title: Extracting binary data with Exiftool
body: <p>I am doing a steganography challenge. I have a jpeg file, and when I look the metadata of it with Exiftool, I see something interesting.</p>
  <pre><code>Red Tone Reproduction Curve     : (Binary data 64 bytes, use -b option to extract)
  Green Tone Reproduction Curve   : (Binary data 64 bytes, use -b option to extract)
  Blue Tone Reproduction Curve    : (Binary data 64 bytes, use -b option to extract)
  </code></pre>
  <p>So I thought that maybe there is something interesting there, but I am not sure on how to extract that binary data. When I use the following command: <code>exiftool -b -RedTRC nameOfThePicture.jpeg</code>, then I get this message: <code>curv          ck?Q!)2;FQw]kpz|i}0</code>.
  I think that message can be something but I don't how to extract that binary data and which type of file could it be. Any help?</p>