[riot-notifications] [RIOT-OS/RIOT] cpu/nrf5x_common: enable bias correction in hwrng (#14002)

Semjon Kerner notifications at github.com
Mon May 4 14:57:59 CEST 2020


I've written a tiny tool to visualize the randomness, cause I've read that this is a valid method of analyzing them.
This is what the dumps look like. Each rectangle is one dump and consists of 100 columns (the random numbers of this dump) and 32 rows (bits true in number).
The top row of rectangles are the dumps from master (nrf51dk  nrf52832mdk  nrf52840dk  nrf52840mdk  nrf52dk) and the bottom row are the dumps from your PR.

![bitmap](https://user-images.githubusercontent.com/1882648/80967452-b24c7000-8e16-11ea-8d3a-49f1e3218b80.png)

I think this looks random enough in both cases.

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