Background[ edit ] Hexadecimal is a base numeral system used in the fields of computer programming and mathematics. The key is an ordinary number most widely known by its hexadecimal representation; in decimal notation, it is 13,,,,,,,,,,,, There are several interlocking encryption mechanisms, such that cracking one part of the system does not necessarily crack other parts.
Therefore, the "09 F9" key is only one of many parts that are needed to play a disc on an unlicensed player. If other players are then cracked, further revocation would lead to legitimate users of compromised players being forced to upgrade or replace their player software or firmware in order to view new discs. Each playback device comes with a binary tree of secret device and processing keys. The processing key in this tree, a requirement to play the AACS encrypted discs, is selected based on the device key and the information on the disc to be played.
As such, a processing key such as the "09 F9" key is not revoked, but newly produced discs cause the playback devices to select a different valid processing key to decrypt the discs.
On or about January 13, a title key was posted on pastebin. By converting these results to hexadecimal, a correct key could be formed. I only had to watch the "show" in my own memory. No debugger was used, no binaries changed. This key is not specific to any playback device or DVD title. Sims of Proskauer Rose. The Digg community reacted by creating a flood of posts containing the key, many using creative ways of disguising the key,  by semi-directly or indirectly inserting the number, such as in song or images either representing the digits pictorially or directly representing bytes from the key as colors or on merchandise.
But now, after seeing hundreds of stories and reading thousands of comments, you've made it clear. You'd rather see Digg go down fighting than bow down to a bigger company. We hear you, and effective immediately we won't delete stories or comments containing the code and will deal with whatever the consequences might be. If you try to stick up for what you have a legal right to do, and you're somewhat worse off because of it, that's an interesting concept. Impact[ edit ] In a response to the events occurring on Digg and the call to "Spread this number", the key was rapidly posted to thousands of pages, blogs and wikis across the Internet.
Sorocco noted, "People are getting creative. It shows the futility of trying to stop this. Once the information is out there, cease-and-desist letters are going to infuriate this community more.
Media coverage initially avoided quoting the key itself. However, several US-based news sources have run stories containing the key, quoting its use on Digg,       though none are known to have received DMCA notices as a result.
Later reports have discussed this, quoting the key. The statement continued, "AACS LA is encouraged by the cooperation it has received thus far from the numerous web sites that have chosen to address their legal obligations in a responsible manner.