title: AES do I need to split my decoded message to chunks
body: <p>I have a picture and I want to encrypt it using AES, do I need to split it to chunks? (because if I get a key with the size of 256 bits and my message is bigger, if I xor them, most of the message will remain the decoded message, so how will that help?)</p>
  
  <p>if yes, how do I go about doing that?</p>