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We have HardwareRNG, let's use it! (#10274)

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This commit is contained in:
Jonathan Bennett
2026-04-23 13:16:49 -05:00
committed by GitHub
parent 48747ee43d
commit 031f332ec1
1 changed files with 8 additions and 3 deletions
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11
src/platform/nrf52/NRF52Bluetooth.cpp
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@@ -1,6 +1,7 @@
#include "NRF52Bluetooth.h"
#include "BLEDfuSecure.h"
#include "BluetoothCommon.h"
#include "HardwareRNG.h"
#include "PowerFSM.h"
#include "configuration.h"
#include "main.h"
@@ -272,9 +273,13 @@ void NRF52Bluetooth::setup()
Bluefruit.setTxPower(NRF52_BLE_TX_POWER);
#endif
if (config.bluetooth.mode != meshtastic_Config_BluetoothConfig_PairingMode_NO_PIN) {
configuredPasskey = config.bluetooth.mode == meshtastic_Config_BluetoothConfig_PairingMode_FIXED_PIN
? config.bluetooth.fixed_pin
: random(100000, 999999);
if (config.bluetooth.mode == meshtastic_Config_BluetoothConfig_PairingMode_FIXED_PIN) {
configuredPasskey = config.bluetooth.fixed_pin;
} else {
uint32_t hwrand = 0;
HardwareRNG::fill(reinterpret_cast<uint8_t *>(&hwrand), sizeof(hwrand));
configuredPasskey = hwrand % 900000u + 100000u;
}
auto pinString = std::to_string(configuredPasskey);
LOG_INFO("Bluetooth pin set to '%i'", configuredPasskey);
Bluefruit.Security.setPIN(pinString.c_str());