title: Hash small strings into numbers only
body: <p>My primary key 'is' a string - therefore I want to hash it so I can use the hashed number instead of a string..</p>
  
  <p>I have in total 800 fixed strings (meaning very few and really really low security risk on hashing) so its very unlikely I'll encounter collisions with a simple hash function/method. I considered md5 but since its going to be the primary key in my sqlite table I want to avoid any strings in it. Do you have anything in mind?</p>
  
  <p>Cheers</p>