rng-tools includes a command for testing random number generator output.  I tried this with a FreeBSD port from <a href="https:&#x2F;&#x2F;github.com&#x2F;waitman&#x2F;rngtest" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;waitman&#x2F;rngtest</a><p>Results aren&#x27;t great:<p><pre><code>    rngtest: bits received from input: 300032
    rngtest: FIPS 140-2 successes: 0
    rngtest: FIPS 140-2 failures: 15
    rngtest: FIPS 140-2(2001-10-10) Monobit: 15
    rngtest: FIPS 140-2(2001-10-10) Poker: 15
    rngtest: FIPS 140-2(2001-10-10) Runs: 15
    rngtest: FIPS 140-2(2001-10-10) Long run: 0
    rngtest: FIPS 140-2(2001-10-10) Continuous run: 0
    rngtest: input channel speed: (min=236.690; avg=245.396; max=251.742)bits&#x2F;s</code></pre>