title: MD5 code generation
body: <p>I have a query regarding MD5 code generation. My page has 4 fields, like user name, password.</p>
  
  <p>I need MD5 code generation for password fields. My MD5 code conversion code is perfect, there is no error, but when I run the application, it crashes.</p>
  
  <p>I exactly don't know how to convert my password field with my conversion code. I need help as I am new to iPhone development. Code would be appreciated.</p>