title: String obfuscation using C++ standard ibrary
body: <p>I want to obfuscate some string data stored locally on iOS/Android device. Something similar to a high score in a game. My goal is to thwart only the laziest people, so encrypting the data really isn't necessary. <strong>What does the C++ Standard Library provide that can help?</strong></p>
  
  <p>I looked briefly at <a href="http://www.cryptopp.com/" rel="nofollow">cryptopp.com</a> and <a href="https://github.com/libtom/libtomcrypt" rel="nofollow">libtomcrypt</a> but I think they're overkill for what I want to achieve.</p>