db6ff4da60
The random number generator from ESP32 uses noise from Wi-Fi and Bluetooth radios. If these are off, a pseudo-random number is generated instead; this is currently the case, but even though it's a black box, it's arguably better than returning a timestamp as a pseudo-random number generator. According to the ESP32 Technical Reference manual, the RNG passed the Dieharder Random Number Test suite (version 3.31.1)[1], but nothing has been said about the quality of the PRNG. The RNG register is read directly; no effort is made to use its contents to feed an entropy pool in a way that's similar to /dev/random on POSIX systems, as no such subsystem exists on Zephyr at the moment. [1] http://webhome.phy.duke.edu/~rgb/General/dieharder.php Signed-off-by: Leandro Pereira <leandro.pereira@intel.com> |
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| .. | ||
| Kconfig | ||
| Kconfig.esp32 | ||
| Kconfig.mcux | ||
| Kconfig.stm32 | ||
| Makefile | ||
| rand32_timer.c | ||
| rand32_timestamp.c | ||
| random_esp32.c | ||
| random_mcux_rnga.c | ||
| random_mcux_trng.c | ||
| random_stm32_rng.c | ||