title: How to change input values using Auth Component?
body: <p>I am using the last version of CakePhp.</p>
  
  <p>I developed a simple web form with email and password(i am using email instead of username).</p>
  
  <p>Now i have the follow problem.</p>
  
  <p>I have encrypted email field in the database, so, for this reason, i can not use auth Component as is because it will check plan email and hashed password. I need encrypted email and hashed Password.</p>
  
  <p>So Now,  before login() how can i change the value of the email field?</p>
  
  <p>Thank you</p>