impengo's Journal: Hollywood and PGP: How a public key scheme could be used

I wrote here about a way to use public key encryption to make the web a better place for school text books. I have also contemplated that if pay services encrypted and there was an encrypted portion on every hard disk drive, this would make fee based distribution of content logically possible. I also noted that this makes a nightmare for distributors of bootleg content. What I have just understood is that legit suppliers of content would be mass distributing the same copy over and over. This presents a unique problem of its own: The rule in cryptography is to never encrypt the same data using the same cipher twice, or the bad guy will use the similarities to sieve out the data, and break the encryption that way. The solution to mass distribution of the duplicate content lies with steganography. Instead of rendering the contents unplayable with a watermark, each copy of a legitimate content file (a movie,) would need to be randomly seeded so that the encrypted copies would each be subtly different before encryption, but would still play in a movie player. The seed would be intertwined with the data using a process called steganography, which would defeat the problem of multiple copies of the same data going out with the same cipher; each would be subtly different. This random seeding might serve the duplicate purpose of a fingerprint, IF the provider chose to keep a record of the randomly generated seeds. I don't know if that's all a good thing, but there is where my logic takes me thus far.