title: Compress and encrypt in Delphi
body: <p>I need a fast and strong compression + encryption method for my <code>DAT</code> file.</p>
  
  <p>I've a <code>DAT</code> file which contains very sensitive information and I would like to compress and encrypt it. I know I can use Zlib in compression method but how about the encryption method too ?</p>
  
  <p>many thanks </p>