I am planning to do a project on data hiding using codeword substitution in encrypted video.
So as an enhancement I am planning to use this data hiding technique for tampering detection, for which I'll be extracting some information from the frames and will be hiding it in a selected frame.
I am actually using the concept of digital signature. The thing is that I am in search of a data to hide. A data which has to be extracted from the frames for verification on the receiver side.