etdocs.org/os/cpu-count">Community Examples</a></div><hr><div class="binding"><span id="os/cryptorand" class="binding-sym">os/cryptorand</span> <span class="binding-type">cfunction</span> <span class="binding-type"><a href="https://github.com/janet-lang/janet/blob/4e5889e/src/core/os.c#L1572">source</a></span> <pre class="binding-text">(os/cryptorand n &amp;opt buf)

Get or append `n` bytes of good quality random data provided by the OS. Returns a new buffer or `buf`.</pre><a href="https://janetdocs.org/os/