title: Is it possible to base64 decode part of a base64 encoded message
body: <p>I am working on a project where I am getting parts of base64 encoded data, but not the whole thing.  Is it possible to figure out what that part of the base64 encoded data was?</p>
  
  <p>For example.  Say I base64 encode <code>hello world</code></p>
  
  <p>It becomes <code>aGVsbG8gd29ybGQ=</code></p>
  
  <p>But say I am only able to capture <code>sbG8gd29y</code></p>
  
  <p>Which base4 decodes to <code>ݽ</code></p>
  
  <p>I am familiar with how base64 encoding process works and I cannot think of a way to figure out what part of a base64 encoded message is without adding data randomly to the chunk on the front and back and comparing with dictionary words, but the problem is I am not even 100% sure that the data I am working with includes dictionary words.</p>
  
  <p>Thanks</p>