mirror of
https://github.com/Atmosphere-NX/Atmosphere-libs.git
synced 2025-06-21 19:12:42 +02:00
39 lines
1.5 KiB
C++
39 lines
1.5 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>
|
|
#include "os_rng_manager_impl.hpp"
|
|
|
|
namespace ams::os::impl {
|
|
|
|
void RngManager::Initialize() {
|
|
/* Retrieve entropy from kernel. */
|
|
u32 seed[4];
|
|
static_assert(util::size(seed) == util::TinyMT::NumStateWords);
|
|
|
|
/* Nintendo does not check the result of these invocations, but we will for safety. */
|
|
/* Nintendo uses entropy values 0, 1 to seed the public TinyMT random, and values */
|
|
/* 2, 3 to seed os::detail::RngManager's private TinyMT random. */
|
|
R_ABORT_UNLESS(svcGetInfo(reinterpret_cast<u64 *>(&seed[0]), InfoType_RandomEntropy, INVALID_HANDLE, 2));
|
|
R_ABORT_UNLESS(svcGetInfo(reinterpret_cast<u64 *>(&seed[2]), InfoType_RandomEntropy, INVALID_HANDLE, 3));
|
|
|
|
this->mt.Initialize(seed, util::size(seed));
|
|
|
|
/* Note that we've initialized. */
|
|
this->initialized = true;
|
|
}
|
|
|
|
}
|