title: Passport Strategy to authenticate application users from local db
body: <p>As per composer documentation I am able to validate my application users using github and after that redirecting to my blockchain application.</p>
  
  <p>But I have to use my local db where application users will be stored and have to validate application users against stored identities in my local db.</p>
  
  <p>Which passport strategy should I use and please let me know steps for it.</p>
  
  <p>Thanks in advance</p>