Section: Application Domains

Copyright Protection

Similarly to the privacy concern, the digital world makes easy the large-scale diffusion of information. But in some cases, this can be used in violation of some copyrights. Cryptography should help at solving this problem, which is actually two-fold: one can either mark the original document in order to be able to follow the distribution (and possibly trace the traitor who illegally made it public) or one can publish information in an encrypted way, so that authorized people only can access it.