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Merge pull request #1679 from DarkLordZach/deterministic-rng-2
svc: Use proper random entropy generation algorithm
This commit is contained in:
commit
e1ea8cc721
6 changed files with 33 additions and 8 deletions
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@ -15,6 +15,7 @@
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#include "core/hle/kernel/thread.h"
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#include "core/hle/kernel/vm_manager.h"
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#include "core/memory.h"
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#include "core/settings.h"
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namespace Kernel {
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@ -33,6 +34,11 @@ SharedPtr<Process> Process::Create(KernelCore& kernel, std::string&& name) {
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process->process_id = kernel.CreateNewProcessID();
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process->svc_access_mask.set();
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std::mt19937 rng(Settings::values.rng_seed.value_or(0));
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std::uniform_int_distribution<u64> distribution;
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std::generate(process->random_entropy.begin(), process->random_entropy.end(),
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[&] { return distribution(rng); });
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kernel.AppendNewProcess(process);
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return process;
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}
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@ -8,6 +8,7 @@
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#include <bitset>
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#include <cstddef>
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#include <memory>
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#include <random>
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#include <string>
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#include <vector>
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#include <boost/container/static_vector.hpp>
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@ -119,6 +120,8 @@ struct CodeSet final {
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class Process final : public Object {
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public:
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static constexpr std::size_t RANDOM_ENTROPY_SIZE = 4;
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static SharedPtr<Process> Create(KernelCore& kernel, std::string&& name);
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std::string GetTypeName() const override {
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@ -212,6 +215,11 @@ public:
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total_process_running_time_ticks += ticks;
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}
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/// Gets 8 bytes of random data for svcGetInfo RandomEntropy
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u64 GetRandomEntropy(std::size_t index) const {
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return random_entropy.at(index);
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}
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/**
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* Loads process-specifics configuration info with metadata provided
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* by an executable.
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@ -310,6 +318,9 @@ private:
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/// Per-process handle table for storing created object handles in.
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HandleTable handle_table;
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/// Random values for svcGetInfo RandomEntropy
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std::array<u64, RANDOM_ENTROPY_SIZE> random_entropy;
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std::string name;
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};
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@ -559,7 +559,16 @@ static ResultCode GetInfo(u64* result, u64 info_id, u64 handle, u64 info_sub_id)
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*result = 0;
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break;
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case GetInfoType::RandomEntropy:
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*result = Settings::values.rng_seed.value_or(0);
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if (handle != 0) {
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return ERR_INVALID_HANDLE;
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}
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if (info_sub_id >= Process::RANDOM_ENTROPY_SIZE) {
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return ERR_INVALID_COMBINATION_KERNEL;
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}
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*result = current_process->GetRandomEntropy(info_sub_id);
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return RESULT_SUCCESS;
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break;
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case GetInfoType::ASLRRegionBaseAddr:
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*result = vm_manager.GetASLRRegionBaseAddress();
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@ -115,7 +115,7 @@ struct Values {
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// System
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bool use_docked_mode;
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bool enable_nfc;
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std::optional<u64> rng_seed;
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std::optional<u32> rng_seed;
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s32 current_user;
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s32 language_index;
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@ -140,7 +140,7 @@ ConfigureSystem::ConfigureSystem(QWidget* parent)
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connect(ui->rng_seed_checkbox, &QCheckBox::stateChanged, this, [this](bool checked) {
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ui->rng_seed_edit->setEnabled(checked);
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if (!checked)
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ui->rng_seed_edit->setText(QStringLiteral("0000000000000000"));
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ui->rng_seed_edit->setText(QStringLiteral("00000000"));
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});
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scene = new QGraphicsScene;
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@ -165,9 +165,8 @@ void ConfigureSystem::setConfiguration() {
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ui->rng_seed_checkbox->setChecked(Settings::values.rng_seed.has_value());
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ui->rng_seed_edit->setEnabled(Settings::values.rng_seed.has_value());
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const auto rng_seed = QString("%1")
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.arg(Settings::values.rng_seed.value_or(0), 16, 16, QLatin1Char{'0'})
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.toUpper();
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const auto rng_seed =
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QString("%1").arg(Settings::values.rng_seed.value_or(0), 8, 16, QLatin1Char{'0'}).toUpper();
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ui->rng_seed_edit->setText(rng_seed);
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}
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@ -269,10 +269,10 @@
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</font>
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</property>
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<property name="inputMask">
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<string>HHHHHHHHHHHHHHHH</string>
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<string>HHHHHHHH</string>
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</property>
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<property name="maxLength">
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<number>16</number>
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<number>8</number>
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</property>
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</widget>
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</item>
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