the ec parameters are specified by an OID, or <b>explicit</b> where the ec parameters are explicitly given (see RFC 3279 for the definition of the EC parameters structures). The default value is <b>named_curve</b>. <b>Note</b> the <b>implicitlyCA</b> alternative, as specified in RFC 3279, is currently not implemented in OpenSSL.</p>

</dd>
</dl>

<h1 id="EXAMPLES">EXAMPLES</h1>

<p>To remove the pass phrase on a private key:</p>

<pre><code> openssl pkey -in key.pem -out keyout.pem</code></pre>

<p>To encry