title: Hash Function .NET
body: <p>I should write an app that takes string input and computes the hash value for the string (the maximun characters of the input is 16), the output should be in length of 22 characters (or less but not more) on base64 format.</p>
  
  <p>I see that .NET framework suggests many hash functions, and I have no idea what to use,
  can anyone please recommend me what is the best function to use, and how can I limit the output to 22 characters? </p>
  
  <p>Thanks </p>