title: How to check password manually in Asp.Net identity 2?
body: <p>This might actually be more of a conceptual question. In Asp.Net Identity the PasswordHasher generates a different hash for the same string every time you do:</p>
  
  <pre><code>new PasswordHasher.HashPassword("myString");
  </code></pre>
  
  <p>Now if for some reason I need to manually compare a user's input to the password saved in the database, I will most probably get a different string when I hash the user's entered password, than the one that is stored in the database. </p>
  
  <p>Can someone please explain this to me? Shouldn't hashing the same string result in the same hash and if not, how does Identity itself realize that two different hashes are in fact the same?</p>