ementation of an algorithm can vary. The options for the OpenSSL implementations are detailed below. There are no key generation options defined for the X25519, X448, ED25519 or ED448 algorithms.</p>

<h2 id="RSA-Key-Generation-Options">RSA Key Generation Options</h2>

<dl>

<dt id="rsa_keygen_bits:numbits"><b>rsa_keygen_bits:numbits</b></dt>
<dd>

<p>The number of bits in the generated key. If not specified 2048 is used.</p>

</dd>
<dt id="rsa_keygen_primes:numprimes"><b>rsa_keygen_primes:numprimes</b></dt