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Reduce key duplication by enabling hardware RNG (#8803)

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* Reduce key duplication by enabling hardware RNG

* Apply suggestion from @Copilot

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* Apply suggestion from @Copilot

Use micros() for worst case random seed for nrf52

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* Minor cleanup, remove dead code and clarify comment

* trunk

* Add useRadioEntropy bool, default false.

---------

Co-authored-by: Ben Meadors <benmmeadors@gmail.com>
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
Co-authored-by: Jonathan Bennett <jbennett@incomsystems.biz>
This commit is contained in:
Darafei Praliaskouski
2026-04-13 21:05:23 +04:00
committed by GitHub
parent 16dcafa7fb
commit 77f378dd53
8 changed files with 245 additions and 16 deletions
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9
src/platform/portduino/PortduinoGlue.cpp
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@@ -1,4 +1,5 @@
#include "CryptoEngine.h"
#include "HardwareRNG.h"
#include "PortduinoGPIO.h"
#include "SPIChip.h"
#include "mesh/RF95Interface.h"
@@ -233,7 +234,9 @@ void portduinoSetup()
std::cout << "Running in simulated mode." << std::endl;
portduino_config.MaxNodes = 200; // Default to 200 nodes
// Set the random seed equal to TCPPort to have a different seed per instance
randomSeed(TCPPort);
uint32_t seed = TCPPort;
HardwareRNG::seed(seed);
randomSeed(seed);
return;
}
@@ -512,7 +515,9 @@ void portduinoSetup()
#endif
printf("MAC ADDRESS: %02X:%02X:%02X:%02X:%02X:%02X\n", dmac[0], dmac[1], dmac[2], dmac[3], dmac[4], dmac[5]);
// Rather important to set this, if not running simulated.
randomSeed(time(NULL));
uint32_t seed = static_cast<uint32_t>(time(NULL));
HardwareRNG::seed(seed);
randomSeed(seed);
std::string defaultGpioChipName = gpioChipName + std::to_string(portduino_config.lora_default_gpiochip);