
* Copyright (c) 2018-2020 Atmosphère-NX
|
||
|
|
*
|
||
|
|
* 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 <stratosphere.hpp>
|
||
|
|
|
||
|
|
namespace ams::crypto {
|
||
|
|
|
||
|
|
namespace {
|
||
|
|
|
||
|
|
bool g_initialized;
|
||
|
|
os::Mutex g_lock(false);
|
||
|
|
|
||
|
|
void InitializeCsrng() {
|
||
|
|
AMS_ASSERT(!g_initialized);
|
||
|
|
sm::DoWithSession([&]() {
|
||
|
|
R_ABORT_UNLESS(::csrngInitialize());
|
||
|
|
});
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
void GenerateCryptographicallyRandomBytes(void *dst, size_t dst_size) {
|
||
|
|
{
|
||
|
|
std::scoped_lock lk(g_lock);
|
||
|
|
|
||
|
|
if (AMS_UNLIKELY(!g_initialized)) {
|
||
|
|
InitializeCsrng();
|
||
|
|
g_initialized = true;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
R_ABORT_UNLESS(csrngGetRandomBytes(dst, dst_size));
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|