Since there is no reasonable way to prevent this kind of attack on DRM, it seems it would be more beneficial to be able to detect if the attack had been performed and pursue the individual in question.

The bottom line is that for human senses to perceive the media in question, it has to be in an analog format with no protection at some point in the playback. In addition to stripping the DRM from songs, it allows users, through a Facebook application, to share songs with their friends.Ĭircumventing FairPlay in this manner arose due to the “Analog hole” that exists for most media in existence today. DoubleTwist is designed to defeat Apple’s FairPlay DRM by playing the track’s in fast forward and capturing the analog signal as it leaves the sound card. As of January 15, 2008, the author has not updated QTFairUse for the latest version of iTunes, and the current revision is not compatible with that version.Īs of February 20, 2008, the QTFairUse project was given a cease and desist letter by Apple, Inc.Īll files were subsequently removed from the main download site.Jon Johansen (known for his work in defeating CSS in DVDs) has recently released an application known as DoubleTwist. The config file needs to be updated with each new iTunes release so far the author has released updates the same day as the new iTunes release. This config file is also compatible with iTunes 7.5.0.20. An iTunes 7.4.2.4 compatible configuration file was released on September 18, 2007. An iTunes 7.3.1 compatible configuration file was released on June 12, the same day Apple released the new iTunes update. An updated config file compatible with iTunes 7.1.2 was released on May 14, 2007. The current release (as of December 13, 2007) of QTFairUse6, version 6-2.5, supports iTunes 6.0.2 through 7.0.2. During this process, it copies unencrypted data, frame-by-frame, into RAM and then inserts it into a new MP4 container that is free of any DRM. To accomplish this task it uses a rather uncommon approach: instead of removing the already present DRM, it waits for iTunes to play back the protected file and intercepts the unencrypted AAC data stream as it is sent to the sound card. Functionally, the purpose of QTFairUse is to convert protected audio files (.m4p extension) purchased from Apple's iTunes Store into M4a files, without DRM.

Hymn qtfairuse