title: Is it possible to break a 128-bit key?
body: <p>I'm a programmer and relatively new to cryptography, so pardon my rookie question. :)</p>
  
  <p>Let's say we have a message, both in plain text and encrypted with a 128-bit key.
  In theory, it possible to somehow find out the key? And, if yes, what computing time are we talking about? </p>
  
  <p>Thanks!</p>