title: c++ program for encryption and decryption
body: <p>When I tried using this code template and encrypt a block consisting of some null characters , its execution got aborted. When I used debugger and saw the cause of failure, I got to know that when null characters get appended, the execution aborts.</p>
  
  <p>Can anyone suggest me solutions in c++ to decrypt successfully even when I encounter a null charater which is significant and has to be decrypted.?</p>