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Update README.md

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Added figures.
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Pol Henarejos
2022-08-22 13:14:35 +02:00
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@@ -81,8 +81,12 @@ $ python3 firmware/pico_rng_analyze.py sample.rng
```
will produce two figures:
![fig1](https://user-images.githubusercontent.com/55573252/185908242-9fac9e7c-bfd2-440b-bd1d-045b571ed010.png)
Fig. 1 depicts the distribution of the bytes, from `0` to `255`. Ideally, it must be a uniform distribution, with mean equal to `127.5`.
![fig2](https://user-images.githubusercontent.com/55573252/185908272-42973878-7c4f-45ec-8492-6878f8a0bfa6.png)
Fig. 2 depicts the distribution of chi square tests and excess percentages. Ideally, the distribution of chi square tests must follow a chi square distribution with mean at `255`. Excess percentage distribution must follow a uniform distribution.
Pico-rng is also tested with `ent`, `rngtest` and `dieharder` tests. These are the results obtained with pico-rng: