> bytes which is used to derive the keying data. <b>count</b> is the iteration count to use. The derived key and IV will be written to <b>key</b> and <b>iv</b> respectively.</p>

<h1 id="NOTES">NOTES</h1>

<p>A typical application of this function is to derive keying material for an encryption algorithm from a password in the <b>data</b> parameter.</p>

<p>Increasing the <b>count</b> parameter slows down the algorithm which makes it harder for an attacker to perform a brute force attack using a large number