n random bytes is to call RAND_bytes(...) or RAND_priv_bytes(...). These calls are roughly equivalent to calling EVP_RAND_generate(&lt;public&gt;, ...) and EVP_RAND_generate(&lt;private&gt;, ...), respectively.</p>

<h1 id="RESEEDING">RESEEDING</h1>

<p>A DRBG instance seeds itself automatically, pulling random input from its entropy source. The entropy source can be either a trusted operating system entropy source, or another DRBG with access to such a source.</p>

<p>Automatic reseeding occurs after a pre