Authenticity of digital images

Abstract

Copyrights are a big issue these days, it is extremely easy to loose our intellectual property (in sense of digital images) and thus money, moreover it is hard to proof our rights in the court. Our digital pictures must be protected in such a manner that it should be easy to proof we are the legitimate owner of the image and it should be computationally hard to forge such proof. We present a sketch of a new solution for copyright protection of digital images using chameleon hash functions, signatures and steganography. It is an extension of previous work in this field. We introduce a probabilistic similarity method into our scheme, which convince the verifier at certain level about the owner of the picture.