title: Benefits of running sha512 hash function several times
body: <p>I have seen this piece of code in a publication. What benefits does it bring to generate the hash 11 times? Is it more secure than one because of entropy?</p>
  
  <pre><code>var hash = sha512(salt+":"+user+":"+passwd);
  for(i = 0; i &lt; 10; i++)
      hash = sha512(salt+":"+user+":"+passwd);
  </code></pre>