okr@gmail.com</a>&gt;</code>
  </p><p>
   <code class="filename">pgcrypto</code> uses code from the following sources:
  </p><div class="informaltable"><table class="informaltable" border="1"><colgroup><col /><col /><col /></colgroup><thead><tr><th>Algorithm</th><th>Author</th><th>Source origin</th></tr></thead><tbody><tr><td>DES crypt</td><td>David Burren and others</td><td>FreeBSD libcrypt</td></tr><tr><td>MD5 crypt</td><td>Poul-Henning Kamp</td><td>FreeBSD libcrypt</td></tr><tr><td>Blowfish crypt</td><td