A Register.co.uk article reports that the author of DeCSS has written a small command line Windows utility (QTFairUse) which "will dump the output of a QuickTime stream to a file". The Quicktime stream in question are AAC files and The Register article implies that it is able to circumvent Apple's DRM.
According to the QTFairUse README:
Usage:
Open and play a MPEG4 AAC file in QuickTime Player. The raw AAC data will be written to Desktop/QTFairUse.aac
The application clearly piggybacks off of Apple's Quicktime player and patches the "quicktimempeg4.qtx" file of Windows' Quicktime. It then outputs this "raw AAC data" to a file while the original AAC file plays under Quicktime. The proposed theory is that the application intercepts the Decrypted AAC files from Quicktime after authorization has taken place, and saves out the resultant decrypted (de-DRM'd) AAC data. (Note: the user of this software must be authorized to play the protected song).
Based on limited testing from one user with Quicktime 6.4 under Windows... the application does create ".aac" files when Protected AAC and Unprotected AAC files are played through Quicktime. These output files, however, are unplayable in their raw form. The reason for this is that these files represents the true "raw" AAC data that is passed through to Quicktime to play. All header information has been removed. To create playable files, a further packaging of the files is required to add the appropriate MPEG headers. As a result, testing of the files is limited, but we suspect the application likely does work as suggested -- stripping DRM from your protected AAC files (though is of limited use in its current form).
In any case, this is the first public attempt at breaking Apple's Digital Rights Management format. The potential for abuse and concern for an application such as this is greater than simple "stream rippers" in that this would introduce lossless ("perfect") copies of protected files
According to the QTFairUse README:
Usage:
Open and play a MPEG4 AAC file in QuickTime Player. The raw AAC data will be written to Desktop/QTFairUse.aac
The application clearly piggybacks off of Apple's Quicktime player and patches the "quicktimempeg4.qtx" file of Windows' Quicktime. It then outputs this "raw AAC data" to a file while the original AAC file plays under Quicktime. The proposed theory is that the application intercepts the Decrypted AAC files from Quicktime after authorization has taken place, and saves out the resultant decrypted (de-DRM'd) AAC data. (Note: the user of this software must be authorized to play the protected song).
Based on limited testing from one user with Quicktime 6.4 under Windows... the application does create ".aac" files when Protected AAC and Unprotected AAC files are played through Quicktime. These output files, however, are unplayable in their raw form. The reason for this is that these files represents the true "raw" AAC data that is passed through to Quicktime to play. All header information has been removed. To create playable files, a further packaging of the files is required to add the appropriate MPEG headers. As a result, testing of the files is limited, but we suspect the application likely does work as suggested -- stripping DRM from your protected AAC files (though is of limited use in its current form).
In any case, this is the first public attempt at breaking Apple's Digital Rights Management format. The potential for abuse and concern for an application such as this is greater than simple "stream rippers" in that this would introduce lossless ("perfect") copies of protected files