Not if it's copyrighted, it isn't.
The Constitution empowers Congress to make laws regarding copyrights. Congress has done so. It's illegal for you to decrypt encoded copyrighted material even if it *does* pass through your "domain".
Deal with it, and drop the "it's mine, waaaaaa!" amateur lawyering.
A bunch of Henry David Thoreau's they ain't.
If it's copyrighted, I may not sell it, or charge admission to view it; as that is theft. However, the activity of looking at encrypted material is not wrong. Illictly selling the encrypted material is. For example, listening to a MP3 file is not a crime. Selling them is (unless you are the artist or copyright holder).