title: What type of hash (or encryption) is this?
body: <p>I am reverse engineering an unfortunate legacy application. I know the following:</p>
  
  <p><code>username</code> => hashFunction() => <code>8BYUW6iFeL9mmSBW7xjzMw~~</code></p>
  
  <p><code>password</code> => hashFunction() => <code>VszQfe5n0+CooePc7CS9kw~~</code></p>
  
  <p>The hashes always seem to be 22 characters in length. The system is a legacy microsoft .net application. I have reason to believe that they are reverseable as well (but this may not be true). </p>
  
  <p>The two trailing tildes make me feel like I should be able to identify this. How do I begin to figure out what type of hashing is used?</p>