title: Encrypt & Decrypt passwords using C#
body: <p>I want to create an application that can encrypt and decrypt my passwords using C#.</p>
  
  <p>My idea is simple. I will use <code>Substring</code> to extract each letter from the entered string and I will manipulate the ASCI code and convert it to another letter. I will use the same method to encrypt them.</p>
  
  <p>How difficult is it for someone to decrypt my generated password?</p>
  
  <p>I'm looking for either suggestions or example code.</p>