There’s a bit of a fuss on t’internet at the moment about a 128-bit number that is the key to decrypting hi-def DVDs. The DVD manufacturers aren’t happy to see this going around, and are issuing legal documents to anyone they can find to prevent its dissemination. They’re allowed to do that (probably) because the number is considered a copy protection circumvention device, which makes it illegal to own under the Digital Millennium Copyright Act.
Still with me? Well thanks to Ed Felten, you too can be the proud owner of a 128-bit number. If enough people collect their own number (and we’re talking more people than have ever existed by several orders of magnitude) then there will be no numbers left for stupid encryption schemes like this. Even a decent subset would cause them a headache, as due diligence would call for a full search of all existing numbers.
And before you get any ideas, AC 0F 65 D1 24 AF 00 D3 95 81 E8 45 88 6C 93 8A is already taken.